The shower went from steady to sputter, then to silence. No pressure, no water—just that helpless stare at a pressure gauge pinned at zero. For a lot of rural homeowners, a dead system means hauling five-gallon buckets, calling neighbors, and crossing fingers for a same-day fix. In more of these emergencies than you’d think, the root cause isn’t a burnt motor or broken impeller—it’s a tired, leaking check valve that quietly erased system pressure and left the pump short-cycling itself to death.

Meet the Najjar family. Omar Najjar (39), a paramedic, and his wife Liana (37), a high school science teacher, live on 6 wooded acres outside Chehalis, Washington, with their kids, Maisie (9) and Leo (6). Their 265-foot private well ran a budget 1 HP pump for years—until a noisy “thunk” on shutoff grew into midnight pipe rattles and morning pressure loss. Their old Red Lion rig used a flimsy external spring check that was swallowing air and backflow. The short cycling stressed their pressure tank, the pressure switch burnt contacts twice, and the impellers started to grind. When the water finally stopped during laundry day, their plumber found a failed check valve and a scalded motor. They needed a real solution.

This list isn’t pump trivia. These seven truths explain exactly how a check valve protects your pump, stabilizes your pressure tank, prevents water hammer, and extends the life of a Myers Predator Plus submersible. We’ll detail ideal valve placement, install technique, system tuning, and how Myers engineering (stainless construction, Pentek XE motors, and field serviceable design) turns a small part into big-time reliability. If you’re a rural homeowner, a contractor, or an emergency buyer, this guide will save you service calls and downtime.

Awards and credibility matter in the water game. Myers Pumps deliver 80%+ efficiency near BEP, are backed by Pentair R&D, Made in USA, UL listed, and covered by an industry-leading 3-year warranty. At Plumbing Supply And More (PSAM), I hand-pick Myers systems because I’ve watched them run clean and steady for a decade or more—when installed with the right check-valve strategy.

As PSAM’s technical advisor, I’m Rick Callahan. Decades in the field taught me a simple truth: pumps don’t die from hard work; they die from bad systems. Let’s make yours bulletproof.

#1. Static Seal, Dynamic Shield – Why a Check Valve Protects Your Myers Submersible from Reverse Spin and Short Cycling

When your submersible well pump stops, water wants to fall back down the column. A quality internal check valve prevents reverse flow, https://www.plumbingsupplyandmore.com/plumbing-hvac-brand-categories/myers-pumps.html blocking backspin forces that chew up thrust bearings and trigger rapid cycling at the pressure switch.

Inside a submersible system, a check valve acts like a one-way gate. The best configurations rely on a primary non-return valve at the pump discharge and, in taller wells or long runs, staged checks above the pitless. In a Myers Predator Plus, the internal valve pairs beautifully with tight impeller-to-diffuser tolerances and an efficient thrust stack. That synergy reduces water hammer, stabilizes pressure tank drawdown, and preserves prime on restart. Without a strong seal, the pressure bleeds back, the switch snaps on and off, and the motor endures hard-start punishment—death by a thousand micro-cycles. Good check valves make good pumps live longer.

For the Najjars, the failed external spring check allowed column drainback. Every shower ended with tank bleed-down, a rapid on/off cycle, and a 2 a.m. Hammer plumbingsupplyandmore.com bang. Upgrading to a Myers Predator Plus with a reliable internal check, plus a secondary topside check, stopped the nightly thuds and saved their pressure tank.

Primary Internal Valve at the Pump Discharge

The factory internal check valve on Myers submersibles does the heaviest lifting. Mounted directly on the discharge, it locks system pressure at shutdown and prevents backspin that can reverse the motor momentarily. That momentary reversal is what shreds thrust bearings over time. With a tight-seating internal valve, your start sequence stays clean—no cavitation rush, no torque slap, no “hunting” for pressure. It’s insurance built right into the pump.

Secondary Check Above the Pitless

On deeper wells (over ~150 feet) or lines with long horizontal runs, add a second inline check above the pitless adapter. This staged seal shortens the static water column held above grade, reducing the load on the bottom valve and cutting water hammer potential. Place it vertically, arrow up, with full-port design to minimize head loss. Avoid stacking too many—they can trap air.

Key takeaway: Don’t ask your motor to fight gravity every stop. Give it a reliable internal check and a smartly placed secondary valve, and it will thank you with years of steady starts.

#2. Pressure Tank Harmony – How Check Valves Stabilize Drawdown, Protect Switch Contacts, and Maintain TDH Integrity

A properly seated check valve lets your pressure tank do its job—store energy as compressed air and deliver clean drawdown between pump starts—while preserving the pump’s TDH (total dynamic head) performance.

Hydraulically, the check valve “pins” system pressure at the tank and house side. That anchor keeps the pressure switch honest: cut-in means cut-in, cut-out means cut-out. If water sneaks backward through a leaky valve, your switch chatters, contacts arc, and the pump never sees a long enough off-cycle to cool. On the head side, stable static conditions help the pump operate along its pump curve predictably, preventing low-flow stalls and premature staging wear.

When Omar and Liana saw their gauge dropping 10 PSI in minutes, the culprit was a check that wouldn’t hold. After the swap to a Myers Predator Plus and a high-quality inline valve above the pitless, their 44-gallon tank regained full drawdown—fewer starts, longer runs, cooler motor.

Drawdown Preservation and Cooling Time

Your pressure tank’s drawdown is not optional; it’s your motor’s cooling schedule. A secured check ensures every off-cycle is long enough for rotor and windings to shed heat. This is critical for pumps at higher amperage draw near the top of their pump curve, or in homes with frequent short demands (handwashing, ice makers).

Accurate Switching at the Pressure Switch

Arcing switch contacts are a symptom, not a root cause. Leaky checks force rapid cycling that pits and burns contacts. Lock in a solid non-return valve, confirm cut-in/cut-out (commonly 40/60 PSI), and your switch will last. Pro tip: always pair a new check with a fresh 1/4" tube and clean switch orifice. Debris equals false trips.

Key takeaway: Reliable checks mean real drawdown, cool motors, quiet contacts—and years more life out of your pressure system.

#3. Placement That Pays – Internal Check Valve, Vertical Inline, and the Pitless Adapter Strategy for Myers Predator Plus Systems

Where you put check valves matters as much as which brand you buy. Myers’ Predator Plus Series includes an internal check valve, and smart installers add a single inline valve above the pitless to share the load and eliminate hammer.

The logic is simple: one at the pump, one at the top. That arrangement holds pressure at the house and shields the pump from reverse spin while avoiding air entrapment or water column segmentation. Keep the inline check vertical, as close to the pitless as practical, and spec full-port, low-crack-pressure designs. Overuse of checks—stacking three, four, or five—invites vibration, trapped air, and slow refill symptoms that mimic low flow.

For the Najjars’ 265-foot well, we set the Myers submersible at 200 feet with the internal valve, plus one 1-1/4" full-port brass check just inside the basement before the tank tee. Hammer vanished. Starts stretched out. Morning showers got boring again—in a good way.

Why One Inline Check Is Enough

Each added check introduces turbulence and failure points. Two total—internal and one inline—covers 99% of residential installs up to ~300 feet. That’s the sweet spot for drawing down without overcomplicating the riser. Fewer parts, fewer leaks, fewer callbacks.

Crack Pressure and Full-Port Design

Choose a low crack-pressure check (¼ to ½ PSI) to minimize start-up headloss. Full-port flow paths keep velocities lower, protecting fittings and elbows just downstream of the pitless. This attention to detail often cures “mystery” hammer that isn’t a pressure issue at all, just a throttled flow path waking up violently at start.

Key takeaway: Place checks to help physics, not fight it. Internal at the pump, one inline near the pitless, and you’ll run quieter and longer.

#4. Materials and Mechanics – Why Stainless Pumps and Proper Checks Prevent Hammer, Air Entrapment, and Thrust Wear

You can’t talk valves without talking materials. Myers Pumps use 300 series stainless steel shells and components paired with Teflon-impregnated staging. Combined with a tight-sealing check strategy, that build shrugs off grit, acidic water, and repetitive thermal cycles.

Water hammer is the assassin of threaded joints and motor thrust stacks. A solid non-return valve reduces the sudden reversal that hammers diffusers and impellers. Meanwhile, stainless bodies resist the micro-pitting that turns small hammers into big leaks. And because Teflon-impregnated stages are self-lubricating, even minor entrained air from imperfect installs causes less friction damage while you correct the root cause.

Liana’s science brain appreciated this: stop the reverse column, smooth the shutdown, and let stainless do its work. Post-upgrade, their lines stopped rattling, and that anxious listen-for-the-pump every night faded away.

Stainless Steel Durability in Real Water

Iron-rich, slightly acidic, or sand-shedding wells punish cheaper materials. 300 series stainless steel does not rust away under those conditions. With the mechanical jolt of shutdown now damped by a stout check valve, your threads and bowls don’t loosen or pit prematurely.

Self-Lubricating Stages with Cleaner Starts

Even with the occasional gulp of microbubbles at start, Teflon-impregnated staging reduces wear at the impeller eye. Once your check and bleed strategy is dialed (see install tips below), starts become laminar and consistent—ideal for multi-stage longevity.

Key takeaway: Marry strong checks with stainless and self-lubricating internals. You’ll feel it immediately and see it in your service records years from now.

#5. Smarter Starts – Pentek XE Motor, 2-Wire Simplicity, and How Check Valves Shape Clean Electrical Profiles

Electrical starts and hydraulic starts are two sides of the same coin. The Pentek XE motor under the Myers Predator Plus hood loves clean starts—predictable head, no backspin, and steady voltage. A trustworthy check valve delivers exactly that profile.

Pairing a 1 HP Predator Plus in a 2-wire well pump configuration keeps components to a minimum. With one less external box, there’s less to miswire and fewer terminations to corrode. The check valve ensures the motor doesn’t see a sudden reverse load at stop or a starving inlet at start. That means lower locked-rotor stress, fewer nuisance trips, and longer insulation life. If your application benefits from a 3-wire well pump (serviceability, above-grade capacitor replacement), the check strategy remains identical—lock the column and let the motor do honest work.

Omar had a 2-wire setup. Once the check strategy was fixed and the Myers unit dropped, start amperage spikes flattened on my clamp meter. The pressure switch stopped chattering. That’s what a check valve does—you hear it as quiet, and you see it as years.

Why 2-Wire and a Good Check Make Sense

Simplicity scales. With fewer components and a stable hydraulic seal, a 2-wire Myers submersible becomes almost plug-and-play for straightforward residential wells. Less gear, less failure, easier troubleshooting.

Start-Up Amperage and Locked-Rotor Reality

Hard restarts happen when backspin or column drainback fights the motor. A sealed column equals steady inrush, quicker to run-speed, and less heat. If you’ve lost two control boxes in a year, look at your check before blaming the motor.

Key takeaway: Smooth hydraulics create smooth electrical behavior. The check valve is the quiet conductor.

#6. Installation That Endures – Thread Sealant, Vertical Orientation, and Bleed Strategy with Myers Field-Serviceable Design

Best-in-class pumps deserve best-in-class installs. Myers’ threaded assembly is truly field serviceable, but only if the system is sealed and oriented correctly—especially the check. Put it vertical, use the right sealant, and plan for air.

On any install or rebuild, I seat the inline check vertically with the flow arrow up, immediately inside from the pitless, then build the tank tee with a short, sweep-friendly path. Clean NPT threads, anaerobic thread sealant (not just tape), and torque to spec—not gorilla-tight—keep the valve body from warping. Bleed air at first start by cracking the faucet nearest the tank and watching for microfoam, then cycle to verify a dead-quiet shutdown. If you still hear pipe tick or bump, inspect elbows downstream for restriction.

The Najjars’ original install had the check on a 45-degree run. It chattered. Set vertical on the rebuild, it closed smoothly with every stop. Two weeks later, Liana said, “Our house finally sounds like a house again.”

Sealant and Torque the Right Way

Brass and stainless threads require finesse. Tape alone can cold-flow; I favor a thin wrap plus anaerobic sealant. Over-torquing distorts the internal poppet path. Keep it true, keep it vertical, and the disc will seat square every time.

Air Management on First Start

Air is the enemy of quiet stops. Bleed the system, then confirm your pressure switch cut-in/out doesn’t overshoot. If you get micro-hammer, reposition the valve to vertical and re-check for trapped air at high points.

Key takeaway: A few quiet minutes during install save you from loud, expensive years later.

#7. Real-World Reliability Math – Myers vs Competitors on Check Valves, Materials, and Lifetime Cost of Ownership

Let’s lay out the reality many contractors quietly acknowledge. Strong checks paired with robust submersibles separate 3-year nuisance systems from 10-year winners. Here’s where selected competitors stack up against Myers in the context of check-valve performance and system reliability.

First, material and motor differences: Myers uses 300 series stainless steel bodies with Teflon-impregnated staging, driven by the Pentek XE motor. That trio resists abrasive wear and tolerates the tiny hydraulic imperfections that bad checks amplify—reverse jolts, air ingestion, and pressure oscillations. Franklin Electric makes solid motors, no doubt, but proprietary control ecosystems and dealer-only service can slow down a simple check-valve correction. Goulds Pumps deploy cast iron in various components; in acidic or iron-heavy water, corrosion grows, pivoting minor hammer into leaks and seized fasteners over time.

On the application side, Myers includes a factory internal check valve and thrives on straightforward 2-wire or 3-wire layouts. Less gear to complicate pressure diagnostics. In my service logs, Predator Plus systems with sound check placement routinely hit 8–15 years. Goulds rigs in rough water environments showed more corrosion-driven call-backs around fittings and bowls. Franklin installs often required brand-specific boxes, adding cost and complexity to what should be a quick pressure-hold fix.

Value verdict: For rural families who can’t tolerate downtime, Myers’ stainless construction, internal check, and Pentair-backed efficiency make the upfront investment worth every single penny.

Comparison Focus: Myers vs Red Lion on Check-Hammer Longevity (Detailed)

Thermoplastic housings common to many Red Lion models don’t love repetitive hammer. Seat wear inside external spring checks can present early, causing column drainback and night-time banging. That pattern accelerates start cycles, heats motors, and batters fittings. By contrast, Myers’ stainless body resists shock micro-fractures, and a tight-seating internal valve arrests reverse flow right at the discharge. Over a decade, that’s fewer jolts, fewer leaks, and fewer Sundays under the house.

In the field, I’ve replaced three Red Lion setups in five years at one property—every time the check failed early, the lines hammered, and elbows dripped. Upgrading to a Predator Plus with a vertical inline brass check ended the parade of pinhole leaks. Fewer cycles also cut their electric bill. Add the industry-leading 3-year warranty, and the long-term cost gap was closed by year three.

Bottom line: When reverse-flow control and hammer resistance are the issues, Myers’ integrated approach saves time, fittings, and sanity—worth every single penny.

FAQ: Check Valves and Myers Well Pump Systems

How do I determine the correct horsepower for my well depth and household water demand?

Start with your well’s static water level, pumping water level, total lift to the pressure tank, and target pressure (e.g., 50 PSI ≈ 115 feet of head). Add friction loss from drop pipe and fittings. That total is your TDH (total dynamic head). Cross-reference that TDH with the pump’s pump curve to select a motor size and staging that delivers 7–12 GPM for typical homes. A 1/2 HP often supports shallow to moderate heads; 3/4 to 1 HP fits many 150–300 ft residential wells; 1.5–2 HP for higher demands or very deep sets. Pair the horsepower with a solid check-valve strategy so starts are clean and the pump operates near its Best Efficiency Point. In the field, I’ve found a Myers Predator Plus 1 HP to be a superb sweet spot for 200–300 ft wells at 8–12 GPM. Pro tip: confirm real water level data—guessing costs energy and lifespan.

What GPM flow rate does a typical household need and how do multi-stage impellers affect pressure?

Most single-family homes are comfortable at 8–12 GPM, with short peaks to 15 GPM if irrigation runs or multiple fixtures open. Multi-stage submersible impellers stack pressure by adding head per stage, not more flow per se. When your check valve holds pressure between cycles, the pump starts against predictable head, each stage lifts cleanly, and you get consistent pressure at the fixtures. If the check leaks, the pump can start “light” (less head) then surge, which batters stages and elbows. Myers’ Teflon-impregnated staging tolerates minor hydraulic turbulence better than hard, dry plastics. For families like the Najjars, a 10 GPM-rated, 1 HP Predator Plus keeps showers and laundry happy while holding 50–60 PSI reliably.

How does the Myers Predator Plus Series achieve 80% hydraulic efficiency compared to competitors?

Higher efficiency comes from tighter manufacturing tolerances, smooth diffuser channels, balanced impellers, and coordinated motor-pump matching. Myers Predator Plus leverages Pentek XE motor torque curves that align with pump stages so the system runs near BEP under typical head. The result is less slip, lower heat, and quieter operation. A reliable internal check valve ensures each start meets the pump with expected static head—essential for preventing the “thrash” that steals efficiency. Compared to mixes of cast components and looser checks I see elsewhere, the Predator Plus ecosystem minimizes energy waste and keeps kilowatt-hours down month after month. Over 10 years, that translates to tangible savings on top of longer hardware life.

Why is 300 series stainless steel superior to cast iron for submersible well pumps?

300 series stainless steel resists corrosion in mineral-rich, slightly acidic, or iron-laden water—exactly the environments that turn cast iron scaly and fragile. In submersibles, stainless maintains dimensional stability around wear rings and bowls, preserving the knife-edge tolerances that support efficiency. When shutdowns are clean (thanks to a solid check valve), stainless threads and housings don’t suffer from repeated hammer-induced micro-pitting. While cast iron can work in benign water, the penalty in harsher conditions is early rust, stubborn fasteners, and shortened life. This is why Myers anchors Predator Plus bodies in stainless: predictable performance for 8–15 years when paired with good valve placement and maintenance.

How do Teflon-impregnated self-lubricating impellers resist sand and grit damage?

Teflon-impregnated staging blends engineered composites with low-friction characteristics, so abrasive particles slide with less grab. In practice, that reduces gouging at the impeller eye and diffuser vanes. When the check valve holds pressure and the start stays laminar, the stages see uniform loading—less chattering, fewer micro-vibrations. In sandy aquifers, this matters. I’ve torn down pumps with conventional plastics that showed early grooving; the Myers stages came out with minor polish instead of trenches. It’s not magic—heavy sand can kill any pump—but the self-lube characteristic buys you long-term resilience, especially when your check prevents reverse surges that stir sediment.

What makes the Pentek XE high-thrust motor more efficient than standard well pump motors?

The Pentek XE motor delivers high-thrust bearings, optimized windings, and thermal overload protection tuned to residential duty cycles. That means it tolerates frequent but well-controlled starts—exactly what you get when your check valve holds column pressure and your pressure switch cycles at 40/60 or 30/50 PSI. Higher thrust rating supports multi-stage stacks without bearing fatigue. Efficient windings lower amperage draw at set flow, reducing monthly energy spend. In field testing, Myers Predator Plus units with Pentek XE motors consistently run cooler and last longer, provided the check-valve system prevents reverse spin and keeps starting torque predictable.

Can I install a Myers submersible pump myself or do I need a licensed contractor?

Skilled DIYers can install, but precision matters. You’ll handle drop pipe, wire splices, pitless connection, and valve placement. The internal check valve inside Myers submersibles simplifies the layout, but I still recommend one vertical inline check above the pitless. Use proper torque, anaerobic sealant, and keep the valve vertical, arrow up. Verify well depth, static level, and the correct pump on the pump curve. If that list feels long, bring in a licensed pro—misplaced valves and poor splices cause 90% of the callbacks I see. PSAM stocks full kits and supports contractors with specs and fast shipping.

What’s the difference between 2-wire and 3-wire well pump configurations?

A 2-wire well pump houses the start components in the motor, meaning simpler wiring and one less external control box. A 3-wire well pump places start components in an above-grade box, making capacitor or relay replacement easier later. Hydraulically, both rely on a strong check-valve strategy to ensure clean starts and steady stops. If you value simplicity and fewer points of failure, 2-wire is attractive—especially with Myers’ integrated design. If serviceability without pulling the pump is your priority, 3-wire has merit. Either way, place that inline check vertical and keep the run to your pressure tank direct and clean.

How long should I expect a Myers Predator Plus pump to last with proper maintenance?

With correct sizing, a sealed check strategy, and periodic maintenance, 8–15 years is normal—and I’ve seen 20+ in calm, clean wells. Key is preventing short cycling: your check valve and pressure tank work as a team to protect the motor’s off-time cooling. Maintain your tank’s air charge annually, verify the pressure switch setting, and inspect for leaks. If your well has grit, add filtration downstream and keep an eye on flow performance vs the original GPM rating. When a pump runs at or near BEP, cool and stable, it runs for years—exactly what Myers designed Predator Plus to do.

What maintenance tasks extend well pump lifespan and how often should they be performed?

Annually, check pressure tank precharge (usually 2 PSI below cut-in), clean the switch nipple/orifice, and verify no backflow on shutdown (watch the gauge for 5–10 minutes). Inspect wiring and grounds, and look for damp weeps at the inline check and tank tee. Every 3–5 years, review drawdown and startup amperage against your original commissioning log—rising amps or shrinking drawdown can flag a tired check or tank bladder. If you hear hammer or ticking at stop, service the inline check immediately. Maintenance is simple; catching check-valve issues early prevents expensive motor wear.

How does Myers’ 3-year warranty compare to competitors and what does it cover?

Myers delivers an industry-leading 3-year warranty on Predator Plus submersibles—significantly better than the 12–18 months you’ll see from many brands. It covers manufacturing defects and performance failures under normal use. While warranties don’t cover bad installs, they do underscore confidence in stainless construction, Pentek XE motor durability, and integrated internal check valve design. In my experience, properly installed Myers systems rarely need warranty help—but when they do, PSAM and Pentair’s support channels move fast. That matters when your family’s water is offline.

What’s the total cost of ownership over 10 years: Myers vs budget pump brands?

On paper, a bargain pump looks cheap—until you add in two or three replacements, machine-thread leaks from hammer, and higher kWh from mediocre efficiency. A Myers Predator Plus, sized to your TDH, staged appropriately, and installed with a correct check-valve layout, typically avoids those sinkholes. Over 10 years, expect fewer service calls, lower energy use thanks to 80%+ efficiency near BEP, and protected plumbing from quiet shutdowns. I’ve run the math on homes like the Najjars’: the “expensive” pump paid for itself by year four in avoided parts and labor alone. That’s real-world ROI.

Conclusion: A Small Part, a Massive Difference—Choose Myers and Check the Right Boxes

In well systems, the check valve is the quiet guardian—locking in pressure, preventing backspin, and stopping water hammer before it starts. Pair that with a Myers Predator Plus—stainless construction, Pentek XE motor, integrated internal check valve, and PSAM-backed support—and you’ve built a system that runs cool, quiet, and long. For Omar and Liana Najjar, a smart check-valve layout transformed their 265-foot well from a night-time hammer show into steady, silent water on demand.

If you’re re-building, replacing, or upsizing, my recommendation is straightforward:

Pick Myers Predator Plus for stainless reliability and Pentair-backed performance. Use the factory internal check plus one vertical inline check above the pitless. Commission carefully—bleed air, verify pressure switch settings, and log startup amps.

Do it once, do it right, and enjoy a decade or more of boringly reliable water. That’s not just smart plumbing—it’s peace of mind, worth every single penny.