Partner · Check Valves

Hy-Grade Valve

Wafer, lug, and dual-disc check valves — engineered for tight backflow shutoff in pumping systems, feedwater, condensate return, and pipeline applications.

About the Manufacturer

Backflow Prevention, Engineered for Reliability

Hy-Grade Valve specializes in check valves — the unsung backbone of every pumping system, feedwater loop, and pipeline. Their wafer, lug, dual-disc, and silent check designs cover the full range of backflow prevention applications, from utility water service to high-pressure refinery duty.

What sets Hy-Grade apart is the combination of compact body designs (especially the wafer and dual-disc series) with materials and trim options that handle the toughest service. Stainless, carbon, and exotic alloy bodies. Soft-seated and metal-seated trims. Spring-assisted closure for non-slam performance in pump discharge applications.

"The check valve nobody talks about — until the day it doesn't close. Hy-Grade closes."

Miller Valve has partnered with Hy-Grade for years to serve customers across power generation, chemical, oil & gas, and pulp & paper. Stocking inventory, fast quotes, and engineering support for every check valve application your plant has.

The Hy-Grade Valve Product Line

Built for Backflow Prevention

Four check valve configurations covering the full range of backflow prevention applications — from utility water to high-pressure pump discharge.

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Wafer Check Valves

Compact wafer-body check valves for tight installation envelopes. Single-disc and dual-disc designs available in carbon steel, stainless, and alloy materials. Sizes 2" through 48".

CompactDual-DiscANSI 150–600
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Lug Check Valves

Lug-style check valves for end-of-line installation and dead-end service. Easily removable from piping for inspection and maintenance without breaking the upstream line.

End-of-LineRemovableMaintenance-Friendly
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Dual-Disc Check Valves

Spring-assisted dual-disc designs for non-slam performance in pump discharge and high-cycle service. Eliminates the water hammer and disc damage of swing-check designs.

Non-SlamSpring-AssistedPump Discharge
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Silent Check Valves

Globe-pattern silent check valves for HVAC, water utilities, and applications where noise and water hammer must be eliminated. Spring-loaded poppet design for fast, quiet closure.

SilentHVACWater Utility
Industries Served

Where Hy-Grade Shows Up

Check valves serve every pumping and pipeline application across industrial sectors — and Hy-Grade ships them all.

Why Source Hy-Grade Valve Through Miller Valve

Built for Pump & Pipeline Realities

We help you size the right check valve for non-slam performance and back it with stocking inventory.

01

Sizing & Selection

Spring rates, disc designs, sizing for non-slam closure — we help you spec the right check for your service.

02

Fast Quotes

Stock items quoted same-day. Engineered orders with aggressive lead times.

03

Multiple Configurations

Wafer, lug, dual-disc, silent — we stock the configurations your spec calls for.

04

USA Distribution

Birmingham-based stocking, testing, and documentation. Domestic accountability.

Need a Hy-Grade Check Valve? Let's Talk.

Tell us about your service — line size, pressure, media, closure characteristics. We'll spec the right check valve.

Get in Touch
In loving memory of our founders and friends, Wayne and Lawton Miller