The Flomatic YV001110107-05 1" 816HS Ward check valve – a heavy‑spring variation of the 816 stainless‑steel “Y‑type” check valve – is designed for applications requiring increased cracking pressure. This model maintains the all‑316 stainless‑steel body, PTFE soft‑seated plunger, and spring‑loaded design while incorporating a heavier spring for a controlled initial opening pressure of 5 PSI.

The 816HS Ward series retains the same robust construction as the standard 816 model, offering reliable performance, corrosion resistance, and long service life in demanding industrial and commercial systems. FNPT threaded ends conform to ANSI B1.20.1 standards, ensuring compatibility with standard piping systems.

816HS Ward series – All 316 stainless-steel body with stainless-steel spring, stainless-steel / PTFE plunger assembly, and PTFE sealing. Heavy-duty spring provides specified cracking pressure (5 PSI). Maximum temperature 450°F (230°C)* and maximum working pressure 600 psi*, pressure and temperature dependent.

Specifications:

Max Pressure: 600 psi*

Max Temperature: 450°F (230°C)*

Cracking Pressure: 5 PSI

Body: 316 Stainless Steel

Seat / Seal: PTFE (Teflon®)

Plunger Assembly: Stainless Steel / PTFE

Spring: Heavy-duty 316 Stainless Steel

Connection: FNPT x FNPT (ANSI B1.20.1)

Inlet / Outlet: 1" F x 1" F

* Pressure and temperature ratings depend on system conditions.

Operation: Flomatic 816HS Ward stainless steel check valves are engineered to provide reliable, maintenance‑free performance with a controlled cracking pressure, ideal for systems requiring precise backflow prevention. The heavy spring minimizes reverse flow and reduces hydraulic shock.

Construction: The 816HS Ward valve body and internal components are 316 stainless-steel for maximum durability in demanding system pressures and corrosive environments. The PTFE soft seat ensures tight sealing and smooth plunger operation.

Proud to manufacture high-quality valves built to last since 1933, Flomatic® Valves is an American valve manufacturer certified under ISO 9001 and ISO 14001.

Features & Benefits:

• Made in the USA
• All 316 stainless-steel construction
• Heavy-duty spring for precise cracking pressure
• PTFE seated, low friction losses
• Optional cracking pressures available
• In-line serviceable for easier maintenance
• FNPT threaded ends
• Corrosion-resistant internal components
• Suitable for high-temperature and high-pressure systems

Applications:

• Industrial processing and pressure systems
• Pump discharge and pressure control
• Commercial hot and cold-water systems
• Chemical and fluid handling (compatibility required)
• Hydronic, boiler, and high‑temperature systems

Additional sizes and optional cracking pressures available.