Flomatic 4221LSS2 1-1/4" 100MSS – Stainless Steel Check Valve

The Flomatic 4221LSS2 1-1/4" M x 1" F 100MSS – All stainless-steel body, threaded male x female check valve is rated for a maximum working pressure of 400 psi. MAX TEMP: 180°F (80°C).

The Flomatic 4221LSS2 1-1/4" M x 1" F 100MSS is a premium all stainless-steel spring check valve designed for water and general pump applications, including submersible and booster systems. This model offers excellent corrosion resistance, lead-free construction, and reliable performance under demanding operating conditions.

100MSS series – All stainless-steel body with threaded male x female connection. Features a high-strength Delrin poppet, stainless steel spring, and a Nitrile (Buna-N) seal. Maximum temperature 180°F (80°C). Maximum working pressure 400 psi.

Specifications:

Max Pressure: 400 psi

Max Temperature: 180°F (80°C)

Body: Stainless Steel

Inlet / Outlet: 1-1/4" M x 1" F**

Weight: 1.15 lbs

Operation: Flomatic Model 100MSS stainless steel check valves are designed to provide years of trouble-free service when properly sized and installed in suitable pumping applications. The internal spring-loaded poppet closes quickly to help reduce reverse flow and minimize hydraulic shock in water systems.

Construction: The Flomatic 100MSS valve body is engineered to handle rated system pressures and flows while providing dependable backflow prevention in water distribution, well, and booster pumping systems. The stainless-steel body and internal components offer excellent resistance to corrosion in a wide range of water quality conditions.

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 quality and environmental management systems.

Features & Benefits:

• All stainless-steel body construction
• High-strength Delrin poppet with stainless steel spring
• Nitrile (Buna-N) seal for tight, reliable shutoff
• Corrosion-resistant internal components
• Low head loss and smooth flow characteristics
• Lead-free construction suitable for potable water applications

Applications:

• Well water and submersible pump systems
• Water distribution and booster pump systems
• Irrigation and agricultural water systems
• Industrial and commercial water supply systems
• Sprinkler and general utility water systems

** Longer Body