Stainless Steel Check Valve

Design

Lifting, rotating, double-bladed, axial, etc.

Materials

Carbon steel, stainless steel, nickel-based alloys, etc.

Technical Parameters:

Working pressure: PN16

Applicable medium: medium containing nitric acid

Temperature range: - 20°C ~ 200°C

Sizes: DN15 - DN300

Stainless Steel Check Valve - Backflow Protection

Stainless steel check valve (spring or swing type) in 304/316L for backflow prevention. Threaded, flanged and clamp ends, 1/2"-4", suitable for water, steam and chemical media.

Model reference: Stainless Steel Check Valve · size range DN8-DN100 · connection Threaded / flanged / wafer / clamp.

Key features

• Spring-loaded disc stops reverse flow within milliseconds
• Interchangeable seat cartridge simplifies spare-part stock
• Spring-loaded disc closes before reverse flow can build
• Y-pattern or swing body for low cracking pressure
• Threaded, flanged, wafer and clamp options
• No external lever or packing - no leak path to atmosphere
• Crack pressure from 0.05 bar for gravity-fed systems

Typical applications

• Pump discharge protection
• Water-supply and booster stations
• Steam and condensate return lines
• Chemical dosing and metering skids
• Sanitary lines requiring backflow prevention

Materials and standards

Body: CF8M / 316L; sizes DN8-DN100; ends: NPT/BSP, ANSI 150 / PN16 flange, wafer, tri-clamp; disc: 316 with PTFE or metal seat; spring: 304; pressure PN16-PN40; temperature -20 °C to +200 °C; testing per API 598. All wetted parts are traceable to EN 10204 3.1 mill certificates, and each valve is pressure-tested before packing.

Frequently asked questions

Horizontal or vertical installation?
Both are acceptable; for vertical lines the flow must run upwards so gravity assists closing. Spring-loaded versions work in any orientation.

Can it replace a swing check on steam?
Yes - specify a metal-seated spring check for steam, since soft seats degrade above 200 °C.

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