MSS SP-71 ANSI Swing Check Valve Product Information
MSS SP-71 ANSI swing check valve is also called one-way valve or non-return valve, which is used to prevent of mediums back flow in the pipeline. The disc of the check valve is action depending on the mediums itself flow pressure, so the check valve is belong to automatic valve types. Because the ANSI swing check valve is only allowed the mediums to flow in one direction, we should note the arrowhead on the check valve when mount it in horizontal position. MSS SP-71 swing check valves are widely used in series of industries, especially in water project, water plant, water treatment, etc. Flowspec Luokai can manufacture the MSS SP-71 ANSI swing check valve with sizes of 2” ~ 12” (DN50~DN300mm). Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.
1. FEATURES
- Standard swing type disc
- Standard renewable seat
- BC, bolted cover
- Horizontal or vertical service
- Flanged ends
3. STANDARDS
- Design & manufacturing: MSS SP-71
- Face to face: ANSI B16.10
- Flanged ends: ANSI B16.10
- Inspection & testing: API598
- Special request: WRAS approved
2. TECHNICAL SPECIFICATIONS
- Class: 125LB ~150LB
- Size: 2” ~ 12” (DN50~DN300mm)
- Materials: cast iron ASTM A126 class B, ductile iron ASTM A536 65-45-12
- Applicable medium: water, oil, gas
- Applicable temperature: -10℃ ~ +80℃
- Working pressure: 125S, 200WOG
4. APPLICATIONS
- Water works, water projects
- Environment protection
- Public facilities
- Power plant
- Building industry, real estate
- Water treatment
Why Choose Flowspec Luokai
45+ Years Experience
Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.
Global Certifications
ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.
OEM Custom Solutions
Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.
Worldwide Delivery
Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.
Our Service Promise
Strict Quality Control
Every valve tested to API 598, EN 12266 before shipment
Timely Global Delivery
Reliable logistics to 5 continents with secure packaging
OEM & Custom Design
Tailored material, size, pressure and actuation to your specs
Dedicated After-Sales
Technical support and service throughout product lifecycle


