A Stainless Steel Flanged Piston Valve is a high-integrity industrial valve designed for precise flow control and reliable shut-off in demanding piping systems. Unlike traditional globe valves, it utilizes a stainless steel piston that travels between two sealing rings, providing a wiping action that clears debris from the sealing surfaces, ensuring leak-tight closure even in contaminated media. The flanged ends allow for robust, bolted connections to pipelines, facilitating easy installation and removal for maintenance. Constructed from corrosion-resistant stainless steel (typically CF8/304 or CF8M/316), this valve is ideal for aggressive fluids, high temperatures, and high-pressure applications in industries such as chemical processing, petrochemical, steam systems, and food processing. Its design offers a longer service life, reduced packing wear, and superior performance compared to standard globe valves.
Technical Attributes & Specifications
1. **Body Material:** Investment cast Stainless Steel (ASTM A351 CF8/CF8M).
2. **Piston Material:** Stainless Steel 304 or 316, precision ground.
3. **Sealing Rings:** High-purity flexible graphite or reinforced PTFE.
4. **Connection:** Flanged ends (ANSI B16.5, DIN, or JIS standards).
5. **Pressure Rating:** Typically Class 150/300 or PN16/PN40.
6. **Temperature Range:** -29°C to 425°C (depending on ring material).
7. **Sealing Principle:** Linear piston movement through stationary upper and lower rings.
8. **Shut-off Class:** Bubble-tight (ANSI Class VI) performance.
9. **Maintenance:** In-line replaceable valve rings without removing the body.
10. **Operation:** Manual handwheel, pneumatic, or electric actuation.
11. **Stem Type:** Rising stem with position indicator for visual status.
12. **Bonus Feature:** Compensates for thermal expansion and contraction.
13. **Durability:** Large sealing surface minimizes localized wear and erosion.
14. **Self-Cleaning:** Piston wipes the rings clean of particles during operation.
15. **Flow Direction:** Standard unidirectional flow (indicated by body arrow).
16. **Bonnet Design:** Bolted bonnet for secure access to internal components.
17. **Corrosion Resistance:** Excellent suitability for acid, alkali, and saline media.
18. **Testing Standards:** API 598 or EN 12266-1.
19. **Safety:** Integrated back-seating for stem protection.
20. **Applications:** Saturated/superheated steam, thermal oil, and hazardous chemicals.
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
