Mild Steel Wafer Check Valves 🔹
Our Mild Steel Wafer Check Valves are precision-engineered for reliable, low-pressure backflow prevention in compact spaces. Constructed from EN8 carbon steel with premium seating materials (13Cr to AISI 410 or 18Cr-8Ni to AISI 304/316), these wafer-style valves conform to API 6D standards and deliver consistent performance across applications. Rated for body pressures up to 225 psig (16 kg/cm²) and seating pressures up to 165 psig (11.5 kg/cm²), in sizes 25 mm to 600 mm, they offer superior flow control with minimal installation footprint.
- Compact Wafer Design: Fits between ANSI B16.5 flanges for space-saving installation.
- EN8 Carbon Steel Body: High-tensile strength and wear resistance for longevity.
- Premium Seating Materials: Choice of molded neoprene, nitrile, or PTFE to suit media compatibility.
- API 6D Compliance: Manufactured per API 6D to guarantee performance in oil & gas pipelines.
- Pressure Ratings: Body up to 225 psig (16 kg/cm²); Seat test at 165 psig (11.5 kg/cm²).
- Size Range: Available in 25 mm to 600 mm to meet diverse flow requirements.
Frequently Asked Questions:
What is a wafer check valve?
A wafer check valve is a thin, lightweight valve that fits between two flanges and uses a swing or dual-disc mechanism to prevent reverse flow. Its compact design reduces weight and installation footprint while providing reliable backflow protection.
Which materials are used in the body and internals?
The body is fabricated from EN8 carbon steel. Seats are molded from neoprene, nitrile, or PTFE, and internal discs or springs are offered in 13Cr stainless (AISI 410) or 18Cr-8Ni stainless (AISI 304/316) to suit various media and temperature requirements.
What standards does this valve meet?
Manufactured to conform with API 6D, these wafer check valves also align with ANSI B16.5 flange dimensions. Pressure and performance tests are conducted per API 598 protocols for seat tightness and shell integrity.
What size and pressure ratings are available?
Size options range from 25 mm to 600 mm nominal diameter. The valve body is rated for pressures up to 225 psig (16 kg/cm²), while seating is tested to 165 psig (11.5 kg/cm²) to ensure leak-free shutoff.
How do I ensure longevity and leak-free operation?
Routine inspection of seat material, proper torque on flange bolts, and periodic function tests help maintain performance. Selecting the correct seating material for your media—neoprene/nitrile for general use or PTFE for aggressive chemicals and higher temperatures—adds to valve longevity.
Tips & Tricks 💡
- Pre-Installation Checks: Verify flange alignment and face condition to prevent seat damage.
- Seat Selection: Choose PTFE for aggressive or high-temperature fluids; neoprene/nitrile for water, oils, and mild chemicals.
- Torque Guidelines: Evenly tighten flange bolts in a star pattern to recommended values for a uniform seal.
- Regular Testing: Perform periodic backflow tests to confirm valve responsiveness and seat integrity.
- Maintenance Planning: Schedule inspections at predetermined intervals based on flow conditions and media abrasiveness.
Applicable Industries:
- Oil & Gas Pipelines: Prevent reverse flow in transmission and distribution lines.
- Chemical Processing: Protect reactors and pumps from backflow of corrosive fluids.
- Water & Wastewater Treatment: Ensure unidirectional flow in filtration and pumping systems.
- HVAC Systems: Maintain system pressure and prevent water hammer in chilled-water circuits.
- Power Generation: Safeguard boiler feedwater and cooling circuits from reverse flow events.
About Kelor Valves 🌟
Kelor Valves is your #1 manufacturer, supplier, and exporter of Mild Steel Wafer Check Valves. With cutting-edge machining, rigorous quality control per ISO and CE protocols, and a global distribution network, we deliver excellence in every valve. Whether you need custom materials, expedited delivery, or comprehensive technical support, Kelor Valves is the ideal partner.
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