Flange Dual Plate Check Valve is designed to ensure automatic back-flow prevention. Engineered with a spring-assisted mechanism, these dual plates check valves seamlessly close, providing reliable and efficient operation. The KFTE Flange Dual Plate Check Valve is available in a wide range of sizes, pressure classes, and materials, making it suitable for a wide array of applications, in both horizontal and vertical installations. Available in Carbon Steel, Low-Temperature Carbon Steel, and Stainless-Steel body with Stainless-Steel Trim as standard for all wetted parts.
Design Details:
Design: API 594 / BS 1868
Face to face: ASME16.10
Flange end: ASME B16.5 / ASME B16.47
Test: API598
Size: 2"~40"
Class: 150Lb~900Lb
Connection: Double flange / Wafer / Lug
Temperature: -60°C to +450°C
Application: Petroleum refining / Chemical / Power plant
Additional Features:
Retainer less Design: Eliminating body leaks and simplifying maintenance.
Suitable for Horizontal or Vertical Applications: For vertical installations, arrow mark on the body must be pointing upwards.
Spring Assisted: Ensures reliable closure and minimizes the need for constant attention during operation.
Stellite#6 Overlay: All bodies are overlaid with Stellite#6 on seating surfaces for enhanced durability by providing a meta-to-metal seal.
| Material Specification | |||
| NO. | DESCRIPTION | CARBON STEEL | STAINLESS STEEL |
| 1 | SCREW | SS304 | SS304 |
| 2 | BRACKET | SS304 | SS304 |
| 3 | SPRING | INCONEL X-750 | INCONEL X-750 |
| 4 | HINGE PIN | SS410 | SS304 |
| 5 | STOP PIN | SS410 | SS304 |
| 6 | BODY | A216 WCB | A351 CF8/CF8M |
| 7 | SEAT | EPDM/NBR/METAL | EPDM/NBR/METAL |
| 8 | DISC | A216 WCB | A351 CF8/CF8M |
