Dual-plate check valves are wafer-type valves with a short overall length. Their excellent hydrodynamic properties result in very low pressure losses. Their lower weight brings advantages during installation, transport and storage.
They are suitable for liquid, gas and steam in heating, air conditioning and cooling systems. However, they can also be used in steam and condensate systems, in the water supply, and in oil and natural gas pipes.
With the suitable springs, they can be installed in any position.
Structural Features:
1. No retainer body design, no external body penetration, eliminating the possibility of external leakage.The disc assembly is held in place by the high strength key.
2, the surface is smooth, no bolts and other section of the material.No gasket restrictions required.
3, the seat surface after grinding, high finish, good sealing performance.
4. High torque inconel spring for quick closing.
5. Each valve is housing and seat pressure tested in accordance with INDUSTRY standard API 598.
6. Wafer, lugs and double flanges are available.
Design specification:
Design criteria: API 6D, ASME B16.34, BS 1868, GB/T 12235
Structure length: ASME B16.10, API 6D, GB/T 12221
Connection standard: ASME B16.5, ASME B16.47, ASME B16.25, GB/T 9113, JB/T 79, HG/T 20592
Pressure test: API 598, API 6D, GB/T 13927, GB/T 26480
Pressure and temperature classes: ASME B16.34, GB/T 12224
Performance parameters:
Main material: carbon steel, stainless steel, alloy steel
Nominal size: NPS 2"~NPS48" DN50~DN1200
Pressure range: CL150~CL2500 PN10~PN420
Operating temperature: -196℃~+600℃
Application: applicable to petroleum, chemical, pharmaceutical, chemical fertilizer, power industry, low temperature and other conditions
