Silent Check Valve, BS 1868, ASTM B148 C95800, 8 IN, CL 300

Key Specifications / Features

Model No.: JSC-240306-WCV-01

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Explore our silent check valves sourced from leading suppliers. These valves adhere to BS 1868 standards and are constructed with ASTM B148 C95800 materials for durability and corrosion resistance. With a size of 8 inches (DN200) and a pressure rating of Class 300 LB (PN50), they ensure reliable performance in demanding applications. Designed with axial flow and non-slam operation, they minimize pressure loss while offering efficient fluid control. RF ends provide secure connections for seamless integration into your piping system.
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Detail Information

Axial Flow Check Valve

Valve description: Axial check valve, Non-Slam, low pressure loss, silent check valve

Body material: ASTM B148 C95800
Nominal diameter: 8 Inch (DN200)
Nominal class: Class 300 LB (PN50)
End connection: RF
Metal seat: STL
Face to face: ASME B16.10
Test and inspection: API 598
Design and Manufacture: BS 1868

Axially guided valve disc held against the seat by spring and back pressure. When the upstream fluid force is greater than the spring force, the disc will move axially off. The contoured body-disc-diffuser arrangement assures venturi flow characteristics ensuring minimal pressure drop across the valve and steamlined axial flow.

Axial Flow Check Valve-Features

1. Axial flow
Streamlined flow path through full-port expanded body avoids turbulence and prevents erosion and vibration. Process downtime and maintenance costs are eliminated.

2. Low pressure loss
The full opening flow passage and high-pressure recovery of the venturi-shaped body result in very low pressure loss: reduced operating cost of pumps and compressors.

3. Tight shut-off
Tight shut-off is obtained by means of metal-to-metal sealing between the disc and the seat. This sealing is not affected by erosion and deformation of material (like with a soft seal).

4. Low cracking pressure
The stability of a compressor system during startup benefits from a low cracking pressure. This is achieved with a large disc that has identical effective pressure areas on both sides (line contact sealing).

5. Easy opening and stable operation
The low static pressure in the venturi-shaped throat area creates a pressure differential over the disc, resulting in easy opening. The axial check valve responds smoothly to changes in flow and remains stable when it is supposed to be.

6. Non-slam operation
The spring-assisted design ensures ultra-fast closing with virtually no backflow and pressure surges in critical applications such as multi-pump systems or LNG trains.

7. Maintenance free
Internal construction is based on the application of sound basic mechanical engineering principles. Consequently, Mokveld axial check valves do not require any maintenance.

8. Reliable performance prediction
Both the pressure drop and the dynamic behaviour can be predicted with great accuracy, based on full-scale laboratory flow tests and a mathematical model developed in cooperation with a recognized fluid hydraulics laboratory.

Axial Flow Check Valve-Specifications and standard

Design and Manufacture: BS1868 or ASME B16.34
Inspection and Test: API 598
End flange dimension: ASME B16.5, ASME B16.47 (API 605, MSS SP 44)
BW end dimension: ASME B16.25
Face to face, end to end: ASME B16.10
Pressure-temperature ratings: ASME B16.34
NACE: NACE 0175
Size Range: 2 Inch – 36 Inch
Pressure Range: ASME Class 150 – 2500 LB
Materials: ASTM A216 WCB, WCC, ASTM A217 WC1, WC6, WC9, ASTM A351 CF8, A351 CF8M, A351 CF3, A351 CF3M, A351 CN7M, ASTM A352 LC1, LCB, LCC, LC3, Hastelloy C276, Monel, Titanium and Alloy 20 (Cast Steel, Alloy Steel, Stainless Steel, Special Steel)

Axial Flow Check Valve Design
 

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