Carbon Steel Check Valves, API 6D, A216 WCB, 20 IN, 900 LB

As a trusted supplier of swing check valves from China, we offer high-quality solutions designed to API 6D standards. Crafted from durable carbon steel ASTM A216 WCB, our swing check valves are available in 20-inch size (DN500), Class 900 LB, and PN150 pressure ratings. These valves feature RF flanged ends for secure connections and are equipped with a lever for smooth and reliable operation. Engineered for demanding applications, they deliver exceptional performance and durability, making them ideal for various industrial needs.

ASTM A216 WCB Swing Check Valve, ASTM A216 WCB, 20 Inch, Class 900 LB.

Valve Description
Name: Swing Type Check Valve with Lever, Counterweight, and Hydraulic Damping Cylinder
Design Standard: API 6D – Full Bore
Body Material: ASTM A216 WCB
Nominal Size: 20 Inch, DN500
Nominal Class: Class 900 LB, PN150
Connection Ends: RF Flanged Ends
Face-to-Face Dimension: As per ASME B16.10
Test and Inspection: Compliant with API 598

Features

Bolted Cover: Ensures reliable sealing and easy maintenance.
Full Bore Design: Conforms to API 6D; also available in BS 1868 standard bore.
Shaft Options: Inside or outside shaft available.
Outside Shaft Options: Can be equipped with a lever and counterweight.
Hydraulic Damping Cylinder: Suitable for larger valve sizes to ensure smooth operation and prevent water hammer.

Technical Parameters and Characteristics

Product Type: Swing Type Check Valve
Size Range: NPS 2 Inch - 24 Inch, DN50 - DN600
Design Pressure: Class 150 LB - 2500 LB, PN10 - PN420
Design Standards: BS 1868, API 6D, DIN 3352
Design Temperature: -196°C to 593°C

Material Options:
Carbon Steel: ASTM A216 WCB, ASTM A216 WCC
Low-Temperature Carbon Steel: ASTM A352 LCB, ASTM A352 LCC
High-Temperature Steel: ASTM A217 WC6, WC9, C5, C12A
Stainless Steel: ASTM A351 CF8, CF8M, CF3M, CF8C
Special Alloys: CN3MN, CK3MCUN, CN7M, ASTM A890 4A (CD3MN), 5A (CE3MN), 6A (CD3MWCuN), ASTM B148 C95800, ASTM B148 C95500

Connection Ends: ASME B16.5, ASME B16.25, EN1092 series

Applications:
Electric Power
Petroleum Refining
Petrochemical Engineering
Offshore Operations