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ASTM A216 WCB Lever Safety Valve, GB/T 12243, DN25, NPT, BSP

ASTM A216 WCB Lever Safety Valve, GB/T 12243, DN25, NPT, BSP

Key Specifications / Features

This lever safety valve provides overpressure protection for pipeline and vessel systems. It features a 25 mm (1 inch, DN25) full lift design for rapid discharge. The body is cast from ASTM A216 WCB carbon steel and manufactured to GB/T 12243 standards. It is rated for PN16 and Class 150 LB pressure conditions. The NPT/BSP threaded ends allow for quick, secure installation. The lever mechanism enables manual testing and emergency blowdown.

Detail Information

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Product Name: ASTM A216 WCB Lever Safety Valve
Type: Full Lift Safety Valve with Lever
Design Standard: GB/T 12243
Body Material: ASTM A216 WCB, Carbon Steel
Size: DN25, 25 mm, 1 Inch
Pressure: PN16, Class 150 LB
Setting Pressure: 10 bar
End Connection: NPT, BSP Threaded
Medium: Steam, Gas

Threaded safety valves are pressure relief valves with screwed inlet or outlet connections, commonly used on compact pressure vessels, compressors, air receivers, water systems, small process skids, utility steam lines and equipment where threaded piping is specified. They are often requested as threaded pressure safety valves, threaded safety relief valves, NPT safety valves, BSP safety valves or 2-inch threaded safety valves.

Technical Specification

» Product model: A27Y

» Normal Size Range: 1/2~2 Inch (DN15~DN50)

» Normal Pressure Rating: CLASS 150, PN10, PN16

» Design and Manufacture: GB/T 12243

» Face to face(end to end): JB/T 2203

» Thread connection: ANSI/ASME B1.20.1 (NPT), ISO 228-1 (BSP)

» Test and inspection: API 598, DIN 3230, MSS SP-117

» Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex or Other Specials

» Ends Connections: NPT, BSP Thread

Why threaded connection details matter

A threaded safety valve is not selected only by thread size. The connection form, thread standard, pressure rating, set pressure, required relieving capacity, medium, temperature, material and installation direction all affect whether the valve can protect the equipment correctly.

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