Bellows Seal Gate Valve, API 602, ASTM A105N, DN25, PN40

Key Specifications / Features

The Bellows Seal Gate Valve Factory produces a compact gate valve that adheres to API 602 standards. Constructed with ASTM A105N carbon steel, this valve offers robustness and reliability. It features a 3/4 inch size (DN20) and is rated for Class 800 LB and PN130 pressure, making it suitable for high-pressure applications. The valve is equipped with socket weld ends, ensuring secure and leak-free connections.

Bellows Seal Gate Valves are meticulously designed and manufactured in strict compliance with international standards such as API 602, ASME B16.34, DIN3202, or their equivalents. These valves feature a compact yet extremely robust design, making them suitable for high-pressure and high-temperature applications. The optional solid CoCr alloy wedge ensures low friction and extended service life. The packing rings are precompressed to 4000 psi, providing a highly reliable seal. For welded bonnet valves, the bonnet is threaded in and torqued to a precisely engineered torque value, and the body-bonnet joint is strength-welded, offering dual protection against leakage (body, bonnet threads, and strength-weld). The fully guided wedge minimizes wear on seating surfaces. Optional designs are available with double packing, leak-off connections, live-loading, and a packing blowout feature for easy removal of old packing.

Technical Specification

» Type: Forged Steel Gate Valve
» Size Range: 1/2 inch to 2 inches for forged items
» Design Pressure: Class 150-2500 LB (PN10-PN420)
» Materials: Carbon Steel, Alloy Steel, Stainless Steel, Duplex Steel, and others
» Trim Materials: 13%Cr, ASTM A182 F11, F22, SS 304, SS 304L, SS 316, SS 316L, and other special materials
» End Connections: SW, FNPT, BW, RF, RTJ, Grooved
» Design and Manufacture: ASME B16.34, API 602
» Face to Face (End to End): ANSI B16.10
» Flanged Connection: ANSI B16.5
» Test and Inspection: API 598, API 6D
» Butt Welded End: ANSI B16.9
» Threaded Ends: ASME B1.20.1
» Socket-Weld Ends: ASME B16.11

Product Features

» OS&Y, Outside Stem and Yoke
» Metal-sealed (API Trim # 1,#5,#8,#10 and etc.)
» Optional Locking Device or Stem Extension
» Optional Bolted Bonnet, Welded Bonnet
» Optional Direct Mounting to ISO 5211
» Full Bore or Reduce Port