NSW Forged Steel Gate Valve – Bolted Bonnet, Class 800–2500, A105/F316, SW/NPT/BW Ends

The NSW Bolted Bonnet Forged Gate Valve is a compact, high-integrity isolation valve designed in accordance with API 602 and ASME B16.34 standards for Class 800 to Class 2500 service. Suitable for demanding applications across the oil & gas, petrochemical, power, and industrial sectors, this valve features a forged body with bolted bonnet construction and precision-machined internal components for long-term reliability.

Key design features include an outside screw and yoke (OS&Y), rising stem for positive position indication, integral backseat, and solid wedge gate. The valve offers either full or reduced bore flow path and can be provided with socket weld, threaded (NPT), butt weld, or flanged end connections to meet varied system requirements.

The sealing surfaces are engineered for either self-sealing (by fluid pressure) or forced sealing (mechanically closed under external force), and are protected from erosion during full-open operation. The valve operates linearly via a lift rod mechanism with trapezoidal threads that convert rotary motion into axial thrust.

Available in a range of forged materials including carbon steel (A105), stainless steel (F316), and duplex grades (F51, F53), this gate valve is suitable for handling steam, oil, gas, and corrosive fluids. NACE, fire-safe, and fugitive emission compliance are also available as options.

Specifications:
– Valve Type: Forged Steel Gate Valve
– Design: Outside Screw & Yoke (OS&Y), Rising Stem
– Operation: Manual, Electric, Pneumatic, Gas-Liquid Linkage
– Size Range: NPS 1/2" to 2" (DN15 to DN50)
– Pressure Class: 800#, 150# to 2500#
– Body Material Options:
  – Carbon Steel: A105
  – Stainless Steel: A182 F304, F304L, F316, F316L
  – Duplex/Super Duplex: F51, F53
  – Low Temp Carbon Steel: A350 LF2, LF3, LF5
– Bonnet Type: Bolted Bonnet (Optional: Welded or Pressure Seal Bonnet)
– Wedge Type: Solid Wedge
– Seating Surfaces: Renewable Seat Rings, Spiral Wound Gasket
– Bore Type: Full Bore or Reduced Bore
– End Connections:
  – Flanged (ASME B16.5)
  – Socket Weld (ASME B16.11)
  – Butt Weld (ASME B16.25)
  – Threaded/NPT (ASME B1.20.1)
– Face-to-Face: Manufacturer’s Standard (API 602)
– Design Standards: API 602, ASME B16.34, BS 5352
– Testing Standards: API 598
– Fire Safe Design: Optional (API 607 / API 6FA)
– Compliance Options:
  – NACE MR-0175 / MR-0103
  – ISO 15848 (Fugitive Emission)
  – NDE: PMI, UT, RT, PT, MT
– Applications: Steam, oil, gas, condensate, petrochemical service, utility isolation
– Temperature Range: As per material class and rating
– Advantages:
  – Low fluid resistance
  – No flow direction restriction
  – Minimal erosion on sealing surfaces when fully open
  – Simple structure and excellent casting properties

For further specifications or to inquire about this equipment and ReflowX's logistics services, Please contact ReflowX at info@reflowx.com