NSW API 599 Plug Valve – Class 150 to 2500, NPS 2" to 60"

The NSW API 599 Plug Valve is a high-performance rotary shut-off valve used for controlling flow in diverse industries, including oil & gas, petrochemical, and water treatment. Available in sizes from NPS 2” to 60” and pressure classes from ANSI Class 150 to 2500, this valve is constructed to API 599 and API 6D standards for robust sealing and fire safety. The plug valve’s operation relies on a 90-degree rotation of a cylindrical or tapered plug, aligning or isolating internal passageways to start or stop flow. Valve designs include two-way, three-way, and four-way configurations. Plug styles offered are sleeved, pressure-balanced, or lubricated for enhanced sealing and reduced torque. Manufactured using high-quality cast or forged materials including stainless steel, carbon steel, duplex, and nickel alloys, these valves are suited for both corrosive and high-pressure service.

Specifications:

– Manufacturer: NSW
– Valve Type: Plug Valve
– Size Range: NPS 2" to 60"
– Pressure Class: ANSI Class 150 to 2500
– End Connection Types:
 • Raised Face (RF) Flanged
 • Flat Face (FF) Flanged
 • Ring Type Joint (RTJ)
 • Socket Weld (SW) – ASME B16.11
 • Butt Weld (BW) – ASME B16.25
 • Screwed Ends – ANSI/ASME B1.20.1
– Body Materials Available:
 • Cast Steel: A216 WCB, A352 LCB, LCC, LC2
 • Stainless Steel: A351 CF3, CF8, CF3M, CF8M
 • Duplex: A995 4A, 5A
 • Forged Steel: A105, A182 F304, F316, F51, F53, LF2, LF3, LF5
 • Nickel Alloys: Monel, Inconel, Hastelloy, UB6
– Bore Type: Full Bore or Reduced Bore
– Design Standard: API 599, API 6D, ISO 14313
– Face-to-Face Standard: ASME B16.10, EN 558-1
– Flange Standard: ASME B16.5, ASME B16.47, MSS SP-44 (NPS 22 only)
– Test & Inspection: API 598, API 6D
– Fire Safe Design: API 6FA, API 607
– Corrosion Compliance: NACE MR-0175, NACE MR-0103, ISO 15848
– Optional Testing Methods: PMI, UT, RT, PT, MT

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