NWV VALVE DIN sleeve-type soft-seal plug valves are constructed from WCB carbon steel, 304/316 stainless steel, etc., designed to API 599, API 6D, and ASME B16.5 standards.
Nominal Pressure:: Class 150lb – 900lb
Nominal Diameter:: DN15 – DN350, 1/2″ – 14″
Working Medium:: Water, Oil, Gas, etc.
Working Temperature:: Below 120 Deg C / Below 200 Deg C
Face to Face Standard:: ASME B16.10
Flange Standard:: ASME B16.5
Specification
NWV VALVE API ASME Sleeve Type Soft Sealing Bronze Plug Valves
I. Product Overview
NWV VALVE DIN sleeve-type soft-seal plug valves are constructed from WCB carbon steel, 304/316 stainless steel, etc., designed to API 599, API 6D, and ASME B16.5 standards. The precise fit between PTFE sleeves and metal plugs ensures zero leakage control. Covering DN15-DN350 (1/2″-14″) with pressure classes Class 150-Class 900 (PN16-PN160), they operate at -29℃~180℃, widely used in corrosive and high-viscosity media pipelines for petroleum, chemical, pharmaceutical, and power industries.
II. Core Technical Parameters
Specifications & Operating Range
Nominal Diameter: DN15/20/25/40/50/80/100/150/200/250/300/350 (1/2″-14″)
Pressure Class: Class 150 (PN20), Class 300 (PN50), Class 600 (PN100), Class 900 (PN160)
Temperature Range: -29℃~180℃ (PTFE seal), optional -196℃~200℃ (special fluoroelastomer configuration)
Media Compatibility: Water, oils, natural gas, acid-base solutions (pH 4-10), particulate media (particle size ≤1mm)
Materials & Sealing System
Body/Bonnet: ASTM A216 WCB carbon steel, ASTM A351 CF8/CF8M stainless steel
Sleeve: PTFE (Shore hardness 55-65), wear coefficient ≤0.05
Plug: ASTM A217 WC6 alloy forged steel, CF8M with STL alloy overlay (HRC58-62)
Connection: Flanged (RF face, DIN EN 1092-1/ASME B16.5), buttweld (BW, ASME B16.25)
Mechanical Performance
Opening/Closing Torque: DN100 Class 300 valve ≤150N·m (manual operation)
Seal Leakage Rate: PTFE soft seal ≤1×10⁻⁹m³/s (API 598 Class VI)
Service Life: 100,000 cycles without failure (GB/T 13932 standard)
