Threaded (Screwed) Gate Valves

Threaded Gate Valves (Screwed Gate Valves) are compact linear shutoff valves engineered with precision female internal pipe threads conforming to ASME B1.20.1 (NPT) or BS 21 / ISO 7-1 (BSPT). Ideal for rapid mechanical connection onto threaded rigid pipe systems without requiring welding or bulky mating flanges, threaded gate valves provide dependable full-port on/off fluid isolation across small-bore chemical dosing, utility water, air compressors, and hydraulic skids.

Zeron Fastners manufactures High-Pressure Forged Steel Threaded Gate Valves (Class 800#/1500# to API 602) and Industrial Investment Cast Threaded Gate Valves (Class 200/800 PSI to ASME B16.34). Available in ASTM A105 Carbon Steel, A182 F316/F304, and Bronze with solid or flexible wedges and rising stems.

Threaded (Screwed) Gate Valves Suppliers Manufacturer India

Technical Specifications

Specification Feature Details & Standard Compliance
Design Standards API 602, BS 5352, ASME B16.34, MSS-SP-118
Size Range 1/4" to 3" (DN8 - DN80)
Pressure Classes Class 800#, Class 1500#, 200 PSI WOG (PN16 to PN250)
Thread Specifications Female NPT (ASME B1.20.1), BSPT (BS 21), BSPP (ISO 228-1)
Body Materials Forged Steel ASTM A105N, A182 F316/F316L, A182 F11, Cast CF8M, Bronze
Bonnet Construction Bolted Bonnet (BB) with Spiral Wound Gasket or Welded Bonnet (WB)
Wedge & Trim Solid Forged Wedge with 13Cr API Trim #8 or Stellite Gr. 6 API Trim #5
Stem Design Outside Screw and Yoke (OS&Y) Rising Stem with Anti-Blowout Shoulder
Testing Standard API 598, BS EN 12266-1 (Hydrostatic Shell, Seat & Backseat)

Threaded Valve Configurations

Type & Model Key Features & Operating Applications
Class 800# Forged Steel NPT Valves Heavy-wall forged A105 valve for high-pressure plant utility steam and refinery lines.
Stainless Steel SS 316 Screwed Valves Investment cast CF8M valves for chemical processing, brewing, and washdown lines.
High Pressure Class 1500# Threaded Reinforced forged alloy bodies for offshore instrument manifolds and sampling loops.
Bronze Screwed Water Gate Valves Corrosion-resistant marine bronze valves for plumbing, heating, and bilge systems.

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