Zeron Fastners
Industrial Valves & FastenersForged Steel Gate Valves
Forged Steel Gate Valves are compact, robust isolation valves forged from solid steel billets under extreme hydraulic pressure, resulting in an ultra-dense, homogeneous grain structure with zero casting porosity or structural defects. Engineered to API 602 / BS 5352 specifications, these high-integrity valves are the worldwide standard for high-pressure, high-temperature small-bore (1/4" to 2") auxiliary piping, sampling lines, and vents across thermal power plants and refineries.
Zeron Fastners manufactures API 602 Forged Steel Gate Valves in ASTM A105 Carbon Steel, A182 F304/F316 Stainless Steel, and F11/F22 Alloy Steels in Class 800#, Class 1500#, and Class 2500#. Featuring Outside Screw and Yoke (OS&Y), rising stem, bolted bonnet or welded bonnet construction, integral backseat bushing, and ground Stellite hardfaced wedge seats for complete shutoff against superheated steam, hydrocarbons, and chemicals.
Technical Specifications
| Specification Feature | Details & Standard Compliance |
|---|---|
| Design Standards | API 602, BS 5352, ASME B16.34, MSS-SP-118 |
| Size Range | 1/4" to 2" (DN6 - DN50) Reduced Port & Full Port |
| Pressure Ratings | Class 800#, Class 1500#, Class 2500# (PN130, PN250, PN420) |
| End Connections | Socket Weld (SW ASME B16.11), Screwed NPT (ASME B1.20.1), Butt Weld (BW), Flanged (RF/RTJ) |
| Body & Bonnet Materials | ASTM A105N, A182 F304/F316/F321, A182 F11/F22/F91, A350 LF2 |
| Bonnet Style | Bolted Bonnet (BB), Welded Bonnet (WB), Extended Cryogenic Bonnet |
| Trim Options | API Trim #1, #5 (Stellite Gr. 6), #8 (Hardfaced 13Cr), #12 (Monel), #16 (316+Stellite) |
| Wedge Construction | Solid Forged Wedge / Flexible Wedge with precision ground sealing faces |
| Gland Packing | Flexible Graphite with Inconel Wire Reinforcement and Anti-Corrosion Inhibitor |
| Testing Standards | API 598, BS EN 12266-1 (Hydrostatic Shell, Seat & Air Backseat Tested) |
Forged Gate Valve Configurations
| Type & Model | Key Features & Operating Applications |
|---|---|
| Class 800# Bolted Bonnet Gate Valves | Standard plant utility valve with spiral-wound SS 316/graphite gasketed joint for easy maintenance. |
| Welded Bonnet Forged Gate Valves | Hermetically seal-welded body-bonnet joint preventing any fugitive emissions under extreme vibration. |
| Socket Weld & Screwed End Valves | Compact forged bodies for rapid installation into small-bore high-pressure piping circuits. |
| High-Pressure Class 1500# & 2500# Valves | Heavy wall forged construction rated for supercritical steam boiler loops and catalyst injection lines. |