Product specification
Forged Steel Small-Bore Valves
1/2" to 2" forged gate, globe and lift check valves to API 602 and BS 5352, Class 800 to 2500.
Overview
Small-bore valves carry a disproportionate share of plant leak paths. Our forged range is machined from solid drop-forged blanks, with integral bonnet options and IBR certification available for boiler and steam service.
Design features
- Bolted bonnet and welded bonnet variants
- Stellited seat and disc for steam and erosive duty
- IBR-approved builds available for Indian boiler applications
- Integral hard-faced back seat
- Graphite packing with anti-extrusion rings
- Full material traceability to melt and heat number
Size & pressure class range
| Size range | Pressure class |
|---|---|
| 1/2" – 2" | Class 800 |
| 1/2" – 1 1/2" | Class 1500 |
| 1/2" – 1" | Class 2500 |
Sizes and classes outside this table are reviewed on enquiry against available patterns and forging stock.
Design standards
- API 602
- BS 5352
- ASME B16.34
- ASME B16.11
- IBR
Body & trim materials
- Forged carbon steel: A105, A105N, LF2
- Forged alloy steel: F5, F9, F11, F22
- Forged stainless steel: F304, F304L, F316, F316L, F321, F321H
End connections
- Socket-welded
- Screwed NPT
- Butt-welded
- Flanged
Testing
- Hydrostatic shell & seat
- Air seat test
- MSS SP-61 / BS 6755 / API 598
Temperature range
-46 °C to +550 °C depending on grade
Typical applications
Where this valve family usually lands.
Steam & Boiler Systems
Instrumentation Lines
Refineries
Pharmaceuticals
Also manufactured
Related valve families.
Next step
Need forged small-bore against a specific datasheet?
Share the size, class, metallurgy, end connection and test requirement. We will confirm feasibility and lead time.