Direct answer · Updated August 2026
What is a gunmetal gate valve Class-2?
Gunmetal gate valve Class-2 per IS 778 is hydrostatically tested to 24 kg/cm2 on the body and 16 kg/cm2 on the seat — for higher-pressure water, fire, and air lines versus Class-1 (15/10 kg/cm2). Supreme Valves India manufactures ISI marked Class-2 gunmetal gate valves 15–100 mm with BSP ends from Ahmedabad.
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Gunmetal Gate Valve Class-2 Manufacturer India
ISI · IS:778 Class-2 · Body 24 kg/cm2 · Seat 16 kg/cm2
ISI marked gunmetal gate valve Class-2 for higher-pressure water, fire mains, and compressed air service. Gunmetal IS 318 LTB-2 body and wedge, high tensile brass stem, BSP screwed female ends, 15 mm to 100 mm. Tested to body 24 kg/cm2 and seat 16 kg/cm2 per IS 778 Class-2 requirements.
Class-2 Test Pressures
| Design standard | IS 778 (ISI marked) |
| Pressure class | Class-2 |
| Body hydrostatic test | 2.4 MPa (24 kg/cm2) |
| Seat / back seat test | 1.6 MPa (16 kg/cm2) |
| Body & wedge | Gunmetal IS 318 LTB-2 |
| Ends | Screwed female BSP |
| Size range | 15 mm to 100 mm |
For normal-pressure service see Class-1 gunmetal gate valve.
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Frequently Asked Questions
What is the working pressure for Class-2 gunmetal gate valves?
Class-2 valves are tested to 24 kg/cm2 body and 16 kg/cm2 seat. Actual working pressure depends on size and service — confirm with your line design and specify on RFQ.
Is Class-2 more expensive than Class-1?
Class-2 valves are typically priced higher due to heavier sections and higher test requirements. Send size and quantity for firm pricing.
Do you supply both Class-1 and Class-2 on one PO?
Yes. Mixed Class-1 and Class-2 gunmetal valves can be supplied on a single purchase order with separate test certificates.