Kalpataru Piping Solution supplies gate valves for full-bore on/off isolation, where a flat gate lifts clear of the flow so an open valve adds almost no pressure drop. We supply them in two constructions: forged gate valves for small-bore high-pressure lines and cast steel gate valves for larger sizes, in stainless, carbon, alloy and nickel grades. These are part of our full Valves range and every valve is pressure tested before dispatch.
A gate valve is an isolation valve, meant to be fully open or fully closed, not to throttle, which is what keeps its pressure drop low and its seat life long. For regulating flow, a globe valves is the right pattern instead. The construction and grade follow the size, pressure class and service of the line.
Forged vs Cast Gate Valves
Construction follows size and pressure.
| Construction | Best for | Typical size |
|---|---|---|
| Forged gate valves | Small-bore, high-pressure lines; the forged body carries the rating compactly | Up to around 2 inches |
| Cast gate valves | Larger sizes where a cast body is economical and practical | 2 inches and above |
We hold forged gate valves and cast steel gate valves across the class range; tell us the size and pressure class and the right construction follows.
Gate Valve Grades & Ratings
Gate vs Globe: When to Use Which
The two are often confused but do opposite jobs. A gate valve isolates: fully open it gives a straight, full-bore path with minimal pressure drop, but it is not designed to control flow and should not be left part-open. A globe valves regulates: its seat controls flow well but adds pressure drop. Use a gate valve to isolate a line and a globe valve to throttle it, and where non-return is needed a check valve does that automatically.