Cast stainless steel wedge gate valve with female threaded ends and screwed bonnet, for isolation duty on corrosive, washdown and general service lines. Cast grade, pressure designation and thread form are stated at order.
Prices on request. Contact us for availability and quotations.
A stainless steel gate valve does the same job as the brass pattern - full-bore isolation with low pressure loss - where the fluid, the washdown regime or the ambient conditions rule out copper alloy. The wedge and seats are in the same material family as the body, so there is no galvanic pair inside the valve.
Steel gate valves, stainless included, are covered by EN 1984. It covers cast, wrought and fabricated bodies with flanged, butt welding, socket welding or threaded ends, and it limits socket weld and threaded end valves to DN 8 to DN 65 at PN 10 to PN 100 or Class 600 and Class 800. The pressure a valve may hold at temperature is not a single figure: for Class designated valves it comes from the tables of ASME B16.34 for the applicable material group, which is why the cast grade has to be part of the order.
State at order: nominal size, pressure designation, cast grade, thread form, and whether a rising or non-rising stem is required. As with any threaded valve, BSPP, BSPT and NPT are three different thread forms and will not seal against one another.
| Valve Type | Wedge gate valve, handwheel operated, screwed bonnet, cast body |
|---|---|
| Body Material | Stainless steel; the cast grade (for example ASTM A351 CF8 or CF8M) must be stated at order |
| Product Standard | EN 1984 - Industrial valves - Steel gate valves; covers cast, wrought and fabricated bodies with flanged, butt welding, socket welding or threaded ends |
| Size Range, Threaded Ends | EN 1984 limits threaded and socket weld end steel gate valves to DN 8 - DN 65 |
| Pressure Designation | Threaded and socket weld end valves in EN 1984 are designated PN 10 to PN 100, or Class 600 and Class 800. The standard notes that PN 10, PN 16, PN 25 and PN 40 are not normally manufactured in these end types, Class 800 being the designation in common use; state the designation at order |
| Pressure - Temperature Basis | Not a single figure: for Class designated steel valves the rating comes from the ASME B16.34 tables for the applicable material group and class |
| End Connections | Female threaded. Thread form to be stated: BSPP parallel (ISO 228-1), BSPT taper (ISO 7-1) or NPT (ASME B1.20.1) |
