These Sferaco knife gate valves have a cast iron body with 304 stainless steel blade (gate) and are available with NBR, EPDM or Metal Seats. With a rising non rotating stem, non rising handwheel, Unidirectional tightness ( Respect the flow direction indicated by the arrow). These valve are suitable for mounting between flanges PN10. Full crossing threaded lower holes and blind threaded top holes.
Available options include:With lever or chain handwheel, limit switches, Deflector cone.
The body coating is 50% epoxy 50% polyester painting blue colour RAL 5005, we can offer other seats on request ( FKM, PTFE, SILICONE …)
Metal seated valve have 1% loss factor (not bubble tight)
These valves are normally a 2 working week lead time, although we can express ship if required.
Maximum Working Pressures
The maximum working pressure for these valves is dependant on size, see below:
2" (DN50) to 8" (DN200) are 10 bar
10" (DN250) is 8 bar
12" (DN300) is 6 bar
14" (DN350) and 16" (DN400) are 4 bar
18" (DN450) to 24" (DN600) are 3 bar
28" (DN700) and 32" (DN800) are 2 bar
The working Temperature for these valve are as follows (According to seat material)
NBR: -10°C to +90°C
EPDM: -10°C to +110°C
Metal: -10°C to +90°C
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