BS1873 CastSteel Globe Valve is one kind of important Oil andGas Industry Valves. The BS1873 cast steel globe valve’s trim is morethan just a closure element (because a throttling valve does more than justopen or close), but rather it is a regulating element that allows the valve tovary the flow rate against the position of the valve according to the flowcharacteristic, which may be equal percentage, linear, or quick-open.Typically, this trim consists two key parts: the plug, which is the femaleportion of the regulating element, and the seat ring, which is the femaleportion. The portion of the plug that sets into the seat ring is called theplug head, and the portion that extends up through the top of the globe valveis called the plug stem.
Theflow direction of BS1873 Cast Steel Globe valve is defined by themanufacturer or the application, although in most manual applications, flowdirection is almost always under the plug. Seating the plug against the flowprovides constant resistance but not enough to be insurmountable. Withunder-the-plug flow, the valve is relatively easy to close as long as the fluidpressure and flow rate are low to moderate. In addition, under-the-plug flowprovides easy opening by the flow pushing against the bottom of the plug.
Theglobe valve is mainly for regulating function as well as on-off. The BS1873cast steel globe valve can be amended design to be Globe Check Valve which has non return valve function.
BasicDesign: BS1873, ASME B16.34
Faceto Face: ASME B16.10, BS2080, EN558, ISO5752
Flange Ends: ASME B16.5, ASME B16.47, EN1092
BWEnds: ASME B16.25
PressureTest: API 598, EN12266-1, BS6755
OS& Y, Rising Stem
BoltedBonnet or Pressure Seal Bonnet
ConicDisc, Plug Disc, Regulating Plug
FlangeEnds or BW Ends
StraightPattern or Y Type
Size Range: 2"to 24" (DN50 to DN600)
Pressure Class: Class 150to Class 2500 (PN16 to PN420)
Body:WCB, LCB, LCC, WC1, WC6, C5, CF8, CF8M, CF3, CF3M, CF8C, 4A, 5A
Stem:F6a, F304, F316, F304L, F316L, F321, F51
Trim:Trim 1, Trim 2, Trim 8, Trim 5, HF HFS, API 600 2009 Table 8
Painting:Anti-Rust Epoxy, Silver Grey RAL9006
Handwheel,Impact Handwheel, Gear, Electric Actuator
SpecialClass, Globe Check Valve
NACEMR 01-75, Lock Device