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Scorpio cast steel valves are designed and manufactured to provide maximum service life and dependability. All gate valves are full ported and meet the design requirements of American Petroleum Institute standard API600 & API 6D. British standard BS1414 BS EN 1984 and generally, Conform to American Society of Mechanical Engineers standard ASME B1634. Valves are available in a complete range of body/bonnet materials and trims.
Large hand wheels for easy operation. Also available with gearing motor actuators, pneumatic or hydraulic actuators for more difficult services.
In services requiring frequent cycling or with high pressure/temperature variations, live loading extends the service life between maintenance periods by requiring less stments. BelieviU.e springs are employed to provide constant packing gland stress
Integral guide rib faces assure self-centering of wedge. flexible wedge gate valve has a one piece. twin-disc wedge, which is designed so that each half flexes independently. Available in solid flex split and his designs.
Outside screw and yoke. Cast steel gate valve yoke integral with bonnet for 150 Lb-B" 600 Lb-6" 900 Lb-4" & small Bolted bonnet, Welding bonnet and pressure seal bonnet in services requiring frequent cycling or with high pressure/tempareture variations.
Standard body/bonnet materials include nine grades of carbon, low alloy & stainless steels. For special applications they can be supplied in other grades of alloy & stainless steel. Threre's a full range of trim materials to match any service optional packing & gasket materials are available for a full range of service conditions.
A choice of flanged, RTJ flanged or butt welding end for piping flexibility.
Lantern ring leak-off fitting connection & double packing stack is optionally available for critical services.
Extra long thread engagement between yoke sleeve and stem provide long thread life. Valves of sizes Larger than 150 Lb-12", 300 Lb-10", 600 Lb-6", 900 Lb / 1500 Lb / 4" are regularly provided with roll bearing yokes.
All wedge gate valves are provided with upset forged 1-head stems by forging the T-head. The stem at the stem-wedge connection is strengthened. This design also allows the wedge possibility of a bent stem jamming the wedge.
A flat face gasket joint is used in the 150lb valves. A male and female joint is used in 300Lb to 600Lb valves. Ring joint is 900Lb & higher rated valves.
Source :- http://www.scorpiovalves.com/gate-valve.html
India-based SCORPIO VALVES & CONTROLS is a leading manufacturer of industrial valves. Scorpio Valves & Controls cater to diverse industries such as Oil & Gas, Offshore, Petrochemical, Power, Marine and General Industry. The company operates from its headquarters in Ahmedabad, and has manufacturing facilities in in the city. A DIN EN ISO 9001:2008 certified company, Scorpio Valves is widely recognized for providing a complete line of standard and custom designed solutions for difficult applications.