Catalog excerpts


Forged Steel Gate Valve Globe Valve, BB, CS Structural formation Major parts material form Design KOSACast steel globe valve are designed and manufactured to provide maximum service life and dependability. All globe valves are full ported and meet the design requirements of American petroleum institute standard BS 1873, BS EN 1 3709 and generally conform to American Society of mechanical engineers standard ASME B16.34. Valves are available in a complete range of body. Bonnet materials and trims. Rang of Materials Standard body/bonnet materials include nine grades of carbon, low alloy and stainless steels. For special applications they can be supplied in other grades of alloy and stainless steel. There's a full rangeof trim materials to match any service. Optional packing and gasket materials are available for a full range of service conditions. Available Modifications for Cast Steel Valve No. Trim changes End connection modifications Packing and gasket changes Operator mounting Handwheel extensions Pressure equlizing By-pass Customer specified coatings Weld end bore changes Oxygen & chlorine cleaning & packaging (DOperting Large handwheel for easy operation. Also available with gearing, motor actuators, pneumatic or hydraulic actuators for more difficult services. (DOS & Y Outside screw and yoke. Cast steel globe valve yoke integral with bonnet for 10 & and smaller. (3)End connections A choice of flange, RTJ flanged or butt welding end for piping flexibility. ©Lantern ring and double packing set Lantern ring with leak-off fitting connection and double packing stack is optionally available for critical services. Main size of outside & weight Model: (Hs« PsJZIIH* (Hs. PsJZIIY* (Hs* Ps)Z41H« (Hs* Ps)Z41Y* (Hs* Ps)Z61H. (Hs* Ps)Z61Y Notes: H represents the height in full opening condition of valve. ©Disc Plug disc is stem guided on all sizes. Disc has a differential angle front the seat to provide a line contact for maximum sealing. The bottom of V-portdisc isfuided by the body seat ring for maximum disc stability in throtting applications. The soft TEFL ON ring is excellent for lower temperature service wheel tightshut off is required. ©Live load packing In services requiring frequent cycling or with high pressure^ temperature variations, live loading extends the service life between maintenance periods by requiring less frequent packing gland adjustments. Belleville springs are employed to provide con stant packing gland stress. ©BB Bolted bonnet. Welding bonnet and pressure seal bonnet in services requiring frequent cycling or with high pressure/temperature variations. ©Yokesleeve Furnished in aluminum bronze to reduce operating torque. Most sizes furnished with ball bearing yoke sleeves. (9) Body-to-bonnet joint A Male and Female joint or tongue and groove joint is used 150Lb to 600Lb valves. Ring joint is used in the body to bonnet connection in 900Lb & higher rated valves. ©Seat rings Separate heavy duty, full ported rings for easy maintenance. Screwed or welded connection into body.

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