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Spire Industrial Equipments Co. globe valves are heavy duty, outside screw & yoke type, bolted bonnet, rising stem and hand wheel. Valves are highly efficient for services requiring frequent operation and throttling. The internal passage within the valve diverts flow through 90° changes of direction resulting in pressure drop and turbulence. The most advanced design features provides the ultimate in dependable, economic flow control. They are available in wide range of sizes and weights. Globe valves are generally considered where moderate control or regulation of flow is required.
Body : Body is cast with integral flanges meeting operating conditions with reinforcement to reduce stress. Flanged end and Butt weld end are available with ASME specifications.
Bonnet : Bonnet is as cast with integral yoke for better alignment and fewer parts. All bonnets are precision machines with exacting tolerance as the body for exact alignment of the stem and disc center.
Seat Ring : Renewable seat is hard faced and machined to minimize wear. The seat ring is seal welded to the body. Integral Seat is provided for Austenitic Stainless steel valves. High Quality deposits of Stellite 6 & other hard facing alloys are assured by use of controlled preheating and automatic plasma arc facing and controlled cooling process.
Disc : Disc is Ground and lapped to mirror finish. Differential hardness difference of 50 BHN is maintained between disc and seat.
Stem : Rotating stem with precision ACME threads are machined and burnished to mirror finish to 0.8 microns for low torque. Stem has long engagement with stem nut for accurate sealing.
Disc Nut : Disc nut secures stem to the disc. It permits the disc to rotate about the stem axis and aid in tight sealing for trouble free service compensating for disc wear.
Thrust Washer : Hard Thrust washer prevents galling.
Stem Nut : Precision machined stem nut engage the stem for accurate control of Disc position.
Gland : Two piece gland for ease of alignment and exerts even pressure on the packing without binding the stem.
Body Stud Nut
Packing : Die Molded Grafoil rings with top and bottom braided rings provides ultimate sealing for wide range of service. Assures long packing life and avoids pitting on stem.
Back Seat bush : Precision Machined bush helps for replacement of packing at open position.
Gasket : Spiral wound metallic gasket with Grafoil enclosed in tongue and groove arrangement.
Eye Bolt & nut : Swing type eye bolt for ease in replacement of packing.
Solid Groove pin
Hand Wheel : Hand wheel are standard up to 10". Gear operator can also be given on request.
Hand Wheel Nut
Globe Valves are adequate for all service media. Valves are marked with flow direction since they are recommended to install with flow and pressure under the disc. It can also be installed in reverse condition depending upon the conditions. The Globe Valve is generally faster to operate due to less travel. But requires much force to operate compared to Gate Valves.
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