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Features and benefits
1) NO TORSION OF BELLOWS: Splined stem prevents torsion of bellowsand
assures long cycle life.
2) LONG CYCLE LIFE BELLOWS (5000 cycles): Designed for, and successfully
tested in, high pressure¨Ctemperature conditions.
3) LOW TORQUE due to: a) Non-rotating stem; b) Stem nut thrust bearings;
c) Central grease fitting for lubrication of stem nut.
4) TWO SECONDARY STEM SEALS: a) Backseat; b) Stem packing.
5) VALVES ARE FIRE SAFE: Operate normally during and after fire
test.
6) EASY IN-LINE SERVICING: Stem-bellows assembly can easily be removed
and replaced on valves with threaded (O-ring seal) bonnet. On seal
welded valves, removal and replacement of weld is necessary. Special
power operated tools are available for cuttingt he seal weld.
Size range(s)
1/2 - 2'' (15 - 50 mm)
Pressure rating
ASME Class 1500 - 2500
Standard connections
Threaded, Socket weld, Butt weld
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