The G4BZ-HF Marathon Valve can be used with confidence in applications where tight shutoff and emissions containment are priority requirements. Its very design also assures long-lived, high cycle performance.
Main feartures:
Viton1 O-rings
Full pressure containment stem seal.Also protects thrust collar from atmospheric corrosion. Kalrez1 and other elastomers are available. PTFE backup
rings help prevent extrusion of Viton O-rings under pressure.
Integral Thrust Collar/Alloy Diaphragm
Self-sealing, dynamic bellows-like diaphragm moves with plug adjustment to eliminate potential leak path.Hastelloy2 (or optional materials)diaphragm welded to alloy thrust collar.
Unique Stem Sealing Design
A pair of Viton O-rings prevents stem leakage while containing line pressure. Fugitive emission containment is often equal to more expensive severe.
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