Powell Valves has been manufacturing the highest quality industrial valves since 1846. Powell offers bellow-seal valves in ASME classes 150, 300 and 800 in a variety of materials.
Bellow-Seal Valve Features
Each valve is tested per API 598
Every bellow assembly is helium leak-tested to assure zero leakage.
Non-rotating stems prevent torsion of bellow.
Secondary stem seals include:
Stem backseat
API 624 stem packing
Lubricant fittings to ensure proper lubrication of stem bushing for efficient opening and closing.
Multiple bellows materials are available: 316Ti, Hastelloy, Inconel, Monel, etc.
All bellows are hydroformed with a minimum of two layers.
Available in pressure classes 150-1500 (All body materials available)