GALA Water Hammer Arrestor (Figure GWH-01) is a hydro-pneumatic shock-absorbing device manufactured by Gala RS INC..
It is engineered to control damaging hydraulic shock waves (surges) caused by the sudden closure of fast-acting valves in domestic, commercial, and HVAC water networks
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Core Technical Profile
Official GALA general catalog data specifies the standard operational boundaries for the GWH-01 series
Model Designation: Figure GWH-01.
Chamber Cylinder Material: Seamless Type L Copper Tube body providing maximum structural integrity.
Maximum Working Pressure: Rated securely at 10.6 Bar (approx. 154 PSI).
Size Availabilities: Available globally from sizes DN15 to DN25 (1/2" up to 1").
Connection Threading: Standard BSPT 1/2" male thread fitting on the base unit (composed of C46500 Lead-Free Brass).
Structural Composition & Engineering
Traditional air-chamber standpipes fail over time because air naturally dissolves back into the water.
The GWH-01 eliminates this point of failure using a piston design
Hermetic Air Chamber: The device houses a factory pre-charged, permanently sealed air chamber that cushions incoming water spikes without losing gas pocket volume over time.
Piston Mechanism: A heavy-duty Nylon piston separates the pre-charged chamber from the main waterline, riding on dual EPDM O-rings to maintain a permanent leakproof barrier.
Internal Lubrication: Factory-packed with NSF-approved silicone compound grease to optimize smooth piston travel and maximize O-ring service lifespan
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