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Watts Series 05 Mini Water Hammer Arrestor 1/2" NPT
Factory-charged hydraulic shock absorber for residential and light commercial plumbing systems
Piston-Based Hydraulic Shock Absorption
Eliminates Water Hammer
Piston and seal design absorbs hydraulic shockwaves from quick-closing valves, preventing the characteristic banging noise in pipes
Factory Air Charged
Pre-charged air chamber ready for immediate installation in new or retrofit applications without field preparation
Universal Mounting
Installs with standard pipe tee in any orientation, ideal for concealed locations behind appliances or in walls
Appliance Protection
Reduces stress on washing machines, dishwashers, and quick-closing faucets by dampening pressure spikes
Watts 05-1/2 Technical Details
| Model Number | Watts 05-1/2 (05-1-2) |
| Connection Type | 1/2" NPT Male |
| Maximum Working Pressure | 150 PSI (10.3 bar) |
| Air Charge | Factory Pre-Charged (Non-Rechargeable) |
| Application | Residential and Light Commercial |
| Installation Orientation | Any Angle with Standard Tee |
Recommended Installation Points
The Watts Series 05 mini arrestor is designed for installation near quick-closing appliances and fixtures in residential and light commercial settings. Install as close as possible to dishwashers, clothes washers, ice makers, toilet fill valves, solenoid-operated faucets, and any appliance with electromagnetic or spring-loaded shut-off valves. Compatible with copper, CPVC, and PEX plumbing systems using appropriate 1/2" NPT adapters. Suitable for concealed locations within walls, under sinks, or behind appliances where space is limited.
Stops Pipe Hammering
Immediate relief from banging pipes and hydraulic shock noise
Protects Infrastructure
Extends life of pipes, fittings, and appliances by reducing stress
Compact Design
Fits in tight spaces with any-angle installation flexibility
Maintenance-Free
Factory sealed unit requires no recharging or servicing
