ES-150A For Residential Applications Job Name –––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––– Job Location –––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––– Engineer –––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––– Series 150A Water Hammer Arrestors Sizes: 1/2" and 3/4" (15 and 20mm) For residential/domestic water system applications, only. What is Water Hammer? The noise from banging pipes is caused by shocks of high speed water flowing in the pipe when a fixture is suddenly closed. Sudden stoppage causes a “bounceback” of the water and is called water hammer. It might be compared to driving your car at slow speed into a wall where the effect is negligible. However, if you drove the car at a much higher speed, the impact would be greater, and consequently, so would the bounceback or shock. Dishwashers, clothes washers, quick-closing faucets all contribute to creating water hammer which is not only annoying but damaging to pipes and appliances. The simple, economical solution is Watts Series 150A designed with a pre-charged air chamber and a rugged sealed-in diaphragm which flexes to absorb the shock. It can be installed vertically, horizontally or at any angle. Model 150A Features • Pre-charged air chamber Model 150A-HA • Sealed in diaphragm • Complete stainless steel chamber construction • Rechargeable Pressure — Temperature For residential/domestic water systems only. Not for commercial applications. Maximum working pressure: 150 psi (10.3 bar) Maximum temperature: 180°F (82°C) Maximum velocity: 10 ft/sec. (305 cm/sec.) Maximum shock pressure: 200 psi (13.8) 10 cu. inch (164 cu. cm) total volume. Weight: 12 oz. (9.6 gm) MODEL NO. ORDERING CODE SIZE WATER HAMMER ARRESTOR (only) 150A /" 0269503 1 2 FITTING only for / " SHOCK ARRESTOR for WASHING MACHINES with / " hose thread connection 1 2 150-HA 3 4 0269505 / " HT 3 4 WATER HAMMER ARRESTOR and FITTING with 3/4" hose thread connection for washing machines 150A-HA Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold. 0269508 / " HT 3 4

Standard tire valve under cap, for easy charging Durable coated stainless steel top has large capacity for greater shock Pre-charged air chamber separated from water system Moulded diaphragm with thick rubber bead for long-lasting adapter for easy installation Clothes Washers Quick-Closing Faucets Dimensions - Weights Fast-Fill Toilets Chart based on 10 foot/sec. (3.05 meter/sec) velocity and 150 psi (10.55 bar) shock pressure. Note: Metric equivalents shown are for comparison reference only. A Watts Water Technologies Company