scope:

Description

This standard applies only to those devices classified as water hammer arresters having a permanently sealed cushion of gas isolated from the water way, and designed to provide continuous protection, without maintenance, against detrimental surge pressures within the water distribution system.

Arrester Size Range

The size of the device shall be within the range from Arrester Size AA which are used for "point of use" residential appliance applications to Arrester Sizes A through F which are used in applications as defined within Table 1 of this standard.

Pressure Range

These devices shall be designed to withstand a maximum pressure of at least 150.0 psi (1034 kPa). These devices shall operate at pressures from 0 psi (0 kPa) to 60.0 psi (413.7 kPa).

Temperature Range

These devices shall be capable of performing at temperatures from 33.0 °F (0.6 °C) to 180.0 °F (82.2 °C).

Connections

Pipe threads and other connections shall conform to the applicable standards.

• Bolts Screws and Nuts shall comply with ASME B1.1.

• Tapered pipe threads shall comply with ASME B1.20.1.

• Dry seal pipe threads shall comply with ASME B1.20.3.

• Compression assemblies shall comply with SAE J 512.

• Soldered connections shall comply with ASME B16.18 or ASME B16.22.

• Push fit connections shall comply with ASSE 1061.

• Press connections shall comply with ASME B16.51.

• PEX Crimp connections shall comply with ASTM F1807.

• PEX Expansion connections shall comply with ASTM F1960.

• CPVC connections shall comply with ASTM D2846.