Specifications - Lord and Son Construction, Inc.

Threaded Ends
Backwater Valves
ASME A112.14.1
Vacuum Relief Valves CSA/AM Z21.22
Water Pressure Reducing Valves ASSE 1003
Water Heater Drain Valves ASSE 1005
Trap Seal Primer Valves ASSE 1018
Temperature and Pressure Relief Valves CSA/AM Z21.22
for Hot Water Supply Systems
Temperature and Pressure Relief Valves
for Automatically Fired Hot
Water Boilers
ASME CSD-1
Safety Code No., Part CW,
Article 5
2.3.1 Wall Faucets
Wall faucets with vacuum-breaker backflow preventer shall be brass with 3/4
inch male inlet threads, hexagon shoulder, and 3/4 inch hose connection.
Faucet handle shall be securely attached to stem.
2.3.2 Relief Valves
Water heaters and hot water storage tanks shall have a combination pressure
and temperature (P&T) relief valve. The pressure relief element of a P&T
relief valve shall have adequate capacity to prevent excessive pressure
buildup in the system when the system is operating at the maximum rate of
heat input. The temperature element of a P&T relief valve shall have a
relieving capacity which is at least equal to the total input of the heaters
when operating at their maximum capacity. Relief valves shall be rated
according to CSA/AM Z21.22. Relief valves for systems where the maximum
rate of heat input is less than 200,000 Btuh shall have 3/4 inch minimum
inlets, and 3/4 inch outlets. Relief valves for systems where the maximum
rate of heat input is greater than 200,000 Btuh shall have 1 inch minimum
inlets, and 1 inch outlets. The discharge pipe from the relief valve shall
be the size of the valve outlet.
2.3.3 Thermostatic Mixing Valves
Provide thermostatic mixing valve for lavatory faucets. Mixing valves,
thermostatic type, pressure-balanced or combination thermostatic and
pressure-balanced shall be line size and shall be constructed with rough or
finish bodies either with or without plating. Each valve shall be
constructed to control the mixing of hot and cold water and to deliver water
at a desired temperature regardless of pressure or input temperature
changes. The control element shall be of an approved type. The body shall
be of heavy cast bronze, and interior parts shall be brass, bronze,
corrosion-resisting steel or copper. The valve shall be equipped with
necessary stops, check valves, unions, and sediment strainers on the inlets.
Mixing valves shall maintain water temperature within 5 degrees F of any
setting.
Section 22 00 00 Page 19