Watts CSM-91 2 1/2 - Part of the CSM-91 Series ZA100F-4NH Check with local inspection authorities

Check with local inspection authorities for installation requirements

8 bar) at 150 degree F (66 C) WOG

and steel handle

Available with dome or flat strainer to prevent debris entry

Z161-3NL-OB

Watts CSM-91 2 1/2 - Part of the CSM-91 Series ZA100F-4NH Check with local inspection authoritiesThis 2 1 2 inch flow measurement valve monitors system flow in medium to high flow rate HVAC units, providing a highly accurate flow measurement. It consists of ductile iron body construction, pressure differential readout ports on both sides of the valve, two interchangeable brass metering ports and drain ports on both sides of the valve, two check valves with gasketed caps, bronze valve stem and plug disc, multi turn adjustment handwheel, tamper