Watts CSM-91 2 1/2 - Part of the CSM-91 Series Egress System ZB400C-4NL

ZB400C-4NL

Also contains guide busing and o-ring

957RPDA Compatible Size Used On 8 IN Kit Contents Check Module O-ring

the nylon channel drain grate

The pressure setting is 65 psi (4

Watts CSM-91 2 1/2 - Part of the CSM-91 Series Egress System ZB400C-4NLThis 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