Watts CSM-91 2 1/2 - Part of the CSM-91 Series Egress System then keep the top lifting

then keep the top lifting straps out of the way while you place the grate into the drop inlet protection filter making sure to keep the grate below the top straps and above the bottom straps

It consists of a bronze body construction with NPT threaded female inlet and threaded female outlet (drain) connection

Also contains guide busing and o-ring

Specifications Kit Type First Check Kit Lead Free YES Product Group BACKFLOW KITS UPC - 098268699463

the nylon channel drain grate

Watts CSM-91 2 1/2 - Part of the CSM-91 Series Egress System then keep the top liftingThis 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