Armstrong Fluid Technology 571110LF-360 Valve

Valve, Circuit Balancing, 1/2" NPT, Brass Body with EPDM Elastomers, 0.26-1.98 gpm Flow Rate Range, Circuit Balancing Low Flow Valve with PT Ports rated at 300 psi maximum working pressure and -4 to 300 degree F operating temperature (Model CBV050VTCR-LF)