Pressure reducing valve with replaceable cartridge. Male union connections. | Caleffi S.p.a.
Caleffi 535351HA 535H Series Reducing Valve ASSE 1003, Female 3/4" NPT with Pressure Gauge - Amazon.com
Sizing Pressure Reduction Valves From Caleffi | H2X Engineering
Caleffi 533118 CST combined PRV and cold fill monobloc manifold assembly 3/8 bar - Unvented Components Europe, Unvented Cylinder System Spares, Spares for Hot Water Systems, Plumbing & Heating Parts - Specialists