Rain Bird - PRSDIAL - PRS - Dial Pressure Regulator Swing Check Valve A correctly installed cap covers

A correctly installed cap covers the open casing

Rain Bird PGA Globe and Angle Valve with Flow Control

and the faucet's scale relative to the sink

and stainless steel are separate variants

Rinnai 223181 Specs:

Rain Bird - PRSDIAL - PRS - Dial Pressure Regulator Swing Check Valve A correctly installed cap coversThe PRS Dial is an excellent means of regulating outlet pressure at the valve regardless of incoming pressure fluctuations. The visible scale makes adjustment quick and easy. The regulator fits all Rain Bird PGA, PEB, PESB, PESB R, GB R, EFB CP R, BPE and BPES series valves Features Include: Improved spike reduction capabilities reduce water hammer. Valve pressure regulator Ergonomic design with snap tight cover to prevent vandalism. Waterproof dial