Parameters / Specifications Model: Fisher 67CFR‑225 (and implied option suffix “/C4”) Series: Fisher 67C Series Instrument Supply Regulators Construction / Type: Filtered regulator with internal relief (integral filter + internal relief) Body Material: Aluminum alloy (standard for 67C/67CF/67CFR) Connections / Body Size: ¼ inch NPT (inlet and outlet) Maximum Inlet Pressure (Body Rating): 250 psig (≈ 17.2 bar) Outlet (Regulated) Pressure Range (spring range for “‑225”): 0–60 psig (≈ 0–4.1 bar) Maximum Emergency Outlet Pressure (i.e., the built‑in relief will relieve when outlet exceeds setpoint by this margin): 50 psig (≈3.4 bar) above outlet setting Filter: Integral 5‑micron polyethylene (standard) filter included Temperature Capability (depending on elastomer / filter material): NBR (nitrile) elastomers: approx –40 °F to +180 °F (≈ –40 °C to +82 °C) FKM (fluoroelastomer) elastomers: approx 0 °F to +300 °F (≈ –18 °C to +149 °C) VMQ (silicone) diaphragm with low‑temperature bolting: approx –60 °F to +180 °F (≈ –51 °C to +82 °C) Approximate Weight: ~1 lb (≈0.5 kg) Media / Typical Use: Air or compatible clean gases, for pneumatic instrumentation, controllers, panel‑mounted systems, regulators supplying instrument air.
