Parameters / Specifications Model: 67CFR-235 Series: Fisher 67C Series (Instrument Supply Regulators) Construction: Filtered regulator with internal relief (i.e., integral filter and soft-seat internal relief valve) Body material: Aluminum (standard for 67C series non-CS version) End connections: ¼ inch NPT (inlet & outlet) Maximum inlet (body rating) pressure: 250 psig (≈17.2 bar) for standard models. Maximum emergency outlet pressure (i.e., the relief valve will relieve when downstream exceeds setpoint by this margin): 50 psig (≈3.4 bar) above the outlet setting. Typical outlet (regulated) pressure spring range for the “235” variant: likely 0–35 psig (≈0–2.4 bar) (many order-codes in the 200-series use 0-35 psig) Filter: Integral, standard rating about 5 microns for polyethylene filter element Temperature capability (depending on elastomer / diaphragm / filter media): Nitrile (NBR): –40 °F to +180 °F (≈ –40 °C to +82 °C) Fluoroelastomer (FKM): 0 °F to +300 °F (≈ –18 °C to +149 °C) Silicone (VMQ diaphragm + low-temp bolting): –60 °F to +180 °F (≈ –51 °C to +82 °C) Media: Air or compatible gases (must confirm elastomer/filter compatibility for specific gas) Typical weight (for ¼ in NPT aluminum body version): about ~1 lb (≈0.5 kg) Typical applications: Instrument air supply regulators for pneumatic controllers, actuators, panel mount regulators, air chucks, spray guns, etc.
