Parameters / Specifications Model: 67DFR‑2343‑3134970 Type: Filtered regulator with internal relief Series: Fisher 67D Series Pressure Reducing Regulators Body Material: Aluminum (standard for 67D/67DFR) Connection Size: ½″ NPT (inlet/outlet) typical for series Maximum Inlet Pressure (Body Rating): 250 psig (≈17.2 bar) for filtered models Outlet (Regulated) Pressure Ranges: Typical ranges in the series include 0‑20 psig (0‑1.4 bar), 0‑35 psig (0‑2.4 bar), 0‑60 psig (0‑4.1 bar), and 0‑125 psig (0‑8.6 bar) Maximum Emergency Outlet Pressure (relief set): ~50 psig (≈3.4 bar) above the outlet set pressure (for types with internal relief) Temperature Capability (depends on elastomer/diaphragm): Nitrile (NBR): approx –40 °F to +180 °F (≈ –40 °C to +82 °C) Fluoroelastomer (FKM): approx 0 °F to +300 °F (≈ –18 °C to +149 °C) Silicone (VMQ) with low‑temp bolting: approx –60 °F to +180 °F (≈ –51 °C to +82 °C) Media: Air or compatible gases (with appropriate material compatibility) Typical Applications: Instrument air supply regulators, pneumatic controllers, panel‑mounted regulators, any system requiring clean downstream air plus over‐pressure relief Approximate Weight: For the filtered + relief ½″ NPT aluminum version: ~2.0 lb (≈0.9 kg)