The Model BQ is a relief regulator suitable as a back pressure regulator or bypass valve for controlling inlet pressures between 5 and 300 psig (0.34 to 20.7 Barg). This model is designed for controlling a wide range of fluids, including air, inert gases, cryogenic gas or liquids, chemicals, water, fuel oil, and steam.
| Options | Closing Cap, Cryogenic Construction, Differential Construction |
| Body Size | ¼”, ⅜”, ½” |
| Pressure drop | Up to 400 psid, (27 bard) |
| Materials | Body: BRZ, DI, CS, SST Spring Chamber: BRZ, DI, SST Trim: BR, 316 SST Seat: Metal-BR (ANSI/FCI 70-3 CL.IV), SST-Composition-Buna-N (ANSI/FCI 70-3 CL.VI) Diaphragm: Phos, BRZ, 302 SST, Neoprene, EPDM, Elgiloy |
| Set Pressures | Spring setting from 5 psig to 300 psig |
| Temperature Range | -325°F to +600°F (-198°C to +315°C) |
| End-Connections | NPT |
