BQ-1/2"NPT-45-55-BRZ/BRZ/B5/20-75psi, O2-clean
The Model BQ is is primary a general service, self-contained pressure relief / pressure sustaining regulator suitable as a back pressure regulator or bypass valve for controlling inlet pressures between 20-75 Psig (1,38 - 5,17 Barg). For 1/2" (DN15) process piping and 1/2” (DN15) outlet connection.
With a large orifice and diaphragm provide sensitivity with high capacity. The composition seat allows for tight shut-off.
This Model BQ is excellent for both liquids and industrial gases – GOX, GN2, Ar, He, H2, CO2, CNG – as well as natural gas. Also, pressure sustaining applications where the temperature is greater -29 Deg C. Can be used as a utilities air regulator. Also, for use in corrosive and non-corrosive chemical gas and Liquid services are possible depending on material compatibility.
Other options available upon request include Cleaning for Oxygen service, cryogenic construction for LOX, LIN, LH2, LNG ect. and differential/pressure loaded construction.
Four body materials and twenty-one trim material combinations allow compatibility with many liquids and gasses. Atex and PED Certificates upon request.
| Model | BQ |
|---|---|
| Product Name | BQ-1/2"NPT-45-55-BRZ/BRZ/B5/20-75psi, O2-clean |
| Country of Manufacture | United States |
| Description | 1/2"NPT-45-55-BRZ/BRZ/B5 |
| Service | Oxygen |
| Size [DN] | 1/2" (DN15) |
| Spring range | 1,38-5.17 Bar |
| Temperature range [°C] | -29 to +93 |
| Material body | Cast Bronze ASTM B62 C83600 |
| Spring Chamber Material | Cast Bronze ASTM B62 C83600 |
| Seat | Soft Seat |
| Connection | NPTF |
| Operation Method | Spring Operated |
| Trim no | B5 |
| Diaphragm Type | Metal |
| Diaphragm Material | Phosphor Bronze |
| Seat material | PTFE |
| Max pressure | 27.6 Bar |
| Cv [gpm] | 1.81 |
| Kvs [m3/h] | 1.56 |
| Leakage Class | ANSI /FCI 70-2 Class VI |
| Gross Weight [kg] | 0 |
| Net Weight [kg] | 4.0 |
| Package size [mm] | 0 |
| Statistics code | 84811019 |
| Length [mm] | 0 |
| Height [mm] | 0 |
| Width [mm] | 0 |
| O2 Cleaned | Yes |
MODEL BQ REV A
BACK PRESSURE REGULATOR,
OPT-45: PTFE GASKETS;
DN15 INLETS, DN15 OUTLET;
BRONZE BODY WITH BRONZE SPRING CHAMBER;
B5 TRIM: BRASS WITH PTFE SEAT, PHOSPHOR BRONZE DIAPHRAGM;
NPT END CONNECTIONS;
1.38-5.17 BARG (20-75 PSIG) RANGE SPRING;
OPT-55: CLEANED FOR OXYGEN SERVICE PER CASHCO SPECIFICATION S-1135
- Excellent for Liquids, atmospheric and cryogenic industrial gases:
- Nitrogen (GN2), Oxygen (GOX), Argon (Ar), helium (He), Hydrogen (H2), Carbon Dioxide (CO2), also for use with LNG and CNG, Biogas, Propane and LPG systems.
- Corrosive and non-corrosive chemical gas services are possible with broad materials range.
- Economizer Regulator
- Pump Recirculation pressure Relief Valve
- Irrigation mains pressure control
- Compressor Seal Oil
Not all of these applications are suitable for all product variants. Consult with one of our technical specialists to ensure that the selected variant is suitable for your application.
