Gas Pressure Regulators
A gas pressure regulator maintains a constant downstream pressure regardless of variations in upstream pressure or downstream flow demand. It is a self-operated, spring-loaded device — it requires no external power or control signal. When downstream pressure drops below the set point, the regulator opens further to admit more gas. When downstream pressure rises above the set point, it throttles back. The result is a stable, regulated downstream pressure for instrumentation, control, and process equipment.
What Gas Pressure Regulators Do
Gas pressure regulators serve two functions depending on configuration:
- Pressure reducing regulator — reduces high upstream pressure to a lower, stable downstream pressure. Used to supply instrument air, pilot gas, fuel gas, and process gas at controlled pressure.
- Back pressure / relief regulator — maintains upstream pressure at a set point by opening to relieve excess pressure downstream. Used on separator gas outlets, pipeline systems, and vessel pressure control.
BelGAS manufactures both types across a wide range of pressure ratings — from wellhead to appliance, as they describe it.
Oilfield Applications
- Instrument air supply regulation for pneumatic controls and valve actuators
- Pilot gas supply for gas lift controllers and pneumatic level controllers
- Fuel gas pressure regulation for engines and burners
- Separator gas outlet back pressure control
- Chemical injection pump supply pressure
- SCADA and metering station pressure regulation
- Pipeline distribution pressure control
Product Range — BelGAS
Pressure Reducing Regulators
BelGAS pressure reducing regulators maintain a constant downstream pressure from a higher upstream supply. Available in a wide range of spring pressure ranges, port sizes, and body materials.
Key models relevant to oilfield service:
| Model | Application | Key Feature |
|---|---|---|
| — | — | — |
| P70 / P70 NACE | Instrument air, pilot gas, general purpose | NACE MR0175 compliant version for sour service |
| T627 | Low and high pressure O&G applications | Spring-loaded, direct-operated |
| TR627 | Sour and corrosive service | Internal relief valve for over-pressurisation protection |
| T600 series | Pressure loaded regulator, switching valve | Direct-operated, versatile configurations |
Back Pressure / Relief Regulators
Back pressure regulators maintain upstream pressure at a set point, opening to relieve excess pressure when the upstream pressure rises above the set point.
| Model | Application | Key Feature |
|---|---|---|
| — | — | — |
| T1808 | Separator pressure control, industrial gas distribution | Pilot-operated, gas or liquid service |
| T289 | High-flow relief | Adjustable set point, high flow capacity |
| T98H | Steam, water, process liquid back pressure | Monitors upstream, releases downstream |
High-Pressure Regulators
For wellhead gas and high-pressure supply lines where inlet pressures exceed standard regulator ratings. Contact Proxima with your inlet pressure, outlet pressure, and flow rate for BelGAS high-pressure model selection.
Low-Pressure Regulators
For instrument air panels, control cabinets, and low-pressure pilot gas supply. BelGAS low-pressure regulators provide stable output at sub-bar pressures for sensitive pneumatic instruments.
Key Specifications
| Parameter | Details |
|---|---|
| — | — |
| Inlet pressure range | Low pressure to high pressure — model dependent |
| Outlet pressure range | 0 – 225 PSIG across the range |
| Port sizes | ¼” to 1″ NPT standard |
| Body materials | Aluminium, brass, carbon steel, stainless steel |
| Sour service | P70 NACE, T627 SS — NACE MR0175 compliant |
| Certifications | ISO 9001:2015, AS9100 |
| Lead time | 10-day average from BelGAS factory |
Why Source Through Proxima
Proxima supplies BelGAS regulators with local application engineering support — selecting the correct model, spring range, port size, and body material for your specific gas composition, pressure, and flow conditions. BelGAS products are 100% USA-manufactured with 10-day average lead times — significantly shorter than many European alternatives.
Frequently Asked Questions
Q: What information do I need to specify a gas pressure regulator?
Inlet pressure (maximum and minimum), required outlet pressure, maximum flow rate, gas composition, and ambient temperature range. Specify whether sour service (H₂S) compliance is required. Proxima selects the correct model from this data.
Q: What is NACE MR0175 compliance and when is it required?
NACE MR0175 specifies material requirements for equipment exposed to H₂S in oil and gas production. When H₂S is present in the gas being regulated, NACE-compliant wetted parts are required to prevent sulphide stress cracking. BelGAS P70 NACE and other NACE-compliant models are available from Proxima.
Q: Can BelGAS regulators be used for natural gas fuel supply?
Yes. BelGAS manufactures regulators specifically for natural gas fuel supply to engines and burners. Specify the inlet pressure, required outlet pressure, and maximum flow rate.
Q: What is the difference between a pressure reducing regulator and a back pressure regulator?
A pressure reducing regulator controls downstream pressure — it sits between the supply and the consuming equipment. A back pressure regulator controls upstream pressure — it sits on the outlet of a vessel or system, opening to relieve pressure above the set point. The T1808 is a common back pressure regulator for separator gas outlets.
Q: Does Proxima stock BelGAS regulators in Baku?
Proxima holds stock of fast-moving BelGAS models. BelGAS factory lead time is 10 days average for standard configurations — short enough that most orders can be fulfilled quickly. Contact us for current stock availability.
