For over 50 years, our partner GO Regulator has been a leading designer and manufacturer of standard and custom single/two stage pressure regulators, back pressure regulators and heated vaporising pressure regulators for the Analytical Instrumentation, Petrochemical, Oil & Gas and Specialty Gas markets.
Today, GO continues to offer a versatile line of time proven products designed to fulfil a wide range of typical and bespoke gas and liquid application requirements. In several series, a standard 316L body material is used to facilitate a variety of threaded/welded connections, with optional materials of Brass, Monel®, Hastelloy® C-276, or Titanium construction being offered.
In addition, a variety of seat materials, orifice sizes and pressure control ranges allow the end user to utilise our models for a broad spectrum of capabilities. The “customer focused” philosophy, supported by experienced people enables GO Regulator to persevere in providing viable product solutions to the challenging applications of today at competitive prices.
Core Pressure Regulator Models
Virtually all requirements involved for many applications can be fulfilled with approximately fifty GO fluid control product models and associated optional features. Below we are highlighting some of the key/core models for most tasks and for our complete range of GO products please click here.
PR1/PR2 Series |
PR7/PR7LF/PR7ULF Series |
PR50/PR57/PR59 Series |
CYL2/CYL20 Series |
BP3 Series |
BP8/BP8LF Series |
BP60/BP66 Series |
SPR/SBPR Series |
CPR1/CBP3/MR1 Series |
HPR2/CV/DHR Series |
PR9 Series |
COM2B Series |
Types & Variations
There are lots of different types of regulators that can be used for different tasks in a variation of applications. Some of the most common that we are working with include:
- Pressure Reducing – a pressure reducing design is used to take a higher supply inlet pressure (P1) and reduce it down to a lower controlled outlet pressure (P2).
- Back Pressure – a back pressure design (or “overflow” regulator) is used to control and maintain a constant inlet pressure (P1) giving operators a controlled and stable line pressure.
- Cylinder Pressure – a cylinder pressure or ‘dual stage’ design is again used to take a higher supply inlet pressure (P1) and reduce to a lower controlled outlet pressure (P2), however the pressure is dropped in two stages in a controlled manner. These are most commonly installed on gas cylinders/bottles to provide a higher level of control accuracy as the cylinder depletes (to help combat the ‘decaying inlet effect’.
- Vaporising/Heated – either electrically heated or steam heated designs are used with either pressure reducing (single stage), back pressure or dual stage mechanical operation depending on the application requirements. Vaporising regulators are used to heat the media as it passes through the wetted flow path, often situated upstream prior to sampling systems or analysers.
- Speciality Units – regulators utilising any of the above-mentioned principles, except designed for different purposes in more niche applications include miniature/compact versions for small space claims, dome-loaded designs for pneumatic pilot air operation, high pressure designs for up 10,000 PSIG control, high flow designs for up to 3.00 Cv, high temperature for up to +537°C, crossover manifolds for automatic changeover of cylinder bottles and more.
For a full breakdown of these different principles of operation can work for you, including detailed explanations of how they work, please visit our blog post by clicking here.
Our Features & Benefits
All of our GO regulators offer end users with a unique set of features and benefits. Taking our time-tested and most popular PR1 series, we can provide the following unique advantages over market-leading competitors:
For more information on the different advantages to end users and for detailed breakdowns of what models are best for gas/liquid use in various applications, please visit our blog post by clicking here.
Comparison of our Models
For a summary overview of how some of our core pressure reducing and back pressure models compare on technical specifications, please see the below quick reference chart:
Model | Description |
Max. Inlet |
Control Pressures | Seat/Actuator Materials |
Flow Coefficients (Cv) | Port Types | Type/Applications |
---|---|---|---|---|---|---|---|
PR1/PR2 |
Standard Pressure Reducing |
3,600 PSIG up to 6,000 PSIG | 0 – 10 PSIG up to 0 – 750 PSIG |
Tefzel, CF PTFE, Polyimide, PCTFE, High Density PTFE or PEEK | 0.06, 0.20, 0.025 or 0.50 | ¼” FNPT, 3/8” FNPT or Tube Stubs | Diaphragm Actuated for Gas and Liquid Control |
PR7 |
High Flow Pressure |
300 PSIG up to 3,600 PSIG | 0 – 1 PSIG up to 0 – 500 PSIG | Viton, PTFE, Kalrez or PEEK | 1.10 | ¼” FNPT, 3/8” FNPT, ½” FNPT or Tri-Clover | Diaphragm Actuated for Gas and Liquid Control |
PR7LF |
High Sensitivity Pressure |
300 PSIG up to 3,600 PSIG | 0 – 6 PSIG up to 0 – 250 PSIG | Tefzel, Viton, PCTFE, High Density PTFE or Kalrez | 0.06, 0.20, 0.025 or 0.50 | ¼” FNPT, 3/8” FNPT, ½” FNPT or Tri-Clover | Diaphragm Actuated for Gas and Liquid Control |
MR1 |
Ultra Miniature Pressure |
3,600 PSIG up to 6,000 PSIG | 0 – 10 PSIG up to 0 – 500 PSIG | Tefzel, PCTFE or PEEK | 0.06 or 0.025 | 1/8” FNPT, 1/16” FNPT or Surface Mount | Diaphragm Actuated for Gas and Liquid Control |
PR50 |
High Pressure Reducing |
3,600 PSIG up to 6,000 PSIG | 0 – 500 PSIG up to 0 – 2,000 PSIG | Tefzel, Polyimide, PCTFE, High Density PTFE or PEEK | 0.06, 0.20 or 0.025 | ¼” FNPT, 3/8” FNPT or Tube Stubs | Diaphragm Actuated for Gas and Liquid Control |
PR56/PR57 |
Ultra High Pressure |
10,000 PSIG | 0 – 250 PSIG up to 0 – 10,000 PSIG | Polyimide or PEEK | 0.05 or 0.20 | ¼” FNPT, 3/8” FNPT or Tube Stubs | Piston Actuated for Gas and Liquid Control |
PR59 |
High Pressure/ |
1,000 PSIG up to 4,000 PSIG | 0 – 250 PSIG up to 0 – 4,000 PSIG | PCTFE or Teflon | 1.20 | ½” FNPT or ¾” FNPT | Piston Actuated for Gas and Liquid Control |
CYL20 |
Dual Stage Cylinder |
3,600 PSIG up to 6,000 PSIG | 0 – 10 PSIG up to 0 – 500 PSIG | Tefzel, PCTFE, High Density PTFE or PEEK | 0.06, 0.20, 0.025 or 0.50 | ¼” FNPT, 3/8” FNPT or Tube Stubs | Dual Diaphragm Actuated for Gas and Liquid Control |
BP3 |
Standard Back Pressure |
3,600 PSIG | 0 – 250 PSIG up to 0 – 1,000 PSIG | Viton, Kalrez, High Density PTFE, Polyimide or PEEK | 0.20, 0.04, 0.30, 0.005 and more | ¼” FNPT, 3/8” FNPT or Tube Stubs | Diaphragm Actuated for Gas and Liquid Control |
BP8 |
High Flow Back Pressure Regulator |
500 PSIG | 0 – 250 PSIG up to 0 – 500 PSIG | Viton, PEEK or Glass-Filled PTFE | 1.20, 0.70 or 0.40 | ¼” FNPT, 3/8” FNPT, ½” FNPT or Tube Stubs | Diaphragm Actuated for Gas and Liquid Control |
BP8LF |
High Sensitivity Back Pressure Regulator |
500 PSIG | 0 – 6 PSIG up to 0 – 500 PSIG | Viton, High Density PTFE, Polyimide, CF PTFE, Kalrez | 0.20, 0.04, 0.30, 0.005 and more | ¼” FNPT, 3/8” FNPT or Tube Stubs | Diaphragm Actuated for Gas and Liquid Control |
BP66 |
Ultra High Back Pressure Regulator |
10,000 PSIG | 0 – 2,000 PSIG up to 0 – 10,000 PSIG | Polyimide or PEEK | 0.04, 0.12 or 0.01 | ¼” FNPT, 3/8” FNPT or Tube Stubs | Piston Actuated for Gas and Liquid Control |
*Most commons selections have been listed and standardised options are highlighted in bold. For special options not listed please contact us.
Our regulators are also available with a huge variety of useful optional extras, including:
- Extra Inlet and Outlet Ports – to meet almost any piping configuration possible.
- Panel Mounting – either from base mounting threads (for mounting brackets or ‘step brackets’) or panel ring(s) underneath the hand wheel for flush mounting into a pre-drilled wall panel.
- Self-Relieving – an integral mechanism which operates as a highly sensitive relief valve to prevent downstream over-pressurisation, as well as venting the downstream to atmosphere as the outlet pressure setting is decreased.
- Diaphragm-Attached-Poppet – a threaded poppet/diaphragm assembly is useful in applications where contamination is present in the media. This tends to cause a build-up of contamination on the regulator seat, causing leakage through from the inlet side to the outlet side (rising outlet pressure. This configuration forces the diaphragm upwards to prevent rising outlet pressure and may also help in applications where positive shut-off is desired.
- Cleaning and Coating – cleaning standards for Oxygen Service and Sulfinert Coating.
- Liquid Service – special liquid service diaphragms and higher micron inlet filter screens (gauze type) to help combat effects of water hammer or particulate filtration.
- Tamper-Proof – optionally replace the standard adjustable hand knob/wheel for a tamper-proof acorn nut, allowing operators to set to their desired control pressure and lock it off to prevent any undesired adjustments.
Flow Sizing
For an itemised list of information on what is needed to correctly size, select and specify a regulator, please reference the below checklist:
1 | Pressure Regulated* | Pressure Reducing or Back Pressure? |
2 | Type of Regulation | Line or Bottle? |
3 | Preferred Materials | 316L, Brass, Monel®, Hastelloy® or Other? |
4 | Upstream Pressure (P1)* | Eg. in PSIG/BARG (Min/Normal/Max) |
5 | Downstream Pressure (P2)* | Eg. in PSIG/BARG (Min/Normal/Max) |
6 | Flow Rate (Q)* | Eg. in SCFM/LPM (Min/Normal/Max) |
7 | Temperature (T)* | Eg. °C/°F (Min/Normal/Max) |
8 | Media (M)* | Eg. Nitrogen/Air/Argon/Water |
9 | Line Size/Connection Size | Eg. ¼” or ½” |
10 | Preferred Connection Type | Eg. NPT, BSPP, VCR, Tube OD Compression |
11 | Flow Direction | Eg. Left to Right or Right to Left |
12 | Mounting | Base Mounting, Panel Mounting or None? |
13 | Pressure Indicators? | Are Pressure Gauges or Sensors needed? |
14 | Fittings or Connectors? | Are Cylinder Connectors or Adapters needed? |
15 | Other Accessories? | Any Flexible Hoses, Relief Valves, Filters or Other? |
16 | Application Details | Eg. For a Nitrogen Gas Cylinder |
17 | Special Notes/Requirements | ?? |
*Minimum required information has been marked with an asterisk.
For more detailed considerations on how to size and select a pressure regulator, including flow coefficient (Cv) and max. flow rate calculation tools, please click here to download our sizing brochure. Our calculation tools allow you to correctly select the required flow coefficient (Cv) value for your pressure reducing or back pressure units. These software tools will utilise your process data to calculate the Cv so that you can achieve your required flow rate
Some of the most common flow formula abbreviations and definitions include:
- Cv - Flow coefficient for regulators and valves that expresses flow capabilities of a unit at full open condition. For liquids, this coefficient is defi ned as the flow of water at 60°F in gallons per minute at a pressure drop of one PSIG. For gases, this coefficient is defined as the flow of air at standard conditions in standard cubic feet per minute for each PSIG of inlet pressure.
- SL - Specific gravity of liquids relative to water, both at standard temperature of 60°F. (Specific gravity of water = 1.0 @ 60°F).
- Sg - Specific gravity of a gas relative to air; equals the ratio of the molecular weight of the gas to that of air. (Specific gravity of air = 1.0 @ 60°F).
- P - Line pressure (psia).
- P1 - Inlet pressure expressed in PSIA.
- P2 - Outlet pressure expressed in PSIA.
- DP - Differential pressure (P1 – P2).
- PSIA - Absolute pressure which is gauge pressure (PSIG) plus 14.7 (atmospheric pressure).
- QL - Liquid flow in gallons per minute (GPM).
- Qg - Gas flow in standard cubic feet per minute (SCFM). (At standard conditions of 60°F and 14.7 psia).
- Q - Volume flow rate in cubic feet per minute (CFM).
- M - Mass flow rate in pounds per minute (lbs/min.).
Installations & Applications
Our GO pressure regulators are used in an enormous selection of applications and industries, from industrial to analytical/high-tech to UHP environments. Some of the most regular industries and applications we work with can include:
- Chemical & Petrochemicals – including research laboratories, coating systems and pilot plants.
- OEM Equipment & Machinery – including pollution control equipment, gas analysers, test stands, oil and gas control skids and gas turbine controls.
- Oil & Gas – including well heads, pipeline transportation, oil and gas exploration, offshore platforms or refining facilities.
- Power Generation – including fossil fuel power generation, nuclear power plants, specialty gas and steam plants.
- Pulp & Paper – including batch or continuous processing, fluid transfer, mixing or plant utilities.
- Calibration Gas – including sample conditioning systems, gas blanketing systems and pressure let down stations.
Some common installations for pressure reducing and back pressure regulators are shown below:
For additional downloads on bottle connector compatibility, physical properties of gases and guides on how to restrict a regulator, please click here to visit our resources centre.
Custom & Bespoke Designs
Over the years we have been involved with many specialist and niche applications, providing completely customised and
bespoke solutions tailored specifically to customer requirements.
Most recently, we worked in partnership with one of our customers who is a leader in fusion power research and sustainable nuclear energy solutions, and they approached us with some requirements for customised pressure regulator assemblies according to their specifications.
We delivered our CYL-20 dual-stage high cylinder pressure regulators, fitted with both standard mechanical 232.30 pressure gauges for visual confirmation and IS-3 ATEX Exia intrinsically safe pressure sensors for remote monitoring, suitable cylinder connectors and twin ferrule compression fittings, with interchangeable inlet ports for bottom or side entry possibilities.
We were able to act as a complete solution provider for our customer, to procure, supply, assemble and test all assemblies in-house at our headquarters. We are always happy to work with our customers on meeting bespoke requirements designed around specialist applications and for more case study examples please click here to visit our ‘Resources’ page.
Stock Listing
For readily available options, please view our Stock Listing and Enquiry Guide to help with selecting a suitable regulator, which can be downloaded by clicking on the image on the right.
We are constantly optimising our stock profiles to ensure that we have always have units readily available off-the-shelf in a variety of customised configurations. If you require any assistant sizing or selecting a suitable model, please get in touch with our expert team for guidance.
Whether you are looking to control gas or liquids, we have a solution that has got you covered. For any requirements of pressure regulators in the UK, look no further.