Pipelines | Manifolds | Valves | Regulators | Ordering A Regulator | Fault Finding | Repairs | Testing | Calibration

Freshford can supply all gas control equipment requirements for Industry, Education and Research applications

Pipelines: 

Freshford design, install, inspect and test small bore  pipe line systems to BCGA Codes of Practice. 

Manifolds

We supply new and repair/maintain all types of manifold system and equipment for gas and air supply pipelines.

Valves and Filters

We supply high and low pressure valves and filters for a variety of applications including corrosives and analytical processes.

Regulators

Regulators in brass are suited to most industrial grades of gases and fluids up to 99.99% purity (including acetylene, argon, helium, hydrogen, oxygen and CO2) and are generally classified into 3 design types types with either no gauge (these are low cost general purpose regulators where monitoring of the gas supply and outlet pressure is not required), one gauge (these normally only show the inlet pressure, but can be supplied to show the outlet pressure instead), or 2 gauges (the 2-gauge model allowing accurate pressure reading of both inlet and outlet pressures) which is the most common design used today. Brass chrome, stainless steel, monel and hasteloy regulators are also available and are most suited to all types of high purity, toxic, corrosive, mixed and special gases and fluids above 99.995% and are similarly classified as the brass industrial regulator designs.

Single-stage regulators give good pressure and flow characteristics where slight variation in outlet pressure is acceptable as cylinder pressure decreases. They are ideal for closely monitored, short run analytical work, engineering and industrial applications, and are available in a range of inlet and outlet pressures (up to 6000 psi) to suit most gases. This type of regulator gives good service for a small unit cost.

Single-stage regulator types include:

Two-stage regulators, also known as multi-stage, incorporate all the features of single-stage regulators but provide additional safety and precise control over the complete inlet pressure range through the two gas reduction chambers. The first stage provides a steady pressure supply to the second via either a stainless steel diaphragm or a brass piston. The large area of the neoprene second stage diaphragm has the flexibility to produce fine accurate pressure control over a long period of time. The neoprene can be coated with PTFE or replaced with stainless steel for the purer gases and gas mixes. Multi-stage regulators provide the ultimate answer to gas pressure requirements, capable of working with cylinder pressures up to 300 Bar with safety and precision control. They are extremely versatile and can be found in many diverse applications including life support systems, food and drink processing, laboratory supply systems and high tech manufacturing. They are available with either bottom or side entry cylinder connections for safe fitting to all the major gas companies’ cylinders.

Two-stage regulator types include:

Back-pressure regulators are used for high sensitivity back-pressure control of sampling conditioning systems for analysers. They are made in a range of brass and corrosive resistant materials 

Lecture-bottle regulators are single–stage, compact and lightweight, designed specifically for lecture bottle applications with an excellent pressure regulation over the useful inlet pressure range of the bottle. They are made for a range of inlet and outlet pressures to suit the application.

Lecture-bottle regulator types include:

Ordering a Regulator

The table below shows the minimum information required by your regulator supplier

Reassembled
Clean

Repair

As received - Dirty

Stripped Down - Dirty

Stripped Down - Clean

Testing

Calibration

Calibration of our test equipment meets the specification required of BCGA, ISO and BS specification(s) for test and calibration of pressure gauges and instruments.

Fault Finding

The importance of maintaining a system that is leak free and safe to use cannot be over stressed. Not only is it very dangerous, but it can also be very costly in lost gas revenue. It is in your interest to look after any equipment to the best of your ability. The results of weekly and monthly inspections should be recorded not only to make sure you are getting the best service out of your equipment but also to assure you that it is in a safe working order at all times.

Checking for leaks is simple if you follow this routine. If you suspect you have a leak, apply an approved leak detection solution to all fittings and joints and leave for a few minutes. Leaks will show up as bubbles. Any faulty fitting should be tightened and retested. If you cannot do this safely or you are in any doubt, turn off the gas supply, report any faults and have the equipment checked out or repaired.