GasPro™ Flow Restrictors
Porvair GasPro™ Flow Restrictors are designed with hundreds of small, interconnected pore passageways which offer significant benefits when compared to single bore restrictive flow orifices. Flow limiting devices are often installed in compressed gas supply lines and gas distribution manifolds to prevent unintentional high gas flow caused by a ruptured gas line, malfunctioning valve or pressure regulator.
- Gas distribution panels
Porvair GasPro™ Flow restrictors protect components and offer a possible replacement for needle valves and MFCs in constant pressure and flow applications.
- Exhaust venting systems
Flow Restrictors can reduce exhaust system requirements and offer significant cost reduction.
- Flow splitting, flow balancing, dilution and mixing
Flow restrictors can be custom made for each gas supply line.
- Controlled venting
Controlled venting flow rate during vacuum chamber venting or purging.
- Pressure snubbers
For the prevention of pressure surges and pressure shock.
- Flame arrestors
Flow restrictors can also be designed to create a barrier to quench a flame and prevent the flame from igniting a combustible gas.
Features and benefits
- Improved gas safety
Porvair GasPro™ Flow Restrictors limit the maximum flow when handling hazardous gases.
- Tamper proof flow control
Flow restrictors are individually calibrated for accurate, repeatable flow with a set pressure. They provide a fixed flow without moving parts or adjustments.
- Provide laminar flow
To reduce turbulence in gas lines and for low velocity gas delivery applications.
- Corrosion resistant
Porous and hardware fitting materials 316L stainless steel and Hastelloy® C22.
- Precision welded in a specially designed glove box
Precision welding of surface mount and flat gasket flow restrictors in a controlled atmosphere glove box system to eliminate oxidation colour.
- 100% Helium leak tested
For safety and to insure seal integrity.
- Ultrasonically cleaned
In reagent grade IPOH and deionized water flushed for maximum cleanliness.
- High pressure N2 pulse flush
With 0.003m filtered and purified Nitrogen to remove particles and prevent shedding.
- Vacuum dried
To less than 1ppm moisture content as needed.
- Laser marked
With flow details for easy identification.
In chemically clean, Class 100 nylon inner bag and polypropylene outer bag.