Blow off valve protects acetylene regulators

Witt Gas has developed an acetylene blow-off valve to protect manifold pressure regulators from damage due to excess pressure by venting the gas.

Witt Gas describes its AV815 blow off valve as 'small and effective'.

The device vents acetylene in combination with manifold pressure regulators according to DIN EN ISO 7291.

The direct acting spring-loaded safety valve protects pressure regulators from damage due to excess pressure.

When the preset opening pressure is reached, the component, which is only 91mm long, releases excess gas.

The valve is available with six different opening pressures of 0.75 to 2.5 bar and nominal flow capacities of up to 90m3/h.

Witt told manufacturingtalk that the AV815 valve is particularly easy to install.

It can be installed in any orientation and is protected from contamination by means of a protective cap.

Suitable for working temperatures ranging from -40 to +80 deg C, Ievery single unit is inspected and certified by TUV before it is dispatched - a service not many suppliers offer, said Witt.

In addition to the safety benefits, users will find that this is beneficial if they are seeking to obtain approval for their own machinery, said Witt.

Witt relies on brass for its housings since brass has a higher resistance to corrosive environments.

The internal compression spring is made of stainless steel and the valve seal of EPDM.

Both the inlet with a dimension of G 1/2 male - sealed via an O ring - and the outlet - an M24 x 1 female type bolted connection - are standardised.

Several adapters are available to connect to the vent-off line.

* Wide range of safety valves - the AV815 is Witt's latest addition to its wide range of safety valves for nearly all technical gases, which have been in demand around the world for decades.

As an ISO-certified manufacturer, Witt also produces safety equipment for the protection of individual cylinders, discharge points and pipe systems from gas regression and deflagration.

Back to top