An elastomeric non return valve (11) may be incorporated.

The non-return valve (40) comprises a ducks beak check valve.

single air drier non-return valve outlet

The invention relates to a piloted, blockable non-return valve and a hydraulic drive of a moulding unit, in which a non-return valve of this type is used.

A non-return valve (112) is provided in the passage (106).

The invention relates to a method for production of a non-return valve, in particular for use in an injection-moulding machine, and also to this non-return valve.

The second check valve and the third check valve are in opposite directions.

The first check valve adapted to receive an input from the second check valve.

The check valve is adapted to sealingly engage the check valve seat.

The check valve composed of a check ball supported by a check valve spring installed in a check valve cover is installed on a check valve sheet installed at the lower end of the piston.

three and one-half inch diameter check valve

The inlet port is fluidly connected to a first check valve and the discharge port is fluidly connected to a second check valve.

The stop pin assembly is configured such that it can be inserted and locked in place when the check valve is inserted within a valve body that contains the check valve.

However, once used it functions as a check valve.

The check valve (23) comprises a springloaded device (26), which comprises means (36) for retaining the device centrally in the check valve.

An air filter is disposed at the lower end of the check valve.