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Non-return Valves

Non-Return-ValvesNon-return Valve general

Non-return Valves are to close surely and ensure a constant mass pad, in order to guarantee thereby a reliable and continuous dosage. There are not good or bad Non-retourn Valves, but only suitable and unsuitable ones. To reach a high service life with small attrition, is the objective of a good Non-retourn Valve of ours.

Non-retourn Valve 3-part

(full hardened, shaft tempered) from high alloyed steel (GT D1) standard.
This Non-return Valve represents a good compromise. They are available for all usual machine types.

Non-return Valves Lawson

(full hardened, shaft tempered) from high alloyed steel (GT D1) standard.
Non-return Valves are used predominantly for Stork machines.
Operational principle : fixed ferrule, blocked by pins.

Non-return Valves  3-part (locking ring with claws)

(full hardened, shaft tempered) from high alloyed steel (GT D1) standard.
Operational principle : fixed ferrule, blocked by screw. No attrition of the flanks by carrier pin on the ferrule. Precise injection possible.

Ball Non-return Valves

(full hardened, shaft tempered) from high alloyed steel (GT D1) standard and
high wear resitant balls.
Operational principle: the material which is to be processed flows in threough the inlet ports and and is lead past the ball. The ball will pushed forward by the mass flow and will be pressed against the sealing surface when the pressure decreases to certain level. In this way the reverse flow can be prevented.
Particularly suitably for very viscous materials and fast injecting.

All Non-return Valves are also available in other material qualities. The application of other materials depends on the synthetic material that is to be processed. Also other high-wear and corrosion resistant materials are available - we will offer you the suitable solution!

ETP Plastics Hardenberg

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Phone : 0031 523 712 402
Fax : 0031 848 838 830

Email: info@etpplastics.nl

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ETP Plastics B.V.
P.O. Box 105
7770 AC  Hardenberg
The Netherlands