Non-return valves prevent the working medium from returning during its flow thrugh the installation. Flangeless valves are equipped with connector pipes with dimensions in accordance with PN-80/H-74219 norm and with DIN 2448 standard (marked additionally with symbol: /D). Differences in dimensions are showed in the tables. They can be either throughway or angle valves, bolt and with or without flanges. Valves’ leaktightness in closure position is secured by P.T.F.E. gasket pressed down by the valve head. The casing is made from welded high resistance P355 steel. The valve head is made of aluminium alloy.

Working parameters for ZZPb 10-200, ZZKb 10-200:
working pressure: 25 bar, temperature range: – 40ºC / +150ºC

Working parameters for ZZPk 10-200, ZZKk 10-200:
working pressure: 25 bar, temperature range: – 40ºC / +150ºC

Working parameters for ZZPs 10-20, ZZKs 10-20:
working pressure: 25 bar, temperature range: – 40ºC / +150ºC

Non-return valve ZZPs

Non-return valve

ZZPs

Non-return valve ZZPs - scheme

Non-return valve

ZZPs

Non-return valve ZZPb - zdjęcie/przekrój

Non-return valve

ZZPb

Non-return valve ZZPb - scheme

Non-return valve

ZZPb

Non-return valve ZZKs

Non-return valve

ZZKs

Non-return valve ZZKs - schemat

Non-return valve

ZZKs

Non-return valve ZZKk

Non-return valve

ZZKk

Non-return valve ZZKk - scheme

Non-return valve

ZZKk

Non-return valve ZZKb

Non-return valve

ZZKb

Non-return valve ZZKb - scheme

Non-return valve

ZZKb

Non-return valves ZZPk

Non-return valve

ZZPk

Non-return valve ZZPk - scheme

Non-return valve

ZZPk

Working medium: ammonia, freons, LPG, air and other non-aggressive gases.

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Catalogue - Non-return valves in PDF format

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