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TVD.

Material

Polypropylene based (PP) technopolymer.

  • Cover: red colour (TVD-EPDM), green (TVD-FKM).

Graphic symbol "valve" tampoprinted in black colour.

  • Avoid contact with solvents, alcohol or detergents containing alcohol to preserve tampoprinted graphic symbol.

Threaded connector: black colour.

Standard executions

  • TVD-FKM: flat packing ring and FKM membrane gasket, hardness 70 Shore A.
  • TVD-EPDM: flat packing ring and EPDM membrane gasket, hardness 70 Shore A.

Maximum continuous working temperature

50°C.

Features and applications

TVD. breather caps with vacuum breaker valve are suitable for reservoirs and tanks for liquid transport.

The membrane retaining system allows a quick emptying out of the reservoir by letting in big quantities of air through the cap. Thus avoiding the vacuum inside the reservoir, slowing down the liquid exit.

The pre-set pressure of the membrane gasket stops any liquid loss when the reservoir is shaken (for example during transportation).

The liquid pressure on the gasket guarantees a perfect seal of the cap, for example in case of overturning of the reservoir.

Resistance to chemical agents

Tests carried out under standard laboratory conditions at 23°C. Values to be considered only as guidelines.

Please contact ELESA Technical Department for further chemical resistance details to particular liquids not reported in the table.

 
DEPRESSIONFLOW RATE
FKMEPDM
50 mb360 l/min370 l/min
40 mb320 l/min330 l/min
30 mb260 l/min280 l/min
20 mb210 l/min230 l/min
10 mb140 l/min160 l/min
5 mb110 l/min130 l/min
 

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