JW Winco

Our customers in the USA are managed by JW Winco. Please, use the website of JW Winco: jwwinco.com

GN 774.1 Breather caps Plastic, with membrane


GN 774.1 Breather caps, Plastic Colour: RT - red, RAL 3000
ELESA original design
code: TVD.
Colour: RT - red, RAL 3000
GN 774.1 Breather caps, Plastic Colour: RT - red, RAL 3000 GN 774.1 Breather caps, Plastic Colour: GN - green, RAL 6001

Product description


Breather caps GN 774.1 prevent the build up of a pressure drop over liquids in a tank.

They are used when a tank has to be rapidly emptied. The elastic membrane ensures a sufficient supply of air to prevent any vacuum build-up in the tank.

Besides that, the back pressure behind the membrane will prevent the escape of any liquid in the tank to the outside, especially during transport. If the tank is turned upside down with the additional back pressure from the liquid, it will be sufficient to keep the outlet firmly shut.


Plastic (Polypropylene PP)
  • temperature resistant up to 50 °C

Upper part (cap)
  • red, RAL 3000RTRT
    Membrane and flat seal EPDM (Ethylene-Propylene-Dim-caoutchoc)
  • green, RAL 6001GNGN
    Membrane and flat seal FKM (Fluor-caoutchouc, Viton®)
  • Symbol black printed

Lower part (threaded part)


Technical drawing

Hide technical drawing
GN 774.1 Breather caps, Plastic sketch

Article options / Table

Show / Hide columns
d1d2d3d4l1l2Air flow rate in l/min
Presssure drop
in mbar

Sealing membrane

70G 1 1/43368,5175950360370
70G 1 1/43368,5175940320330
70G 1 1/43368,5175930260280
70G 1 1/43368,5175920210230
70G 1 1/43368,5175910140160
70G 1 1/43368,517595110130

Build & Price

Open 3D configurator
Outside diameter d1
Thread d2

Selected Part (How to order)

Total (net)
plus VAT 2,76 €
gross 20,02 €
In stock
Weight: 0,080 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone+49 7723 6507 - 0
RoHS: Yes
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Please note our quantity discounts.
With a total value (net) per order:
from 175,00 € -> 10 % discount
from 275,00 € -> 20 % discount
from 375,00 € -> 30 % discount
With a total value (net) per order:
All prices in accordance with our price list No. 52, valid from 1 May 2019, plus VAT only valid for Germany.

CAD data


For getting CAD data please enter you Email address. But we would be pleased, if you are fully registered.

Please enter the code you can find in the picture.

CAD Download Tutorial About CAD-Downloads
Save as favourite

Please enter the code you can find in the picture.

Do you find your product ?

Our Service-Team is available from Monday to Friday from 7:00 until 17:30: +49 7723 6507 - 100

To the customised elements | To the contact persons

This could also be interesting...


Our service team is available from Monday to Friday between 7am and 5:30pm:

+49 7723 6507 - 0

Or use the practical callback service:

Privacy Policy

Ganter Catalogue

The new catalogue with countless standard parts and elements and many exciting ideas for constructive problem solutions.


Ask for it free of charge

Your contact

You are looking for a Ganter partner near you? Please select the country.