A genuine Thetford OEM blue vent button designed for C2 cassette toilets. This essential component releases internal air pressure from the waste-holding tank during emptying, ensuring smooth, splash-free disposal and preventing gurgling or backflow.

If your original vent button is cracked, missing, or stuck, replacing it with this genuine part will restore proper venting and reliable performance.

Part Number: 0752485

Colour: Blue

Material: High-strength, chemical-resistant ABS plastic

Function: Air pressure release for waste tank

1 × Blue vent button assembl

Compatability:

• Designed specifically for Thetford C2 cassette toilets

• Fits both manual and electric flush versions

• Mounts directly onto the waste-holding tank vent port

Frequently Asked Questions 

Q: What does this part do?
The vent button equalises pressure in the waste tank while you’re emptying it. When pressed, it allows smooth waste flow and prevents air-lock “glugging.”

Q: Can I install it myself?
Yes ,  it’s a simple, tool-free job:

1. Remove the old button assembly.

2. Clean the vent opening.

3. Push the new button in firmly until it seats securely.

Q: Does it include the spring and seal?
Yes ,  the assembly comes complete with its own spring and integrated sealing ring.