Greenhouse vent openers - how hot?

[GBax]

One of my greenhouse vents is not opening and upon inspection the contents of the piston/ cylinder has leaked.

Does anyone know where I might be able to source a replacement (at a guess the greenhouse is 10+ year old)

thanks for your help.

Regards
Guy

P.S. How hot is too hot for a greenhouse?

[veggiechicken]

Do you know the make of Autovent?
Mine are all Bayliss. This may help Bayliss Autovents, Greenhouse Autovents, Identify Your Bayliss Autovent

[GBax]

I will get on a stepladder and see if I can find out this evening

[veggiechicken]

Can't see a name on the 2 I have!
Measure the tube, that would narrow it down!

[Jay-ell]

Do you know what make the vent opener is? Or possibly a photo. I don't have a clue but other more knowledge members may be able to make sense and give you pointers.

[Bren In Pots]

You can cool your GH by adding debris netting or old net curtains to the outside it lowers the temp by a few degrees.

[Stan79]

If you search "automatic greenhouse" on ebay there are 226 results... perusing the results might help narrow it down?

[GBax]

Had another look and i missed a label on one last time i looked they are a Bayliss Mk7
Hopefully i can track one down now.

Any thoughts on how hot is too hot?

[bario1]

I would think anything above 35 degrees is too hot. I think mine is set to start opening at 27 degrees.

[Stan79]

Yep - my potting shed hit 39.4 on Monday. The two automatic windows don't do enough to bring the temperature down when it's that hot and i forgot to open the door in the morning!

[Stan79]

A new cylinder looks quite cheap. A complete new opener is £100!!!

Bayliss MK7 Greenhouse Auto Vent Cylinder - BHL

[Guest]

^^^^Not sure where the £100 came from but you can buy direct from bayliss and that way they can't dispute any guarantee issues if needs be Bayliss Autovents, Greenhouse Autovents, Shop

[Baldy]

A new cylinder looks quite cheap. A complete new opener is £100!!!

Bayliss MK7 Greenhouse Auto Vent Cylinder - BHL

Looks way cheaper on amazon (thankfully)
https://www.amazon.co.uk/dp/B0027DJ5...EQRM0CEP071RZJ

[GBax]

Ordered a new cylinder this morning for £18.50 - hopefully it doesn't take a genius to fit it !

[Guest]

^^^It doesn't take a genius. I have fitted one and I finally admitted yesterday that I am an idiot!