Thermostat - No air release valve?! Is it supposed to have o

yoda960 · Nov 29th, 2010, 14:21

Hi everyone,

I have a thermostat here for a 940 but it doesn't have an air release valve at the top, certainly looks well made apart from that though. Its a new old stock thermostat from a company called Ring Thermostats. I thought they come with air release valves though? I have ordered a new one from volvo just to be on the safe side. Are they supposed to have an air release valve?

Engine is B230FT

Cheers!

Yoda960

Oilydad · Nov 29th, 2010, 15:27

When you say an air release valve, I presume you mean the little 'toggle' of metal that is usually in the outer ring.

I've had them with and without that, and they have all worked fine. I think it's just different designs and manufacturers.

yoda960 · Nov 29th, 2010, 18:25

Yeah thats the bit, I might just use the one I have then. Thanks for the info

As long as it functions correctly then thats fine.

Clan · Nov 29th, 2010, 18:53

I wouldnt touch RING products with a barge pole .. especialy a vital part like a thermostat which could wreck your engine ..

yoda960 · Nov 29th, 2010, 19:12

Quote:

Originally Posted by Clan

I wouldnt touch RING products with a barge pole .. especialy a vital part like a thermostat which could wreck your engine ..

Why not? I know you wouldn't touch anything not Volvo but have you actually experienced ring thermostats?

Clan · Nov 29th, 2010, 19:27

Quote:

Originally Posted by yoda960

Why not? I know you wouldn't touch anything not Volvo but have you actually experienced ring thermostats?

No not ring thermostats , but RING electrical equipment , lighting .. over the last 20 years or so , lowest quality ... eg spot lights lasting just over a year before rusting out ..

yoda960 · Nov 29th, 2010, 20:10

Well this Ring thermostat I have here is new but old stock, the phone number on the box is even in the old format with just 4 digits for the area code. I don't think ring make thermostats any more. In fact i've just had a very close look at it and I can make out the word 'motorad' so they must have made the thermostats for 'ring'. Certainly doesn't look shoddy, i'll pop it in and keep a close eye on temp.

940_Turbo · Nov 30th, 2010, 00:10

If there is no toggle drill a small hole. It needs it for the system to bleed so you can actually re fill with coolant

vjck_uk · Dec 4th, 2010, 14:22

if you do drill one make it smaller than 1/8 of an inch as even that size hole will add to the warm up time,the little toggle is fitted to allow air to pass while topping up but on startup it closes

yoda960 · Dec 4th, 2010, 16:26

Thanks for the advice chaps, I had a bit of doubt in my mind so decided to buy a Volvo one instead i.e. with the toggle already there

Nov 29th, 2010, 14:21	#1
yoda960 Volvo 960 Last Online: Today 13:21 Join Date: Mar 2008 Location: Planet Earth	Thermostat - No air release valve?! Is it supposed to have o Hi everyone, I have a thermostat here for a 940 but it doesn't have an air release valve at the top, certainly looks well made apart from that though. Its a new old stock thermostat from a company called Ring Thermostats. I thought they come with air release valves though? I have ordered a new one from volvo just to be on the safe side. Are they supposed to have an air release valve? Engine is B230FT Cheers! Yoda960

Nov 29th, 2010, 15:27	#2
Oilydad Premier Member Last Online: Mar 21st, 2016 21:21 Join Date: Aug 2009 Location: Exeter Devon	When you say an air release valve, I presume you mean the little 'toggle' of metal that is usually in the outer ring. I've had them with and without that, and they have all worked fine. I think it's just different designs and manufacturers. __________________ Are We Nearly There Yet! No longer a VOLVO owner, not by choice, but 'cause they don't make proper Volvos any more!

Nov 29th, 2010, 18:53	#4
Clan Experienced Member Last Online: Today 11:24 Join Date: Jun 2007 Location: L/H side	I wouldnt touch RING products with a barge pole .. especialy a vital part like a thermostat which could wreck your engine .. __________________ My comments are only based on my opinions and vast experience .

Dec 4th, 2010, 14:22	#9
vjck_uk Premier member Last Online: Jul 29th, 2017 15:54 Join Date: Nov 2002 Location: southern edge of birmingham	if you do drill one make it smaller than 1/8 of an inch as even that size hole will add to the warm up time,the little toggle is fitted to allow air to pass while topping up but on startup it closes __________________ If all else fails........read the instructions !

Nov 29th, 2010, 18:25	#3
yoda960 Volvo 960 Last Online: Today 13:21 Join Date: Mar 2008 Location: Planet Earth	Yeah thats the bit, I might just use the one I have then. Thanks for the info As long as it functions correctly then thats fine.

Nov 29th, 2010, 20:10	#7
yoda960 Volvo 960 Last Online: Today 13:21 Join Date: Mar 2008 Location: Planet Earth	Well this Ring thermostat I have here is new but old stock, the phone number on the box is even in the old format with just 4 digits for the area code. I don't think ring make thermostats any more. In fact i've just had a very close look at it and I can make out the word 'motorad' so they must have made the thermostats for 'ring'. Certainly doesn't look shoddy, i'll pop it in and keep a close eye on temp.

Nov 30th, 2010, 00:10	#8
940_Turbo . Last Online: Jul 14th, 2013 14:28 Join Date: Dec 2009 Location: MK	If there is no toggle drill a small hole. It needs it for the system to bleed so you can actually re fill with coolant

Dec 4th, 2010, 16:26	#10
yoda960 Volvo 960 Last Online: Today 13:21 Join Date: Mar 2008 Location: Planet Earth	Thanks for the advice chaps, I had a bit of doubt in my mind so decided to buy a Volvo one instead i.e. with the toggle already there

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