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[Sir Tigger KC]

I need one. 

The old one I've pulled out of the central heating expansion tank is 30 years old so it's done well, and is a Part 1 type where the water pours out of a hole underneath.

Screwfix have those, but also have Part 2 types with a little spout on the top. Is there any advantage of the Part 2 over the Part 1? 


https://www.screwfix.com/p/flomasta-brass-part-1-float-fill-valve-1-2-/134jn#product_additional_details_container

https://www.screwfix.com/p/flomasta-brass-part-2-float-fill-valve-1-2-/352jn#product_additional_details_container

I was going to change it like for like, but thought I'd check with the intelligentsia here first!  TIA! 

[dave the builder]

Part 2 has more adjustment options for your ball 
Also, a polyethene sock can be fitted to the outlet (to quieten the water when filling)
oh ,and it's a quid cheaper 

[Sir Tigger KC]

Part 2 has more adjustment options for your ball 
Also, a polyethene sock can be fitted to the outlet (to quieten the water when filling)
oh ,and it's a quid cheaper 

When I first looked earlier they were both £7.98, and had gone up in price when I went back to get the links a couple of hours later. 

[Kevin Wood]

I'd replace like with like. It's an expansion tank so it'll just sit there until the new one siezes up like the old one did. If it starts making any noise you have bigger problems.

[Doctor Gollum]

Part 2 has more adjustment options for your ball 
Also, a polyethene sock can be fitted to the outlet (to quieten the water when filling)
oh ,and it's a quid cheaper 

When I first looked earlier they were both £7.98, and had gone up in price when I went back to get the links a couple of hours later. 

Revist the page, then clear your last 15 minutes of history, and revisit it and you should find the prices have returned to the previous amount

[johnnydog]

Airlines seem do that when searching for a flight - the price seems to go up everytime you re-visit a site after checking other airlines for the best deals...

[Sir Tigger KC]

Airlines seem do that when searching for a flight - the price seems to go up everytime you re-visit a site after checking other airlines for the best deals...

Yes always clear your cookies before visiting any site like Booking.com. 

I think I just caught the tail end of a promotion with my first visit to Screwfix though rather than any dark arts with cookies. 

[Viral_Jim]

Part 2 has more adjustment options for your ball 

Going to ask the dumb DIYer question now....

What does Part 1 and Part 2 refer to? Are they some portion of building reg's?

[Sir Tigger KC]

Part 2 has more adjustment options for your ball 

Going to ask the dumb DIYer question now....

What does Part 1 and Part 2 refer to? Are they some portion of building reg's?

I assume so and just to complicate things further there's a Part 3 float valve as well. 

I fitted a Part 1 to my F&E tank, so like for like and it just seems a simpler design to the Part 2. Job jobbed. 

[cam.in.head]

like for like in my opinion . a good old brass unit rather than the modern plastic ones any day .
and as said ,if its a heating expansion tank it will rarely be operating anyway !

[dave the builder]

Part 2 has more adjustment options for your ball 

Going to ask the dumb DIYer question now....

What does Part 1 and Part 2 refer to? Are they some portion of building reg's?

Part 2 is water regs WRAS to do with not siphoning back into the mains water supply if water pressure fails or the tank over fills above the ball c**k 
also check valves on mixer taps and outside taps etc

part 1 is not worth fitting anymore IMHO

[Sir Tigger KC]

Part 2 has more adjustment options for your ball 

Going to ask the dumb DIYer question now....

What does Part 1 and Part 2 refer to? Are they some portion of building reg's?

Part 2 is water regs WRAS to do with not siphoning back into the mains water supply if water pressure fails or the tank over fills above the ball c**k 
also check valves on mixer taps and outside taps etc

part 1 is not worth fitting anymore IMHO

Well I did. 

[dave the builder]

Part 2 has more adjustment options for your ball 

Going to ask the dumb DIYer question now....

What does Part 1 and Part 2 refer to? Are they some portion of building reg's?

Part 2 is water regs WRAS to do with not siphoning back into the mains water supply if water pressure fails or the tank over fills above the ball c**k 
also check valves on mixer taps and outside taps etc

part 1 is not worth fitting anymore IMHO

Well I did. 

in breach of WRAS 
The water police will arrest you and throw you in jail the canal 

[Sir Tigger KC]

Part 2 has more adjustment options for your ball 

Going to ask the dumb DIYer question now....

What does Part 1 and Part 2 refer to? Are they some portion of building reg's?

Part 2 is water regs WRAS to do with not siphoning back into the mains water supply if water pressure fails or the tank over fills above the ball c**k 
also check valves on mixer taps and outside taps etc

part 1 is not worth fitting anymore IMHO

Well I did. 

in breach of WRAS 
The water police will arrest you and throw you in jail the canal 

How can the tank water siphon back into the water supply, if the water level goes over the ball cock, as that would mean there is a flow of water coming out of the valve? 

Frankly I've got bigger problems if that happens anyway, as it would probably mean a combination of a blocked overflow and a stuck or failed ballcock valve, meaning a god awful mess!   

[cam.in.head]

if the valve is open slightly and the water level goes above the outlet and then the water pressure drops to zero the water can suck back down the pipe bringing tank water with it .
granted its a lot of "ifs" but i think that what it means ?