Hi folks,

I have been playing about with small non return valves for lubrication applications and I am trying to find a supplier of very small compression springs. The purpose is to hold stainless balls on their seats when the amount of flow is very small.

In pumps the balls are sucked or squeezed onto the seats because the rate of flow is reasonably large and continuous. When the flow is slow and discontinuous the ball needs to held on the seat.

I do not need a large quantity  so I expect it will be a retailer but there does not seem to be any on the internet.

Typically they will be less than 1/4" diameter and probably 0.010" wire and about 1/4"-3/8" long as the balls are 5/32" and smaller.

Any ideas?

Thanks very much, Fred Graham 

Hi Tony,

Thanks for your response, I have the catalogue and I will order a set from them and see what they contain. I had not noticed them before.

Cheers, Fred

Hi Folks,

I have found a great supplier from whom I can obtain exactly what I need. The company is called Lee Springs (http://www.leespring.com) and it is a UK company in Wokingham, Berkshire (Tel. 0118 978 1800).

Unfortunately each spring is not cheap ( about £1.20)  the min order quantity is 5 off and the min order value is £25.00  so you have to want each spring very much to spend this much!

Thanks for all your help, all the best, Fred Graham