Anyone using a polyethylene air diaphragm pump for filter press?

[maple marc]

Looking to upgrade small filter press with a polyethylene air diaphragm pump. They seem to be rated for temperatures of about 180F. Anyone using them for hot syrup? I've been using a poly hand pump with no problems. Stainless prices are out of sight. Thanks for any info.

Marc

[sugarsand]

We got a diaphagm pump a couple years ago. I dont recall the particular materials used in the pump, but it was rated for 230 degrees and for mild abasive liguids. I shopped on ebay until I found the right one at the right price. Was real lucky, brand new pump for $165, want to pick up another at that price.

[maple flats]

180 would not be hot enough, you want to filter at or slightly above your bottling temp, if that is near the suggested max of 193, you need a pump that can handle 200 or more.

[wiam]

I bought this pump http://www.zoro.com/warren-rupp-double-diaphragm-pump-air-operated-220f-wr10kp5bkk9/i/G2116721/ On the advice of others on here. Worked well last year on my 7" press. Rated for 220 degrees. I sold the gear pump that came with my 10" and the air pump is going on. Zoro was the best price. Make sure it is rated for 220. Price is a lot lower for a lower temperature rating but I would not chance it. And I just noticed free shipping from Zoro.

[nymapleguy607]

I just bought an air pump for my press. It is the Kynar type platic rated for 248 degrees. The limiting factor after that is the temp ratings of the diaphragms