Pop-off valve vs Dump-valve

Reply Subscribe

Thread Tools

Search this Thread

19 May 2003, 09:55 AM

ScoobyWhite

Scooby Regular

Thread Starter

Join Date: May 2002

Posts: 386

Likes: 0

Received 0 Likes on 0 Posts

Hi

I would like to know the diference in this two parts: Pop-off valve and Dump-valve????

Thanks

Reply Like

19 May 2003, 02:42 PM

MorayMackenzie

Scooby Senior

Join Date: Jun 1999

Posts: 3,410

Likes: 0

Received 0 Likes on 0 Posts

A pop off valve would be used for boost pressure control.
A dump valve is used to reduce compressor surge on lifting off.
A "blow off" valve is just another name for a dump valve. Subaru call the standard dump valve a "compressor bypass valve", IIRC.

Reply Like

19 May 2003, 04:54 PM

harvey

Former Sponsor

iTrader: (48)

Join Date: Mar 2001

Location: Darlington

Posts: 10,419

Likes: 0

Received 1 Like on 1 Post

A pop off valve will limit maximum boost pressure but is a bit crude. Andy F. used one as BOCU and I had one as BOCD (Boost Oscilation control device) Quite cheap and used in industry every day to control compressor fed pressure lines but lacks the sophistication of the electronic boost controller I use now.