Honeywell Gas Valve Bleed Port

Steve Curran_2

Recently I Serviced A Natural Gas Boiler. I Noticed On The Main Gas Valve There Was A Venting Bleed Port On The Outlet Side Of The Valve. Can Any Service Tech. Out There Explain The Operation Of This Valve With The Bleed Port. Honeywell Main Gas Valve 120 Volt Model V48A2169 Does The Bleed Port Play A Part In The OPening And Closing Of The Gas Valve.

Mike Kusiak

The bleed port allows the gas behind the valve diaphragm to escape when the valve opens. When the valve is closed, gas pressure behind the diaphragm helps to hold it closed. This pressure must be released through the bleed for the valve to open. Go to Honeywells web site below and download the instruction sheet for the V48A valve. There is a complete explanation of how the diaphragm valve works.

http://customer.honeywell.com/catalog/pages/prod_search.asp

tim from Reed Wright

Valve with bleed port

Commonly known as a diaphragm gas valve. Bleed port shoulb be vented either to outside or into the burner area next to the pilot. You can alos install a bleed valve on bleed port to adjust how fast the valve opens. this helps on atmospheric to reduce hard firing. The bleed port also if vented properly will tell you if the diaphragm has gone bad. You will always have gas leaking out port.