Dump Valves

[Adventure Rider]

I have a 2007 Keystone Raptor RP3712 and I need to replace my dump valves. Does anyone know which ones to purchase? I would like to purchase before pulling the old ones out. TIA.

[JohnP]

Originally Posted by Adventure Rider

I have a 2007 Keystone Raptor RP3712 and I need to replace my dump valves. Does anyone know which ones to purchase? I would like to purchase before pulling the old ones out. TIA.

They are generally standard size,,,, but just go under the trailer and measure the square adapter plate to be safe.

[chuckster57]

Welcome to the forum

Depends on where the valve is located. At the tank opening is usually 3”, but gray water tanks may have a reducer for 1 1/2” valve.

You also need to know if they are Valterra or Bristol. Best to put eyes on the valves to be sure.

As a rule of thumb, 3” is black tank and 1 1/2” is gray tank. As I remember Keystone used Bristol.

[wiredgeorge]

Originally Posted by chuckster57

Welcome to the forum

Depends on where the valve is located. At the tank opening is usually 3”, but gray water tanks may have a reducer for 1 1/2” valve.

You also need to know if they are Valterra or Bristol. Best to put eyes on the valves to be sure.

As a rule of thumb, 3” is black tank and 1 1/2” is gray tank. As I remember Keystone used Bristol.

Both my black and gray tank valves are 3" and the galley tank is 1 1/2".