Watts Swing Check Valve

[M1687]

Hi,
I have two Watts Swing check valves (1 1/2" sweat) on my boiler system that are leaking between the main body and the top portion of the valve. They don't sell gaskets and I want to reseal them before winter. Any advice? Do I make my own gasket and seal with rtv? My boiler system runs on the higher pressure side (20 psi +/-) due to one of the zones being inactive and has hvac antifreeze in it. Thanks.

 

[Plumber69]

What part take pic

 

[Sponsor]

 

[Plumber69]

Hi,
I have two Watts Swing check valves (1 1/2" sweat) on my boiler system that are leaking between the main body and the top portion of the valve. They don't sell gaskets and I want to reseal them before winter. Any advice? Do I make my own gasket and seal with rtv? My boiler system runs on the higher pressure side (20 psi +/-) due to one of the zones being inactive and has hvac antifreeze in it. Thanks.

If it's the threaded nut part thephlon works

 

[M1687]

If it's the threaded nut part thephlon works

So remove top of body and coat with teflon?

 

[M1687]

Any more responses?
I don't see Watt's products around anymore like I used to. The local HVAC store (Ferguson) wants $226. a piece for the Nibco version. I can practically manufacture these myself for that price.

 

[Reach4]

I don't see Watt's products around anymore like I used to

See if http://www.watts.com/pages/_products_details.asp?pid=683 does anything for you. Probably not. I don't know anything about these.

Are there markings on the other side of the casting?