Waste Valve sizes.

[TXscooterguy]

I need to replace the grey tank valve. I bought a 3 inch replacement. When I crawled under the RV, I found it was too large. The bolts on grey tank valve are 3 inches apart. The bolts on the black tank valve are 4 inches apart. Can anyone tell what the proper size is for the grey tank flush valve. Thanks.

[Jolvi]

Originally Posted by TXscooterguy

I need to replace the grey tank valve. I bought a 3 inch replacement. When I crawled under the RV, I found it was too large. The bolts on grey tank valve are 3 inches apart. The bolts on the black tank valve are 4 inches apart. Can anyone tell what the proper size is for the grey tank flush valve. Thanks.

Black tank is usually 3 inches the gray tanks are usually 1.5 inches.

[TXscooterguy]

I called the Valterra folks. Their valve with the 3 inch bolt pattern in a 2" inch valve. I ordered one. I'll report back when it's in.

[wazooz2424]

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