A 6 inch CPVC bolted double flanged fitting with a Viton gasket and stainless encapsulated bolts
Part number 34700765 is Snyder's 6 inch double flanged tank fitting in CPVC, bolted, with a Viton gasket and stainless steel encapsulated bolts. A double flanged fitting clamps the tank wall between two flanges with a ring of bolts, which makes it the fitting for a large opening low in a tank where the wall carries the most load. This is the version for the harder liquids: CPVC takes more heat than plain PVC, Viton is the gasket chosen when EPDM will not hold up, and the stainless bolts are encapsulated in plastic so no bare metal touches the contents. At 6 inches it is a main outlet or a large drain. The fitting weighs 5 lb and ships by UPS.
Specifying the outlet for a warm or aggressive liquid? Call 866-418-1777 with the tank part number and the chemistry, or add it to your cart above.
What to check before you buy
- The size. 6 inch. The valve, flange adapter and pipe downstream have to match, so settle the size first and buy the rest to suit.
- The liquid. CPVC body, Viton gasket, stainless under the encapsulation. Check the liquid against the body and the gasket in our chemical compatibility guide. If EPDM is the better gasket for your liquid, Snyder makes that version too and we can swap it on the order.
- The wall. The flange needs a flat, continuous area of wall at least as wide as itself, with the bolt holes clear of any rib or corner. Snyder's drawing, linked on this page under Technical Drawing, shows the flange, the hole and the bolt pattern.
- Access. Somebody has to reach the inside flange to install it. On a closed tank that means a manway big enough to work through; tell us the tank and we confirm it.
Installing it
Dry-fit the two flanges with the gasket between before you drill a single bolt hole, and turn the assembly so the outside face lines up with the pipe run. Pull the bolts up evenly in a cross pattern, a little at a time, so the gasket is squeezed flat rather than pinched on one side. Keep a slipping wrench off the encapsulation; the plastic jacket is what keeps the liquid off the metal. Support the valve and the first length of pipe on their own so the wall carries liquid, not hardware. Fill with water the first time and look at the joint before anything else goes in.
Shipping
A 5 lb fitting in a 10 by 10 by 10 inch carton, by UPS from Snyder's Lincoln, Nebraska plant when ordered loose. Fittings installed on a tank at the factory ship with the tank from that tank's plant. The listed price is before freight; the freight cost estimator gives the cost to your ZIP. Ordering it with a tank? Put both on one order, or request a written quote for the whole connection.
Freight and documents
LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 34700765.
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
