A 4 inch polyethylene bulkhead fitting for Norwesco tanks
Part number 62171 is Norwesco's 4 inch bulkhead fitting, moulded in polyethylene. It is the port that turns a plain tank wall into a connection: the body passes through a hole in the wall, a gasket seals it from the inside, and the threaded end on the outside takes your valve, flange adapter or pipe. Four inches is the big outlet, the one you specify to empty a large tank fast by gravity or to feed a high volume pump without starving it. The fitting is about 9 inches across its flange, weighs 4 lb, and ships in a small carton by UPS.
Ordering it with a tank, or adding a port to one you own? Call 866-418-1777 with the tank part number and the connection you are making, or get freight to your ZIP and add it to your cart above.
What to check before you buy
- The size. 4 inch. A 4 inch valve is a heavy piece of hardware, so plan the rest of the run around it rather than adapting down afterwards.
- The wall. A bulkhead fitting needs a flat area of wall at least as wide as its flange, about 9 inches here. On a small or tightly curved tank that flat area may not exist; tell us the tank model and we check.
- Factory or field. Buying a new Norwesco tank at the same time? Ask us to have the fitting installed at the plant. A 4 inch hole cut by hand is where most leaks on a big outlet start.
- The liquid. Polyethylene handles water, most fertilizers and many common chemicals. For anything aggressive, check the liquid against the material before you order.
Norwesco's drawing for this fitting is linked on this page under Technical Drawing. It shows the flange diameter and the hole size the wall needs.
Installing it
Dry-fit first. Set the fitting in the hole, turn it so the outside thread points where the pipe will run, and only then tighten the nut. Tighten by hand plus a quarter turn with a wrench; over-tightening distorts the gasket and is the usual cause of a weep. A 4 inch valve and the pipe behind it weigh enough to pull on the wall, so support them on their own close to the fitting. Fill with water the first time and check the joint inside and out. Keep a spare gasket on the shelf.
Shipping
This is a 4 lb part in a 9 by 9 by 9 inch carton and it travels by UPS from the nearest of Norwesco's plants. The listed price is before freight; the freight cost estimator gives the cost to your ZIP. Ordered with a tank, put both on the same order so the fitting is on the tank the day it is set.
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 Norwesco 62171.
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.
