3/4 in MPT x 3/4 in MPT Pipe Nipple - Poly

A close nipple is the short piece that joins two female-threaded parts with almost no gap between them: a valve straight onto a strainer, a tee onto a pump port, a fitting onto a tank outlet. This one has 3/4 inch male pipe thread on both ends and is molded in polypropylene, and it is the part that holds a compact sprayer manifold together.

Polypropylene won't rust or seize in a wet sprayer frame the way a steel nipple can, and it is light enough that it puts no extra strain on a plastic valve or strainer body. When an old nipple cracks at the hex or its threads give out, this is a quick, cheap swap that gets the line holding pressure again.

Highlights

• 3/4 inch male pipe thread on both ends
• Close length for tight, compact plumbing
• Polypropylene that won't rust
• Hex in the middle for a wrench
• Quick swap for a cracked or stripped nipple

What it's for

Sprayer plumbing is a chain of female-threaded parts: ball valves, strainers, tees, pump ports and tank outlets. A close nipple is how two of them meet without a length of pipe in between, which keeps the assembly short and stiff and keeps the valve right where you can reach it. It does the same job on a stock tank outlet or a transfer pump line.

It suits the sprayer owner rebuilding a valve or strainer assembly, the farm mechanic who keeps a box of fittings for spray season, and anyone plumbing a tank or pump who needs two threaded parts joined tight. Keep a couple on the shelf, because a short plastic fitting is one of the first parts to crack when a line freezes or gets bumped.

At a glance

How to use it

1. Shut off the pump, relieve the pressure and drain the line before you take anything apart.
2. Unscrew the old nipple and clean the female threads it came out of.
3. Wrap both ends of the new nipple with thread-seal tape, wrapping in the direction the threads tighten.
4. Thread one end in by hand, then thread the second part onto the other end by hand.
5. Snug each joint with a wrench on the hex and stop once it seals. Plastic threads crack when you overtighten them.
6. Run clean water through the line and check both joints for drips before you add any product.

Good to know

• Hold the nipple on its hex with one wrench while you tighten the part on the other end, so you don't twist the first joint loose.
• Drain the sprayer before a freeze. Water left in a short fitting can freeze and split it.
• Replace any nipple with chewed threads or a crack at the hex, even if it is not leaking yet.
• Pair it with thread-seal tape, a shutoff valve and hose barb fittings from the same aisle to finish a manifold.

About FIMCO

FIMCO Industries is headquartered in North Sioux City, South Dakota. For more than 60 years the company has built sprayers for every application, from home owner models to agricultural field sprayers.

Grab a spare before your next spray day, so one cracked fitting doesn't park the rig.