Because of the taper, a pipe can only screw into a pipe fitting a little distance before it jams.
Pipe Fitting - Union, O-Ring, Female, Tapped, High Pressure
G3/4 Copper Union Fitting with Sweat Solder Joint to Male Threaded
Pipe Union Fitting 7 Types Of Union And Installation
PVC Socket Union - Waterworks
Brass Pipe Union Connector Coupling 1PT Fitting ,With Female
This is a lead free union for connecting, or extending, pipes in applications with a maximum pressure of 125 lbs. In particular, this fitting is made
Supply Giant DDNV0001 1 No Lead Copper Union Fitting with Sweat to Male Threaded Connects
Pipe Union Fitting
Marine Plumbing Fittings & Hose Fittings by Midland Metals
1/4 NPT Female Solid Brass Pipe Union Adapter Fitting WOG Solid
UNION 2 Class 3000 (3M) Threaded NPT Forged Steel A105N Pipe
Find Malleable Iron Pipe Union: 1-1/2 Fitting at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years
Made in USA - Malleable Iron Pipe Union: 1-1/2″ Fitting - 36995710
2 PVC Union SKT X MIP With O-Ring - Praher Plastics - ACC-200903
Galvanized Pipe Fittings - 150# 2 Union (Brass Seat) NPT
High Pressure 3000 PSI ANSI B16.11 Threaded Union Fitting
Compression Fittings Union Couplings – Reliable Fluid Systems
