4" Camlock Safety Locks (2-Pack) Female Size_2 1/2 Inch The female threaded side of

The female threaded side of this adapter will only connect to a 1 1/4 inch male National Pipe Tapered (NPT) or National Pipe Straight Hose (NPSH) thread

Type "D" brass 4 inch female camlock (Cam & Groove) coupler to 4 inch female NPT threads

This unit is a multipurpose extinguishing agent that is suitable for class A

Protects against both backsiphonage and backpressure of contaminated water into the potable water supply

One pair needed per hydrant

4" Camlock Safety Locks (2-Pack) Female Size_2 1/2 Inch The female threaded side ofSafety Locks Eliminate Spills. Visually Confirm Ear Locking Camlock safety locks to prevent cam and groove coupler handles or ears from opening when connected. Easy to install and easy to remove, heavy duty clip that clicks into place over the ears.