Knox Box Standpipe Lock 3" Female NH/NST Locking Cap Model:4047 (6.0 TPI x 3.623 OD) Three Velcro straps secure the

Three Velcro straps secure the contents and the pack holds up to 150 ft

Aluminum 2 1/2 inch NH (NST) female swivel pin lug x 2 1/2 inch NH (NST) male gate valve with non-rising stem

What is the cap made of and how durable is it

The male threaded side of this adapter will only connect to a 1 inch female National Pipe Tapered (NPT) thread

you probably need this plug

Knox Box Standpipe Lock 3" Female NH/NST Locking Cap Model:4047 (6.0 TPI x 3.623 OD) Three Velcro straps secure theThe Knox Standpipe Lock protects standpipes, fire and wall hydrants from accidental damage, vandalism, and physical attack. Since the Knox Standpipe Lock holds water pressure, it can be installed on hydrants. The Knox Standpipe Lock is available for 2. 5 connections with varying thread options and is operated with a Knox FDC Wrench controlled by the Fire Department. Protects dry and wet standpipe outlets in stairwells from vandalism Reduces