Grant is exactly right about the cold & knocking it around. Last winter I was out in freezing weather and bumped the end into a rock. The PVC broke in the valve where the PVC is threaded in. I had to dremel two opposing slots in the broken piece and wedge a solid piece of metal in so I could unscrew it.
Just like one should not hunt with a shell ready to fire, one should not walk with pressure in the spud gun. I only pressurize when I am ready to launch the spud. 73, Gary KA1J > I stick to max 80psi which has a good safety factor vs the pipe rating > (4" @220psi in my launcher). Very cold weather and knocking it around > when brittle or anytime is certainly to be avoided. An alternative is > to buy schedule 80, McMaster sells sch 80 PVC in 5 foot lengths. The > pressure rating for 3" is 370psi and 4" 320psi. Then the end fittings > should also be sch 80. > > A friend once (young = stupid) made a firecracker out PVC pipe. Note > that PVC doesn't show on xrays, so small bits were still erupting from > his skin 20 years later. Fortunately no eye damage. > > Grant KZ1W > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
