48” Flexible non-conductive, fire rated tubing & attachment couplings.
1/4” Valve, fittings, gaskets, & washers.
External weather resistant, lockable valve box with stainless steel hardware.
Hole saw & mounting equipment.
Step by step instructions.
Transformer Valve Extensions
Your Solution for NFPA 70E
The Safest way to sample transformer oil
Fire Rated & Non-Conductive
Primary & Secondary Voltage Applications
Three kit style packages available
Extend-O-Valve kits come standard with 48” hose and standard equipment that fits all transformers manufactured since 1948. If the transformer does not have a sample port and/or additional equipment is required, please provide all additional information requested by completing the transformer identification form below.