This tool offers a safe and convenient way to
loosen relief valves from a isolation device in a
tank without damaging any of the parts
involved. Fit it over the valve and isolation device,
tighten the nut, and the valve will loosen.
Why won't it budge?
The traditional way to loosen a relief valve from an isolation device involves using two spanners: one to unscrew the valve, and one to hold the isolation device in place. In an underground tank with limited space, this is close to impossible. Furthermore, some tank suppliers connect the valve and isolation device, then screw them into the tank together using the flats on the relief valve. The result of this is an over-tightened connection that takes almost superhuman strength to separate. Even if you do manage to force it open, there is a risk of accidentally turning the check valve and causing a leak.
An easy solution
The relief valve cracking tool handily solves all of these problems. All it requires is an 18 mm ratchet spanner to allow you to remove even the most stubborn valves with no risk of leaks. We have cracking tools available for all common relief valve and isolation device combinations, and some even fit a wide range of combinations.
Loosening the valve is only the first step of relief valve exchange! Once the cracking tool has done its job, we recommend that you use the SafeSwap to safely remove the valve entirely.
- Loosens stubborn valves without moving the isolation device
- Easy to use, even in underground tanks
- No damage to valve or isolation device
- Available for most commonly used valves
Instruction manual: Pressure relief valve cracking tool
Our illustrated manual gives you detailed step-by-step
instructions about how to use the cracking tool.
Product sheet: Pressure relief valve cracking tool
Download this sheet for a simple one-page
description of the cracking tool, as well as an
overview of available sizes.
