Click to expand Tap to zoom Valve Wrench - Special design - for fire extinguishers - M131-297-000 Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Valve wrench for valves with handles (for fire extinguishers).