Campbell Manufacturing 3-4" Red Brass Check Valve CV-3TLF This reliable device can detect

This reliable device can detect moisture in wood and construction materials

wood and composite materials

Additionally

Only tool of its kind that can be turned with a 3/8" or 1/2" ratchet wrench and extension from either end

without leaving a film or sticky residue

Campbell Manufacturing 3-4" Red Brass Check Valve CV-3TLF This reliable device can detectThe Campbell Manufacturing Red Brass Check Valve is used for water, oil and gas. Machined exterior. Neoprene O ring. Non corroding Delrin stem guide. Stainless steel springs. Certified red brass castings. This product contains less than 0. 25% weighted average lead content on wetted surfaces. Lead free version.