Cart Pressure Valves Here you can find different pressure valves used in plumbing and heating systems. Showing all 2 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Danfoss STV-NPT25 1″ Flow Set Valve (Threaded) $236.00 Add to cart Taco 3196 3/4″ Female NPT Differential Bypass Valve $120.20 Add to cart