High capacity manifolds, all steel and stainless steel construction with Teflon O-rings on the stem. Due to Teflon sealing surfaces, these manifolds are rated for 500°F and 500# pressure. These manifolds have couplings welded on the inlet instead of a schedule 160 pipe. Cv rating for both ports is 25.0 (for the 875M), and 26.6 (for the 876M). Manifold weight is 12 lbs.