OTECO supplies replacement diaphragms and parts for the Hydril and Mattco 10 and 20 gallon pulsation dampeners. These diaphragms are molded in one piece and are available in 1500 psi, 3000 psi, and 5000 psi ratings. They also have a metal insert molded into the bottom to prevent extrusion into the bottom flange connection. Stabilizers, plates, screws, lock washers, bottom plate gaskets, charging valves, and pressure gauges (0-6000 psi) are also available.