Heshka Oil holds an API 6A Mongram Certification. Heshka Oil LLC is a manufacturer of gate valves, back pressure valves, two way check valves, adjustable chokes, positive chokes, hydraulic drilling chokes, check valves, choke and kill manifolds, flanges, tees, crosses and much more. With over 50 years of combined industry experience, Heshkaoil.com is quickly becoming the premiere destination for customers to purchase valves and parts online. Here at Heshka, we take pride in the quality products we offer and the exceptional customer service we provide to our customers. Our goal is to have what you need, in stock, and ready to ship when you need it! "Quality and Precision Every Time"