Hemco Industries manufactures the equipment needed to keep your projects running smoothly - and safely. In addition to fall protection, gangway systems, loading racks and loading arms, Hemco Industries also supplies a full line of MGM Flow Valves. Our line includes Threaded Excess Flow Valves, Back Pressure Valves, Flanged Flow Valves, Wafer Excess/Back Pressure Valves and much more. 

The Excess Flow Check Valve provides instant shutoff­ in the event of a hose break or line failure, preventing the release of hazardous or in‑flammable products to the area which can result in a disastrous fire or explosion and untold damage to personnel and equipment. When a line fails, an excessive amount of product is released in a matter of seconds. The MGM Excess Flow Check Valves protect against instances where the operator is unable to reach the shut-off­ due to either injury, or the whipping action of the hose. Once a leak is repaired the pressure in this system will automatically equalize across the valve and the valve will be ready for service without any maintenance required. Take the guess-work out of this situation with automation.

All LPG tank cars, LNG tank cars and Butane tank cars, chemical transport trucks, and loading/unloading stations are required by both state and federal regulatory bodies to have Excess Flow Check Valve installed. In addition, all LPG, LNG, Butane storage vessels used for domestic delivery and consumption are also required to have Excess Flow Valves installed.



Operation - Automatic

Our Valves are specifically designed to permit high flow, yet close instantly and automatically when the flow becomes excessive due to line failure or other reasons. Liquid can flow through the valve in either direction. However, the flow will be shut off in the direction indicated on the drawing in the event the volume through the check valve exceeds the predetermined customer-specified limit.


Construction - Rugged

The body of our valves are designed of all welded steel construction consisting of A-105 forged steel flanges and seamless cold drawn A-106 tubing, seal welded and hydrostatically tested at 750 PSI. Internal parts are of special steels and stainless steels to insure trouble free operation for a very long period of time.


Installation - Simple

Our full line of MFM Valves may be installed in any size line up to 4", horizontally, or vertically, with flow in either direction.

Hemco proudly offers an industry leading 5-year warranty on our galvanized carbon steel products.

Get a FREE quote on the Hemco Excess Flow Check Valve, just fill out the Request A Quote form and a product specialist will contact you shortly. You can always reach us by phone at 713-681-2426 or toll free at 877-394-3626.