Profile: Orion Couplings manufactures valve couplings, check valve couplings and tube couplings. Our couplings is simply pushed over the end of the tube & pressed firmly to the stop position & provides an effective leak-proof sealing. Our two way check valve couplings are designed for connecting hydraulic lines and are extensively used, where a variety of other fluids are involved. Our straight through couplings are designed without valves to provide the least resistance to fluid flow.