![]() In knob release position the delivery line is connected to exhaust. The knob actuates the pressure graduating portion to increase, decrease or maintain graduated air pressure to a separate delivery line. With us, you will save money, time, trouble, and most important point is that you can sleep better. The H-4 Type CONTROLAIR Valves are knob operated 3-way pressure graduating valves. Warmly welcome you to come to China and visit us! ![]() We welcome the win-win cooperation relationship with the partners from any places in the world, each customer is our god and helper. They are versatile three- and four-way pressure regulating valves. ![]() We will continue to expand our range, and win more customers' trust with our better and better performance. H Controlair valves are a family of pneumatic pressure regulating, directional valves. Our products have been exported to 15 countries& areas around the world, 80% of our exsisting customers have done the business with us by more than 5 times, no one-off customer. The H Controlair® pressure control valves are extremely popular on oil and gas drilling and service rigs. THE H CONTROLAIR VALVES FROM BOSCH REXROTH CORPORATION BELONG TO THE TYPES OF PNEUMATIC PRESSURE REGULATING, DIRECTIONAL VALVES THAT CONTROL BOTH THE FLOW. All of our products are manufactured according to the API Standard, and we are authorized to use API monogram. Our main products are: pump spare parts, mud pumps&packages, DC/AC Motors, solid control equipments, power units, truck-mounted rigs, workover rigs, land rigs, drilling pipes and drilling tools etc. UPET OILFIELD EQUIPMENTS CO.,LTD is one of the most well-known suppliers for the oilfield equipments in China, was established in 2000, and now has grown up to a star company which is not big but very strong in this field with our persistant effort step by step in the past years.Our products refer to the whole areas of oilfields, from a very small spare part to a very big complete rig system.
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