SIL certificate Single Acting Scotch Yoke Pneumatic Actuator for valves​

► Company

Flowan has a facilitator of leading pneumatic actuator and sets of valve which has many years experience of R & D, production, sales and service. We have the first-class R & D team, improved and effective management, quality control system and professional sales and service team.

After years of development, Flowan imported and absorbed abroad advanced R& D and design concept, at the same time, we combined with domestic actual market demand and enterprise years of service experience, and we make innovations and have the courage to surpass, forming the unique R & D innovations mode of Flowan. All these make Flowan pneumatic actuator, positioner and other aspects with longer life, better quality and more advanced function than other companies.In the international market, Flowan products and services obtained praise and recognition of American and Japanese high-end customers and the long-term friendly cooperation with the high-end ,improved the management and quality control level greatly.

► The use of the pneumatic actuator with hydraulic Manual Override

1) When adjust or run(automatically) the pneumatic actuator of JDP heavy-duty pneumatic actuator with hydraulic manual override, the oil drain handle should in the relaxed state, others are same with the related programs of standard pneumatic mechanism.

2)Hand operating steps:

a) Cut off the air supply, in order to avoid the damage of the components caused by the impact(made from the repeated air supply and no air supply) on the pneumatic actuator;

b) When the oil drain handle is in a relaxed state, lift up and put down the handle ten times or more times to exhaust the air in the oil path;

c) Lock the oil drain handle, enter the handle operating situation. By lift up and put down the handle to make the pneumatic actuator to get the regulated position.

Note: The hydraulic pressure is large when conduct hand operation, please do not operate to the totally open position as far as possible in order to avoid the damage of the inner components of the pneumatic actuator!

3)Recovery automatic control program:

a)Release the oil drain handle, to make the pneumatic actuator to back to the closed position under the spring force;

b)Connect the control path;

c)Connect the air supply, recovery the automatic control.

4)Attention of hydraulic oil filling and treatment

a)Must use the corresponding hydraulic oil according to the temperature of the working site;

Working temperature	Types of hydraulic oil	Remark
-10℃～40℃	HM type wear-resistant hydraulic oil
≥-30℃	HV type low temperature hydraulic oil	Could not use with the HS type hydraulic oil
≤-30℃	HS type low temperature hydraulic oil	Could not use with the HV type hydraulic oil

b) The fuel tank has marked rated capability, filling quantity of the hydraulic oil tank capacity should be not less than 90%, and should periodically check the oil quantity;

c)The replaced hydraulic oil should be handed over to the relevant institution reclaim or treat according to local regulations or other stipulates.

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