Use
A21H type is suitable for the working temperatureof 200℃or less medium such as air, ammonia,liquefied petroleum gas (LPG) of equipment andpiping. A21W type is suitable for the workingtemperature of 200℃ or less corrosive gas orliquid equipment and piping. A21F type is suitable
for the working temperature of 200℃ or lessliquefied petroleum gas, liquefied petroleum gas(LPG) and other equipment and piping, as theoverpressure protection device.

Main connection size

Our company OUTER ELECTRONIC TECHNOLOGY (HK) LIMITED focus is on steel mills, power plants, cement plant , chemicals, paper, CNC numerical control machine tool industry system spare parts! Main products: DCS system cards, spares of turbine ,generator ,boiler ,blower , coal mill , motor , transformer , pump, valve , air compressor , meters and Instruments , cable and wire , actuator , circuit Breaker , gear reducer, coal feeder and flame , servo controllers, etc.

we are the major partner with leading companies in China including SEC, Dongfang and HEC. We have long-term business relationships with world majors like Samra , Vedanta, and PT PJB and so on .

We are upholding to creating as a leading player in the worldwide energy and machinery industry! You are welcome to contact us for more information!

Stand in customers’ situation to grasp the quality, coupled with our genuine service, we attain deep trust and recognition from our clients.
 

Hontai business scope include:

Export products :

- turbine

- generator

- boiler

- blower

- coal mill

- Flame ignition & spares 

- Actuator 

- Motor 

- Reducer 

- Valve 

- ESP 

- Coal feeder 

- Electric panel 

- Instrument & indicator 

- Other industry spares for replace : relay , fuse , transformer , solenoid value , 

limited switch , transducer , sensor , thyristor and so on .

Import products :

- Coconut fiber

- Imported brand IC 

- EPRO sensor