This series is a complete closed loop servo system consisting of two solenoid valves, an internal pressuretransducer, and electronic controls. Based on analog signal, the pressure is controlled by two solenoidvalves to maintain precise pressure; one valve functions as inlet control, the other as exhaust. The pressureoutput is measured by an internal or an external feedback pressure transducer that provides a feedbacksignal to the electronic controls. The regulator is suitable for industries that require precise pressurechanges at any time and monitor pressure values. Available with 3 selections of input signal: 0-10VDC,4-20mA, or RS485 Modbus. Monitor signal can be chosen from 1-5V, 0-10V, or 4-20mA. Internal pressuretransducer comes with B1T, B3-1, and B3-1A series, whereas B2T and B3-2 uses an external pressuretransducer for feedback (ideal for when the vessel is distant away from the regulator).
All our products have CE, SGS, RoHS certification with ISO13485 quality system.
*B3-A is an economic type, only with 8 bar. B3-A does not have RS485 modbus interface and does not have 1-5V monitor output.
** For Command Signal type 0-10V, the minimum driving current is 50mA.
★Please consult us for customized pressure range.
The wiring diagram shows from top view.
Product Precautions
Installation
The valve can be mounted in any position. For very low pressure control, works best when mounted upright.
And Ensure a minimum closed end volume of 40c.c. to allow proper functioning.
※Preparation Before Piping
Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to remove chips, cutting oil and other debris from inside the pipe.
Wrapping of Sealant Tape
When screwing together pipes and fittings, etc., be certain that chips from the pipe threads and sealing material do not get inside the piping. When sealant tape is used, leave 1.5 to 2 thread ridges exposed at the end of the threads.
Operating Environment
- Do not operate in locations having an atmosphere of corrosive gases, chemicals, sea water, or where there will be contact with the same.
- In locations where the body is exposed to water, steam, dust, etc., there is a possibility that moisture or dust could enter the body through the EXH port, solenoid valve EXH port and/or built-in regulator EXH port, thereby causing problems.
- In locations which receive direct sunlight, provide a protective cover etc.
- In locations near heat sources, block off any radiated heat.
- Employ suitable protective measures in locations where there is contact with water droplets, oil or welding spatter, etc.
Air Supply
- Compressed air, nitrogen, oxygen or argon can be used as a fluid.
- Do not use compressed air which includes chemicals, synthetic oils containing organic solvents, salt, or corrosive gases, etc., as this can cause damage or malfunction.
- If oxygen is used as the fluid, it can lead to serious and unforeseen risks. However, it is possible to manage and control the risk of hazards and economic loss. In order to use the product safely, it should only be handled by personnel with appropriate knowledge, with support from a suitably qualified specialist.
- Oxygen gas increases the susceptibility of substances to burning; Oxygen gas can be ignited by frictional heat and static electricity. If oxygen is ignited, the metal and seal materials burn. Therefore, flush the piping thoroughly and mount a suitable filter to prevent foreign matter such as metal powder and dust from entering the product.
- Take safety measures by installing safety devices (e.g. a circuit that stops the supply of oxygen gas) to prevent fire and explosion in the event of failure, taking flameproof safety standards into consideration.
- Since there are some exhaust ports on the product, connect the piping in order to exhaust oxygen. Do not block the exhaust port.
Warranty
KaoLu Ent. Co. Ltd. products are warranted to the original purchaser only against defects in material or workmanship for 6 months from the date of manufacture. The extent of KaoLu’s liability under this warranty is limited to repair or replacement of the defective unit at KaoLu’s option. KaoLu shall have no liability under this warranty where improper installation or filtration occurred.
