Low Pressure Proportional Regulator(0-8bar)

Classification : Proportional Pressure Regulator

KAO LU ENTERPRISES CO.,LTD.

Country: Taiwan

Phone: +886-4-24874219

Fax: +886-4-24864269

Contact Person: Jerry Wu

Video Inquiry Now

Product Serial: QKL-B1T/QKL-B3-1/QKL-B3-1A

Low Pressure Proportional Regulator(0-8bar)
There are 3 different series of 0-8 bar proportional pressure regulator- low flow < 20L/min, high flow >500 L/min, and economic type high flow. The low flow version consists of two solenoid valves, one high-processing speed digital electronic board, and one pressure transducer. The high flow version’s construct is similar, but adding a volume booster. The economic type of proportional pressure regulator is the one where we offer a reasonable accuracy 0.5%, high speed, and economics type for customers requiring simple operations.

Features and Applications
QKL-B1T low flow electro pneumatic pressure regulator have selections of three output pressure range- 2 bar, 4 bar, 8 bar. With the 2 bar version, it is possible to customize the pressure range to lower value. This features ultra-high resolution of 0.0005 bar, ultra-high stability and quick response time. This electro pneumatic pressure regulator has been widely used in the microfluidics industry in world-leading US medical device manufacturer, and it is also popular amongst dispensing and dosing industry.

QKL-B3 is the high flow version of 8 bar electronic pressure regulator valve. Having an extra volume booster provides a higher flow to the application and allows dynamic working conditions. It offers a high accuracy of 0.1 – 0.25%, high repeatability, and flow rate of 1200 L/min. Many have used QKL-B3 to control pressure in a large closed tank applications encompass semi-conductor testing equipment, dry-process equipment, and manufacturing equipment.

QKL-B3-A is the economic high flow version of electronic pressure regulator valve where the customers have simple applications of pressure regulation. It features quick pressure switch time, high flow, and economic. There is a major application of this electro pneumatic pressure regulator in low pressure gas control in laser cutting machine.

Dome Loaded Regulator Types	Low Pressure Proportional Pressure Regulator	Comments
Air Pressure Ratio Regulator	2 bar – 10 bar selections	1: 20 ratio
Volume Booster	0 – 8 bar selections	From 1/2’’ to 2’’ port, 4200 L/min at 3 bar.
Steam Pressure	0 – 8 bar, higher pressure is also available.	Stainless steel material available. Up to 220∘C
Water Pressure	0 – 8 bar, high pressure is also available.	Fluid type can be pure water to slurry
Back Pressure Regulator	Requiring higher performance regulator, consult for customization.	Used for back pressure control or flow rate control

Features
◆ Small Size
◆ High Precision
◆ High Sensitivity
◆ Wide Pressure Range

Industrial application
◆ Laser Cutter
◆ Leak Tester
◆ Tension Control
◆ PET bottle molding machine
◆ Multi-Stage Pressure Control

Type	B1T			B3-1		B3-A
Input Signal	0-10V / 4-20mA/ RS485					0-10V / 4-20mA
Output Range	0-2bar (29 psi)	0-4bar (58 psi)	0-8bar (116psi)	0-4bar (58 psi)	0-8bar (116psi)	0-8bar (116 psi)
Suggesting Supply Pressure Max	3bar (43 psi)	5bar (73 psi)	9bar (131 psi)	5bar (73 psi)	9bar (131 psi)	9bar (131 psi)
Max working pressure	9 bar(131 psi)
Monitor Output	1-5V / 0-10V / 4-20mA					0-10V / 4-20mA
Power Supply	DC24V (≦4W)
Response	0.8S
Medium	Clean compressed air or with 5 μm filter
Repeatability	±0.1% F.S.			±0.25% F.S.		±0.5% F.S.
Hysteresis	±0.2% F.S.			±0.25% F.S.		±0.5% F.S.
Linearity	±0.3% F.S.					±0.5% F.S.
Accuracy	±0.3% F.S.					±0.5% F.S.
Flow Rate	4L/min @2bar	7L/min @4bar	13L/min @8bar	525L/min@4bar	1050L/min@8bar	1050L/min@8bar
Temp. Range(Operating)	0-70⁰C ( 32-158 ⁰F)
Port Size	G1/8"			G1/4"
Manifold Material	Aluminum
Electrical Connection	M12 Connector(2m)
Ingress Protection	IP 65
Life Cycle	Over 1 Billion Times
Weight	420 g			550 g		430 g

Series	Type		Input Signal		Monitor Output		Mounting Bracket		Pressure and Flow		Display Unit
QKL-	B1T	-	E	-	C	-	M	-	P8	-	U
	B1T: Low flow with internal feedback		**E: 0-10V		C:0-10V		M:M type		For B1T, B2T P2:0 - 2 bar, 8LPM P4:0 - 4 bar, 10LPM P8:0 - 8 bar, 20LPM		S:psi
	B2T: Low flow with external feedback		A: 4-20mA		A:4-20mA		L:L type				U:bar
	B3-1: High flow with internal feedback		R: RS485 Modbus		D:1-5V				For B3-1, B3-2 P4:0 - 4 bar, 320 LPM P8: 0 - 8 bar, 640 LPM
	B3-2: High flow with external feedback								For B3-1, B3-2 P4:0 - 4 bar, 320 LPM P8: 0 - 8 bar, 640 LPM
	*B3-A: High flow with internal feedback								For B3A P8:0 - 8 bar, 640 LPM

*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.

No.	Color	Function
1	Blue	24V DC Power (-) Command (-) Output monitor (-) 2^nd loop transducer 0 -10 V (-)
2	Brown	24V DC Power (+) 2^nd loop transducer 4 - 20 mA (+)
3	Black	Monitor output (+)
4	White	0-5 V Command (+) 0-10 V Command (+) 4-20 mA Command (+)
5	Gray	RS485(D-)
6	Green	2^nd loop transducer 0 -10 V (+) 2^nd loop transducer 4 - 20 mA (-)
7	-	-
8	Red	RS485(D+)

** Warning: Do not rotate the connection socket when connected, to avoid damage to the internal sensor.
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.