Basic Info.
Trademark
REXROTH or OEM brand
Origin
China, Zhangjiagang
Product Description
The 4/2-and 4/3-way directly operated
proportional directional valves,
Spool with electrical position feedback.
Type BFWE and BFWNE
Nominal size 6 and 10
Component series 2X
Maximum operating pressure 315bar
Maximum flow 80L/min DN 6 (DN6)
Maximum flow 80L/min DN 10 (DN1O)
1) To have a long service life for the component, we strongly suggest the fluid should be well-filtered frequently.
2) Please comply with European Standards DIN EN 563 and DIN EN 982 must be taken into account!
3) With HOYEA Machinery Manufacture CO. LTD. control electronics
The 4/2-way and 4)3-way proportional directional valves are designed as direct-operated components for subplate mounting. They are actuated by means of proportional solenoid with central removable coil. The solenoid are controlled either by external control electronics (type BFWE) or Integrated control electronics
(type BFWNE)
Design:
The valves basically consist of:
—Body (1) with mounting surface
Control spool (2) with compression
springs (3 and 4)
Solenoids (5 and 6) with central coil
Optional integrated electronics (7)
Function:
—When solenoids (5 and 6) do not work, the
control spool (2)is held in the central
position by compression springs (3 and 4)
—Direct actuation 01 the control spool (2) by
energising a proportional
solenoid E.g. When the solenoid 'b" power
is on (6)
— The control spool (2) is moved to the left
in proportion to the electrical input signal
—connection from P to A and B to T via orifice-like
Cross sections with progressive flow characteristics
— When the solenoid power is off (6)
The control spool (2) is returned to the
central position by compression spring (3)
In theory, the function of this valve is the same to the valve
with 3 positions. However, the valves with 2 positions are
only fitted with solenoid "a" (5) Instead of the 2nd
proportional solenoid a plug
(11)is fitted with a cover for DN 6 or for DN 10(11).
Note for type BFW-02...2XI/...:
Draining of tank line is to be avoided. With the
appropriate installation conditions, a back pressure
valve is to be installed (back pressure approx 2 bar).
Com. Value: Positive command value (O to 10 V or 12 to 20 mA) at D and reference potential to E causes flow from P to A and B to T. Negative command value (O to 10 V or l2 to 4 mA) at D and reference
potential to E causes flow from P to Band A to T. For valves with a solenoid on side "a (spool variants EA and WA) a positive command value at 0 and reference potential to E (NS 6: 4 to 20 mA and NS 10: l2to2OmA)causes flow from P to B and A to T.
Actual value The actual value (0—1OV or l2mA) on the F.C enables the connection from port P to port A.
Connection cable Recommendation
-up to 25 m cable length type LiYCY 5 x 0.75 mm
-up to 50 m cable length type LiYCY 5 x 1 .0mm External diameter 6.5 to 11 mm Connect screen to PE only on the supply side
Introductions:
The electrical signal launched from controlled amplifier (e.g.actual value) must not be used for the safety protection of the switch device.
1.Contacts PE should be linked to the
low-temperature subject and valve body
2 .Ramp time could be adjustable within the
scope O—02 5s outside, as well as Tup and Tdown
3.Zero point outside is adjustable.
Address:
No 22, Jianggong Road Nnafeng Town, Suzhou, Jiangsu, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Electrical & Electronics, Industrial Equipment & Components, Manufacturing & Processing Machinery
Management System Certification:
ISO 9001
Company Introduction:
Zhang Jiagang Rexroth Hydraulics & Pneumatics Co, Ltd which had been known as Zhang Jiagang Guosen Hydraulics Technology Co, Ltd was founded in 2014. It is located in Zhang Jiagang, Suzhou-Wuxi-Changzhou agglomeration in the Yangtze River Delta. We specialize in producing and selling all kinds of pneumatic components, hydraulic components and even complete sets of the equipment. Those hydraulic stations and cylinders which were produced by our company have been widely applied in construction machinery, special purpose vehicles, metallurgy, shipbuilding and etc. We have kept good cooperating relationship with several well-known domestic enterprises. We have passed ISO 9001 certification. Being experienced in manufacturing hydraulic and pneumatic equipments makes us have the ability to meet the demand of high quality and high-level stability. In addition, our company sells solenoid valves, impeller-type pumps and other components as a selling agent of YUKEN.
As a professional and reliable company, we offer perfect technology consulting service. We will try our best to be extremely professional when answering the questions and offering help. People foremost, quality first, technology leading and integrity is what we pursuit all the time. We are looking forward to making more friends, cooperating with each other for a better future!