Off-Line By-Pass Type Filter

BK04 series

Specifications

Type: High Pressure By Pass Type
Medium: Micro fiber
Accuracy: 3 u
Filtration Area: 0.316 M2
Inlet Pressure P: 0.7 to 32 MPa
Outlet Back Pressure T<0.3MPa(differential indicator only) (Hydraulic Symbol)
Flow: 3 l/min Maximum
Temperature: -20~120 °C
Viscosity: 1~680 cSt
Trigger Pressure: 0.2 MPa
Weight: 2 Kg
Oil Ports: P-1/4 BSPT
Flow ≤ 2 l/min T-1/4 BSPT
Flow>2 l/min T-3/8 BSPT

Features & Benefit

Standard micro-glass-fiber media for long life and excellent system protection
New design prevents blockade on the Inlet port.
Differential pressure indicator is more reliable compared with pressure gauge.
Oil cake effect improves filter effectiveness.
Huge filtration area holds more dirts as much as conventional cylindrical paper basis design.
Long service life and robust appearance.
Change the oil box simply.

Instructions & Precautions

Suitable for petroleum oils, water-glycols, water-oil emulsions, and HWCF
Connect P port to the system primary pressure line.
With pressure gauge as indicator, direct T port to oil tank with hose length as short as possible.
The hose should not be less than 8mm inside diameter and be limited to 2 meter in length.
Filter with differential pressure indicator as an alarm device, T port should be directed to oil tank or
connected to the machine manifold block in which the drain pressure must be less than 0.3 MPa.
Replace oil filter box when pressure gauge is shown at 0.2 MPa or alarm device is triggered.
Disposal of the oil filter box according to environmental protection.

Filter Structure

Hydraulic Informations

Flow volume dissipation:
It has a flow volume loss by using of the By Pass type filter in the hydraulic system. Users must make sure that
there is enough flow for their system to work especially for very small pump flow.

Feeding of the incoming oil:
Oil to be fed to the filter is branched along the primary high pressure line located at the main pump outlet. It may

be branched at-
1. Downstream of the pump outlet

2. Main relief valve pressure detecting plug
3. Manifold block blind plug
Use a stop valve is optional for the filter as it allows for replacement of the oil box while the machine is in operation.

Return of the outgoing oil:
It is advised the returning oil directly at the oil tank in which minimum pressure exists. Alternatively, it may be

returned to-
1. Blind plug on the oil tank

2. Manifold block drain hole blind plug(not applicable
to filter with pressure gauge as indicator)

Indicator Information:

Electrical Type:
Output: Normal Open Type Contact
Contact Load: 10W / 100Vdc 0.5 A Max
Visual Indication: Red LED Emitter (Only for S4 & S5)
Voltage Supply: 24 - 36Vdc (Only for S4 & S5)
Trigger Differential Pressure: 0.18 - 0.2 Mpa
Reset Differential Pressure: 0.13Mpa
Ambient Temperature: -20°C - 120°C
Protection: Water and Mist
Connector: DIN43650 Plug

Visual Type:
Output Indication: Blue to Red
Trigger Differential Pressure: 0.18 - 0.2 Mpa
Reset Differential Pressure: Automatic Reset
Ambient Temperature: -20°C - 90°C
Protection: Water and Mist

Installation

Order Information

Filter Assembly: BK04-030-F-B-N-10-X-S* P

Oil Filter Box: SP01-030-F

Filtration Rating: 030 - 3um (other ratings please contacts us)
Filtration Medium: F - Micro glass Fiber
By Pass Valve: B - 0.25MPa
Seal Material: N - Buna ; V - Viton
Design Reference: 10
Flow Rate: X -1.5 l/min ; Y - 2 l/min ; Z -3 l/min (contact us beyond these ratings)
Alarm Indicator: S1 - Pressure gauge; S2 - Visual ; S3 - Electrical; S4- Electrical c/w LED(0V COM);
S5 - Electrical c/w LED(+24V COM)
Option: P- Gauge indicated blockage of flow regulator (For differential Alarm Indicator only)

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