BVEM11JB/M/0/2-X24 Hawei solenoid valve received overseas

BVEM11JB/M/0/2-X24 Hawei solenoid valve received overseas

Harvey BVEM11JB/M/0/2-X24 specification parameters

1、 Basic Information

Model: BVEM 11 JB/M/0/2-X24

Brand: HAWE (Germany)

Valve type: Two position four-way, spring reset, center closed zero leakage cone valve

Drive mode: DC24V wet electromagnet (IP65)

Installation method: Plate installation (compatible with BA series valve group/flange pump station)

2、 Pressure/flow rate

Maximum working pressure: 400 bar (full oil port pressure resistance)

Rated flow rate: 50 L/min

Short term peak flow rate: 70 L/min

Pressure holding performance: median closure, zero leakage (cone hard seal)

3、 Electrical parameters

Control voltage: DC 24V ± 10%

Coil resistance: about 28 Ω in cold state

Working mode: Short pulse commutation (200-500 ms), not suitable for long-term power on

Protection level: IP65 (waterproof and dustproof)

4、 Medium and temperature

Applicable medium: Mineral hydraulic oil (ISO VG 32-68)

Viscosity range: 10-68 mm ²/s

Oil temperature range: -20 ℃ to+80 ℃ (optimal 30-60 ℃)

Sealing material: NBR (nitrile rubber)/FKM (fluororubber)

Oil cleanliness: ISO 4406 18/15/12 (valve 10 μ m filtration)

5、 Mechanical and Installation

Valve core structure: Short stroke lifting cone valve core (quenched+ground sealing surface)

Installation posture: The electromagnet is vertically facing upwards (strictly prohibited from being horizontal)

Installation torque: Tighten diagonally evenly by 5-6 N · m

Weight: Approximately 2.8 kg

Interface specifications: P/A/B/T ports are all G1/4

6、 Performance characteristics

Zero leakage: Medium cone sealing, suitable for long-term pressure holding circuits

High frequency durability: wet electromagnet, good heat dissipation, long service life

Compact structure: short stroke, fast response (≤ 100 ms)

Full pressure tolerance: Each oil port can withstand a high pressure of 400 bar

7、 Model Definition (Quick Reference)

BVEM: BVE series, M-type installation

11: Specification 11, flow rate 50/70 L/min

JB: Two four-way, center closed

M/0/2: Basic valve plate, no intermediate module, 2-position interface

X24: DC24V Electromagnetic Magnet

Below is a list of general usage tips for Hawei HAWE solenoid valves (including BVEM/BVG/BVE series), which can be used directly on site according to seven modules: installation, electrical, medium, operation, maintenance, contraindications, and quick troubleshooting.

1、 Installation knowledge (determining lifespan and leakage)

Installation posture: The electromagnet is vertically facing upwards (horizontal/inverted is strictly prohibited) to avoid the valve core being stuck by gravity, poor reset, and increased leakage.

Correct flow direction: The arrow on the valve body must be aligned with the direction of oil flow and cannot be reversed.

Installation surface: The flatness of the installation surface of the plate valve is ≤ 0.02 mm, clean and free of burrs; Tighten diagonally evenly, with torque according to the model (such as BVEM 11:5-6 N · m), and do not over fracture the valve body.

Pipeline cleaning: Rinse the pipeline before installation (0.3 MPa low-pressure flushing) to remove iron filings, rust, and sealing residue; A 10 μ m filter must be installed in front of the valve.

Environment: IP65 dustproof and waterproof, avoiding long-term immersion, high temperature direct exposure, and strong corrosion; Reserve space for heat dissipation and disassembly.

Vibration prevention: Fixed/shock-absorbing pipes are added to prevent vibration transmission from causing looseness, leakage, and coil damage.

2、 Electrical knowledge (coils are most prone to damage)

Voltage strict matching: DC24V ± 10%. It is strictly prohibited to connect AC220/380 or the wrong voltage.

Coil resistance: about 28 Ω in cold state (BVEM 11), large deviation/infinity=coil damage.

Control mode: Short pulse commutation (200-500 ms), long-term power on is prohibited (coil temperature rise ≤ 50K, long-term power on overheating, magnetic attenuation, coil burning).

Wiring specification: PG9 waterproof joint, single ended grounding of shielding layer; Stay away from the frequency converter/power line (≥ 1 m) to prevent interference.

Insulation and grounding: the shell is reliably grounded; Strengthen insulation in humid/harsh environments to prevent electrical leakage and short circuits.

3、 Knowledge of media and oil temperature (key to zero leakage)

Medium: Mineral hydraulic oil ISO VG32-68; Prohibit water, emulsions, and high water content media (except for special seals).

Oil temperature: -20 ℃ to+80 ℃, with an optimal range of 30-60 ℃; >Accelerated seal aging and decrease in oil viscosity at 80 ℃; Preheat is required when<0 ℃ to prevent jamming.

Cleanliness: ISO 4406 18/15/12 (≈ NAS 7), contamination is the primary cause of jamming, internal leakage, and zero leakage failure.

Sealing material: standard NBR (nitrile rubber); FKM (fluororubber) is used for high temperature/special media.

4、 Startup and operation instructions (anti impact, anti jamming)

Before starting up: system pressure relief (accumulator oil discharge, pump unloading); Manually check the push rod of the electromagnet, gently press it smoothly without any jamming.

Low pressure flushing: ≤ 50 bar, jog and change direction 5-10 times, smooth operation, no abnormal noise, no leakage, then increase pressure.

Gradually increase the pressure: 50 → 100 → 200 → 400 bar (by model), hold for 3-5 minutes at each stage, and check for leaks/heating.

Key operating points:

Power loss: Neutral closure, A/B locking, zero leakage

Power on: Reverse direction (P → A, B → T)

Frequency: ≤ 30 times/minute, high-frequency enhanced cooling and filtration.

Shutdown: Release pressure first → Power off → Spring reset center closed; Long term shutdown dust protection, low-pressure flushing before the next startup.

5、 Daily maintenance tips (extending lifespan, reducing malfunctions)

Daily inspection: external leakage (no oil leakage in valve body/joint), coil temperature (≤ 80 ℃), and action (crisp and no jamming or abnormal noise).

Quarterly maintenance: Check wiring tightness, coil resistance, and filter differential pressure (replace filter element if>0.3 bar); Test the reversing response, and if it slows down, remove and wash the valve core.

Annual maintenance: Disassemble and clean the valve core (neutral cleaner, wire brush prohibited), replace seals (original factory), and check spring fatigue.

Long term shutdown: power off to relieve pressure, oil discharge to prevent dust; Low voltage no-load test run 5-10 times during reuse.

BVEM11JB/M/0/2-X24 Hawei solenoid valve received overseas