Introduction
MDV-T Dual line metering valve is a modular plate-type metering valve independently developed by WEIDUN, specially designed for dual-line centralized grease lubrication systems. With a nominal pressure up to 31.5MPa, it features split combined plate structure, supporting 6–12 lubrication outlets, and multiple single-point displacement options to match different lubrication demands of friction points.
This product has excellent rust resistance, and optional indicator rod / proximity switch monitoring to realize real-time tracking of piston working status. It is not approved for explosive atmospheres or hazardous locations, widely applied in mining machinery, construction equipment, port machinery, metallurgical equipment and automated factory production lines. The modular combination design allows flexible on-site matching without custom valve blocks, greatly reducing inventory and delivery cycle costs.
Technical Data
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Technical Data |
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Description |
Dual line metering valve |
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Working Pressure |
31.5 MPa |
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Starting Pressure |
≤1.5 MPa |
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Displacement |
0.2 / 0.4 / 0.8 / 1.0 / 1.6 ml/cy |
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Inlet Thread |
G1/8 |
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Outlet Thread |
M10×1 |
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Matching Outlet Hose Diameter |
Φ6 mm / Φ8 mm optional |
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Working Temperature |
-40℃ ~ 70℃ |
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Number of Outlets |
6 / 8 / 10 / 12 PCS |
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Monitoring Configuration |
Optional Indicator Rod / Proximity Switch / Without Monitoring |
Features/Equipment Characteristics
1. Modular Plate Combination Design, Flexible Customization
Adopt split piston plate structure, users can freely select plates with different displacement specifications according to the grease demand of each lubrication point, and combine the number of outlets from 6 to 12 as required. No integral valve block customization needed, effectively lower spare parts inventory pressure.
2. High Pressure Resistance & Wide Temperature Adaptability
Rated pressure reaches 31.5MPa, stable operation under heavy back pressure; adapt to -40℃ low temperature cold region construction and 70℃ high-temperature factory working conditions, suitable for all-year-round heavy-duty industrial equipment.
3. Dual Monitoring Options for Intelligent Operation Feedback
Each metering unit supports two monitoring schemes: visual indicator rod for on-site manual inspection of piston reciprocating action; optional proximity switch to output electrical signals, which can be connected to PLC to automatically alarm pipeline blockage and oil supply faults.
4. Good Rust Resistance & Long Service Life
Optimized material and surface treatment process with rust-proof performance, adapt to humid, dusty outdoor working environments such as ports and mines, reducing component corrosion failure rate.
5. Precise Metering & Stable Dual-line Grease Delivery
Professional dual-line reversing piston structure ensures accurate and consistent fixed grease output per cycle for each outlet, avoiding insufficient or excessive lubrication, and extending the service life of bearings and mechanical friction pairs.
6. Easy Disassembly & Low Maintenance Cost
Split plate assembly structure, only need to remove single piston plate for cleaning when blocked, no need to replace the whole distributor. Universal wearing parts such as O-rings, copper washers and pistons, low replacement cost and short maintenance downtime.
Our Advantages
1. Flexible Modular Matching, Strong On-site Adjustment Capacity
6–12 outlets optional, multiple displacement specifications for free combination; plate splicing structure simplifies pipeline layout, and the outlet flow can be adjusted by replacing piston plates on site without reordering new valve blocks.
2. Low Leakage Risk & Stable Sealing Performance
Uniform screw torque locking between plates, equipped with standard O-ring sealing gaskets to prevent inter-plate grease leakage; standard ferrule hose joints for tight pipeline connection, reducing external leakage points.
3. Dual Monitoring Solutions to Avoid Equipment Damage
Visual indicator rod realizes real-time on-site inspection; electrical proximity switch supports remote automatic monitoring, timely finding single-point blockage failure to prevent long-term lack of lubrication and component wear.
4. Standard Lubricant Usage Specification to Protect Components
Explicitly prohibit grease containing graphite, supramoly, calcium carbonate, calcium hydroxide and graphene. Hard solid particles will scratch pistons and seals, easily causing jamming failure; equipment using graphene grease will have its warranty period halved.
FAQ
Q1: Can MDV-T adjust the single-point grease output volume?
A1: Yes. The discharge volume of each outlet is determined by the piston plate. You only need to replace the piston plate with different displacement specifications to change the single-point oil supply volume, no need to replace the entire distributor body.
Q2: When commissioning for the first time, inlet has pressure but no grease flows out of outlets, how to troubleshoot?
A2: 1. Check whether the inlet connector has built-in check valve, replace unobstructed standard joint;
2. Verify the outlet check valve is installed in correct direction;
3. Disassemble the end screw plug and push stuck piston to the bottom for exhaust;
4. Disassemble piston plate to clean dirt and cured grease causing piston jamming;
5. Do not seal both outlets of one metering unit with screw plugs at the same time.
Q3: What lubricants are forbidden for MDV-T distributor?
A3: Grease mixed with graphite, supramoly, calcium carbonate, calcium hydroxide or graphene is prohibited. Hard particles will accelerate piston and seal abrasion, leading to frequent blockage; products using graphene-containing grease only enjoy half the original warranty period.
Q4: What is the regular maintenance cycle?
A4: Daily observe the movement of indicator rod to judge normal oil supply; clean internal pistons and replace aging O-rings every 3–6 months according to dust, temperature and humidity of working conditions. When replacing different types of grease, fully disassemble and clean all plates to avoid grease mixing failure.
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