DL3B005 Worm Gear Actuator Lug Type Butterfly Valve No Pin
DL3B005 is a lug type butterfly valve with a worm gear actuator and no pin connection between disc and stem, designed for on-off and throttling service in water, low-pressure industrial, and heating pipelines. The lug body allows installation at the end of a pipe run, and the actuator provides reliable quarter-turn operation with reduced manual effort. The valve is part of a range covering DN10 to DN2600 and 0.05 to 4.0 MPa, with in-house design and production across over 600 models.
| Model Code | DL3B005 |
|---|---|
| Product Type | Worm Gear Actuator Lug type Butterfly Valve no pin |
| Category | Lug Type Butterfly Valves |
| Manufacturer | Tianjin MIC Valve Co., Ltd. |
| Size and Pressure Rating | Confirmed on quotation |
| Certification | ISO 9001 and ISO 14001 certified plant |
| Model | DL3B005 |
| Valve Type | Lug type butterfly valve with worm gear actuator |
| Connection | Lug, threaded hubs for bolting to pipe flanges |
| Operation | Quarter-turn, actuator or manual with worm gear |
| Series | DL3B005 lug butterfly valve series |
| Nominal Diameter Range | DN10 to DN2600 mm |
| Nominal Pressure Range | 0.05 to 4.0 MPa |
What This Model Gives You
- Lug body enables end-of-line or dead-end isolation where a wafer body cannot be used
- Worm gear actuator reduces operating torque and allows consistent operation across large diameters
- No pin connection allows free disc movement during cycling, reducing stress on the stem
- Quarter-turn operation with actuator provides precise control and position confirmation
- Part of a factory-designed programme certified to ISO 9001 and ISO 14001
- Built to cover DN10 to DN2600 with pressure ratings from 0.05 to 4.0 MPa
Problems It Removes
- Gate valves are too long and heavy for space-constrained installations at pipe ends
- Manual operation becomes difficult on large-diameter valves without actuation
- Pin connections in wafer valves can bind or wear under repeated cycling in high-duty service
- Lack of actuation leads to inconsistent operation and higher maintenance in remote locations
- Buyers need one supplier who can provide both the valve and actuator in a single order
Where It Is Installed
- Isolation of pipeline ends in water distribution systems where flanges are only on one side
- Throttling control in low-pressure heating circuits where manual operation is impractical
- Remote or high-elevation valve operation in industrial plants using actuated butterfly valves
- Replacement of gate valves in tight spaces where actuation and compact size are needed
- Integration into automated systems requiring consistent torque and position feedback
Buyers It Suits
- Plant engineers sourcing actuated butterfly valves for water and heating systems
- EPC contractors standardising on lug type valves with actuation for large projects
- Valve distributors stocking actuated butterfly valves across a wide range of sizes
- Facility operators needing remote or periodic operation of isolation valves
- Designers of pumping stations or heat exchanger skids requiring compact, actuated valves
How It Is Built
- Lug type body with threaded hubs for bolting to pipe flanges
- Worm gear actuator for quarter-turn operation with torque reduction
- No pin connection between disc and stem allowing free disc movement
- Quarter-turn stem operation compatible with actuator, lever, or gearbox
- Part of a DL3B series that continues through the larger nominal diameters
Material Selection
- Body, disc, stem, and seat materials are confirmed per order based on the medium and operating temperature
- Material selection follows the variants available in the DL3B lug series
- Material certificates are issued with the order upon request
How It Is Made
- Body castings inspected and machined on in-house fine machining equipment
- Disc and stem assembled with no pin connection for free movement
- Worm gear actuator mounted and aligned with the stem
- Valve assembled, cycled, and pressure tested before packing
- Marked, wrapped, and crated for container shipment from Tianjin
How It Is Checked
- Dimensional check of lug hole spacing and flange drilling before assembly
- Seat and shell tightness testing on the assembled valve
- Actuator torque and full quarter-turn travel verified on every unit
- Testing carried out on the 10 sets of imported inspection and testing equipment
- Records maintained under the ISO 9001 quality management system
Certificates Issued With This Valve
- ISO 9001 quality management system certification
- ISO 14001 environmental management system certification
Certification statements are limited to the management system certificates the factory actually holds. Product-level approvals for your market are confirmed before order.
What Can Be Changed
- Disc and seat variant selected for the medium and temperature on the buyer's line
- Lever, gearbox, or electric actuator fitted before shipment if required
- Flange drilling matched to the standard used on the buyer's pipework
- Private label marking and packing on OEM orders
- Mixed-diameter orders combined with other valves in one container
How It Compares With the Alternatives
| Lug type butterfly valve with pin | The pin connection provides direct torque transfer but can wear under high cycling; the no-pin version allows free disc movement and reduces stem stress |
|---|---|
| Wafer type butterfly valve with actuator | The wafer body requires flanges on both sides; the lug body allows end-of-line service and is suitable for dead-end isolation |
| Manual gate valve | The gate valve provides a full bore but is heavier, longer, and requires more effort to operate at large sizes |
| Ball valve with actuator | The ball valve offers tighter sealing at higher pressure but is more expensive and less suitable for throttling duty |
Installing and Operating This Valve
- Confirm the flange standard and bolt pattern on the pipe flange before ordering
- Ensure the pipe end is clean and free of debris before installing the valve
- Tighten the lug bolts evenly in a cross pattern to avoid distortion of the body
- Operate the actuator through a full quarter-turn to confirm free movement and correct position
- Do not use the lug body as a pipe end closure during pressure testing
- Cycle the valve periodically on lines that remain in one position for long periods
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Ballast cooling and service water isolation in compact machinery spaces.
How To Choose Between Wafer and Lug Butterfly Valves
The body style decides whether the valve can hold the line on its own. Here is how to pick without guessing.
DL3B005 Worm Gear Actuator Lug Type Butterfly Valve No Pin FAQ
What size and pressure rating is DL3B005?
It is a lug type butterfly valve with worm gear actuator. The nominal diameter and pressure rating are confirmed on request based on the buyer's line data, as the same model is offered in multiple variants.
Can this valve be used at the end of a pipe run?
Yes. The lug body allows installation at the end of a pipe run with flanges on one side only, unlike a wafer body which requires flanges on both sides.
Which materials are used for the body, disc, and seat?
Material selection depends on the medium and temperature on your line. We confirm the combination with the quotation and issue material certificates with the order on request.
Is the actuator fitted before shipment?
Yes. The worm gear actuator is mounted and tested before packing. It can be replaced with a lever, gearbox, or electric actuator if specified.
Do you supply the larger diameters in the same series?
Yes. The DL3B series continues through the larger nominal diameters, and our valve programme covers DN10 to DN2600 across all families.
What certification does the factory hold?
Tianjin MIC Valve Co., Ltd. is certified to the ISO 9001 quality management system and the ISO 14001 environmental management system.
How do I get a quotation?
Send the model, quantity, flange standard, and medium by WhatsApp or email and our sales engineers reply with a quotation and a confirmed specification sheet.
Get a Price for DL3B005 Worm Gear Actuator Lug Type Butterfly Valve No Pin
Tell us the quantity, flange standard and the medium on your line. You get a quotation with a confirmed specification sheet, not a catalogue page.