DLA001 Lug Butterfly Valve Vulcanized Seat and Bare Shaft
DLA001 is a lug type butterfly valve with a vulcanized seat and bare shaft, designed for on-off and throttling service in water, low-pressure industrial lines, and similar applications. The lug body allows installation at the end of a pipe run or in dead-end service, where a wafer body cannot be used. The bare shaft stem enables direct attachment of levers, gearboxes, or actuators without additional components.
| Model Code | DLA001 |
|---|---|
| Product Type | Lug Butterfly Valve[Vulcanized Seat and Bare Shaft] |
| 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 | DLA001 |
| Valve Type | Lug type butterfly valve with vulcanized seat and bare shaft |
| Connection | Lug body with threaded holes for through bolts |
| Operation | Quarter-turn, lever, gearbox or actuator |
| Seat Material | Vulcanized seat |
| Stem Type | Bare shaft |
| Series | DLA001 lug butterfly valve series |
What This Model Gives You
- Lug body allows installation at the end of a pipe run or in dead-end service
- Vulcanized seat provides reliable bidirectional sealing in water and low-pressure media
- Bare shaft stem simplifies actuator or lever mounting without extra fittings
- Quarter-turn operation enables fast and clear valve position indication
- Part of a valve programme covering DN10 to DN2600 and 0.05 to 4.0 MPa
- Built under ISO 9001 and ISO 14001 certified production systems
Problems It Removes
- Wafer butterfly valves cannot be used at the end of a pipe run due to lack of clamping flanges on both sides
- Older valves with complex shafts require extra fittings for actuator mounting
- Lack of standard lug body options in low-pressure applications leads to custom builds
- Inconsistent seat materials cause leaks in water and low-pressure services over time
- Buyers need a single supplier for both small and large diameter lug valves in one series
Where It Is Installed
- End-of-line isolation in water supply and drainage systems where flanges are only on one side
- Dead-end service in heating and cooling circuits where the valve must seal against one open end
- Throttling control in low-pressure process lines in chemical and pharmaceutical plants
- Isolation on fire protection risers where the valve is installed at the end of a branch
- Maintenance access points in power plant auxiliary systems requiring end-of-line shut-off
Buyers It Suits
- Water utility engineers specifying end-of-line valves for municipal distribution
- HVAC and fire protection contractors needing valves for dead-end branch isolation
- Plant maintenance teams replacing older valves in tight or constrained piping layouts
- EPC buyers sourcing a lug butterfly range that covers small to large diameters
- Valve distributors stocking a reliable lug butterfly option for industrial and municipal projects
How It Is Built
- Lug body with threaded holes for through bolts on both ends
- Vulcanized seat providing bidirectional sealing
- Bare shaft stem for direct actuator or lever attachment
- Quarter-turn operation for manual, gearbox, or actuated control
- Part of the DLA series that continues through DN10 to DN2600
- Designed for medium- and low-pressure service up to 4.0 MPa
Material Selection
- Body, disc, stem, and seat materials are confirmed per order based on the buyer's medium and temperature
- Vulcanized seat is standard; other seat variants are available within the DLA 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 bare shaft configuration
- Vulcanized seat fitted and aligned for consistent closure
- 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 pattern before assembly
- Seat and shell tightness tested on the assembled valve
- Operating torque and full quarter-turn travel verified on every unit
- Testing performed 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
- Seat material variant selected based on the buyer's medium and temperature
- Lever, gearbox, pneumatic or electric actuator fitted before shipment
- Lug hole drilling matched to the buyer's flange standard
- Private label marking and packaging available on OEM orders
- Mixed-diameter orders combined with other valves in one container
How It Compares With the Alternatives
| Wafer type butterfly valve | The wafer body requires flanges on both sides; the lug body can be used at the end of a pipe run |
|---|---|
| Lug butterfly valve with shaft extension | The bare shaft version reduces component count and simplifies actuator mounting |
| Gate valve at same diameter | The gate valve offers a full bore but is heavier and longer; the lug butterfly is more compact and lighter |
| Ball valve at DN50 | A ball valve seals tighter at higher pressure but costs more and requires more space for actuator clearance |
Installing and Operating This Valve
- Confirm the flange standard and lug hole pattern on the pipe before ordering
- Ensure the pipe end is clean and free of burrs before installing the valve
- Tighten the through bolts evenly in a cross pattern to avoid seat distortion
- Open the disc fully after installation and confirm free quarter-turn travel
- Do not use the valve as a pressure test plug during hydrostatic testing
- Cycle the valve periodically on lines that remain in one position for extended 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.
DLA001 Lug Butterfly Valve Vulcanized Seat and Bare Shaft FAQ
What size and pressure rating is DLA001?
It is a lug type butterfly valve in the DLA series. The nominal diameter and pressure rating are confirmed against your line data when we quote, as the same body is offered in multiple variants.
Can this valve be used at the end of a pipe run?
Yes. The lug body has threaded holes on both ends, allowing installation at the end of a pipe run or in dead-end service.
Which materials are used for the body, disc, and seat?
Material selection depends on the medium and temperature on your line, so we confirm the combination with the quotation and issue material certificates with the order on request.
Can it be supplied with an actuator instead of a lever?
Yes. The bare shaft stem accepts a lever, gearbox, or pneumatic or electric actuator, and the valve is assembled and tested with the actuator fitted before shipment.
Do you supply the larger diameters in the same series?
Yes. The DLA lug butterfly 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 DLA001 Lug Butterfly Valve Vulcanized Seat and Bare Shaft
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.