DFA001 Concentric Flange Butterfly Valve Hand Lever and JIS 10K
DFA001 is a concentric flanged butterfly valve with a hand lever, designed for on-off and throttling service in water, low-pressure industrial lines, and general process applications. It connects to pipe flanges using bolts through the valve flanges, allowing direct integration into existing piping systems without additional flange pairs. The concentric disc design ensures low torque and smooth operation, suitable for repeated cycling in medium- and low-pressure environments.
| Model Code | DFA001 |
|---|---|
| Product Type | Concentric Flange Butterfly Valve[Hand Lever and JIS 10K] |
| Category | Concentric Flanged Butterfly Valves |
| Manufacturer | Tianjin MIC Valve Co., Ltd. |
| Size and Pressure Rating | Confirmed on quotation |
| Certification | ISO 9001 and ISO 14001 certified plant |
| Model | DFA001 |
| Valve Type | Concentric flanged butterfly valve |
| Connection | Flanged, JIS 10K standard |
| Operation | Quarter-turn, hand lever |
| Series | DFA001 flanged butterfly valve series |
| Nominal Diameter Range | DN10 to DN2600 mm |
| Nominal Pressure Range | 0.05 to 4.0 MPa |
What This Model Gives You
- Flanged connection allows direct bolt-to-flange installation without extra flange pairs
- Concentric disc design reduces operating torque and provides smooth quarter-turn operation
- Compact profile fits into tight spaces where gate valves would not
- Hand lever enables manual operation with visual position confirmation
- Built into a valve programme certified to ISO 9001 and ISO 14001
- Available across the full DN10 to DN2600 nominal diameter range with pressure ratings up to 4.0 MPa
Problems It Removes
- Gate valves are too long and heavy for installations with limited space between flanges
- Lack of standard flange compatibility leads to mismatched connections and extra fittings
- Manual valves without visual position indication cause uncertainty during operation
- Valves with high operating torque require more effort and are harder to cycle repeatedly
- Buyers need a single supplier covering both small and large diameters across multiple applications
Where It Is Installed
- Isolation of water supply lines in municipal and industrial distribution networks
- Throttling control in low-pressure heating and cooling circuits
- Process line shut-off in chemical and pharmaceutical plants operating at moderate pressure
- Integration into pump discharge lines where space between flanges is limited
- Maintenance isolation in power plant auxiliary systems with JIS 10K flange standards
Buyers It Suits
- Procurement engineers sourcing medium- and low-pressure valves for water and heating systems
- Piping designers specifying compact isolation valves for tight skid or rack layouts
- EPC contractors standardising on a single valve family across multiple project phases
- Valve distributors stocking flanged butterfly valves from DN10 upward with JIS compatibility
- Facility operators requiring reliable quarter-turn valves for routine maintenance access
How It Is Built
- Flanged connection with bolt holes matching the JIS 10K standard
- Concentric disc design for low operating torque and balanced flow
- Quarter-turn operation via hand lever for quick on-off control
- Body and disc made from materials confirmed per order against the medium and temperature
- Part of a DFA flanged butterfly series that continues through 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 offered across the DFA flanged butterfly 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 concentric alignment and verified for balanced travel
- Seat fitted and tested for proper sealing and centring
- Valve assembled, cycled, and pressure tested before packing
- Marked, wrapped, and crated for container shipment from Tianjin
How It Is Checked
- Dimensional check of flange bolt hole pattern and face-to-face length before assembly
- Seat and shell tightness tested on the assembled valve
- Operating torque and full quarter-turn travel verified on every unit
- Testing conducted 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
- Flange drilling matched to the JIS 10K standard or other flange standards upon request
- Hand lever, gearbox, or actuator fitted before shipment
- Seat and disc variant selected for the specific medium and temperature
- 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
| DN50 gate valve | The gate valve provides a full bore but is longer, heavier, and requires more space for operation |
|---|---|
| Lug type butterfly valve | The lug body allows end-of-line service; the flanged version requires flanges on both sides |
| Wafer type butterfly valve | The wafer body clamps between flanges and cannot be used at the end of a line; the flanged body can be used in dead-end service |
| Ball valve at DN50 | A ball valve offers tighter shutoff at higher pressure but has higher cost and larger space requirements |
Installing and Operating This Valve
- Confirm the flange standard and bolt pattern on both pipe flanges before ordering
- Ensure the flange faces are clean and free of debris before bolting the valve in place
- Tighten the flange bolts evenly in a cross pattern to avoid misalignment
- Open the disc fully after bolting to confirm free quarter-turn travel
- Do not use the flanged valve as a pipe end closure during pressure testing
- Cycle the valve periodically on lines that remain in one position for extended periods
Related Models Industries and Guides
DF9A001 Concentric Flange Butterfly Valve Electric Actuator with Hand Wheel
View Specification
DF3C003 Concentric Flange Butterfly Valve Epoxy Coated Disc and Half Shaft
View Specification
DF3C002 Concentric Flange Butterfly Valve Epoxy Coated Disc and Wormgear
View Specification
DF3B001 Concentric Flange Butterfly Valve Nylon Coated Disc and Gearbox
View SpecificationPower Generation
Cooling water circulating water and auxiliary system isolation for power station pipework.
Heat Supply
District heating primary and secondary circuit isolation balancing and expansion.
Preventing Seat Leakage in Butterfly Valves
Where butterfly valve seats actually fail and what to change in specification or installation.
DFA001 Concentric Flange Butterfly Valve Hand Lever and JIS 10K FAQ
What size and pressure rating is DFA001?
It is a flanged butterfly valve in the DFA001 series. The nominal diameter and pressure rating are confirmed on request based on your line data, as the same model is offered in multiple variants.
Can this valve be used at the end of a pipe run?
Yes, if the pipe has a flange on the end. The flanged body can be used in dead-end service, 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.
Can it be supplied with an actuator instead of a hand lever?
Yes. The stem accepts a hand lever, gearbox, or pneumatic or electric actuator, and the valve can be assembled and tested with the actuator fitted before shipment.
Do you supply the larger diameters in the same series?
Yes. The DFA flanged 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 DFA001 Concentric Flange Butterfly Valve Hand Lever and JIS 10K
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.