DF3C002 Concentric Flange Butterfly Valve Epoxy Coated Disc and Wormgear
DF3C002 is a concentric flanged butterfly valve with an epoxy coated disc and wormgear operation, designed for on-off and throttling service in water, low-pressure industrial, and heating applications. It connects to pipe flanges via bolted flange ends and uses a wormgear for manual quarter-turn control, allowing precise operation in tight spaces. The epoxy coating on the disc resists corrosion and wear in water and mild chemical environments.
| Model Code | DF3C002 |
|---|---|
| Product Type | Concentric Flange Butterfly Valve[Epoxy Coated Disc and Wormgear] |
| 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 | DF3C002 |
| Valve Type | Concentric flanged butterfly valve |
| Disc Coating | Epoxy coated |
| Operation | Wormgear manual quarter-turn |
| Connection | Flanged, bolted to pipe flanges |
| Series | DF3C002 concentric flanged butterfly valve series |
What This Model Gives You
- Epoxy coated disc resists corrosion and wear in water and low-pressure service lines
- Flanged connection allows direct bolt-on installation to existing pipe flanges
- Wormgear operation provides smooth, controlled quarter-turn actuation with mechanical advantage
- Concentric disc design ensures low torque and minimal pressure drop in open position
- Compact size and lightweight construction reduce installation and support costs
- Part of a valve programme certified to ISO 9001 and ISO 14001
Problems It Removes
- Uncoated metal discs corrode or degrade in water and mild chemical service, leading to premature failure
- Manual operation with direct lever becomes difficult at larger diameters; wormgear reduces required torque
- Lack of standardised flanged butterfly valves with corrosion protection leads to inconsistent sourcing
- Space constraints between flanges make long valves impractical; flanged butterfly valves are compact
- Buyers need a single supplier for both small and large diameters across multiple valve types
Where It Is Installed
- Isolation of water supply lines in municipal and district heating systems where corrosion resistance is needed
- Throttling control in low-pressure cooling water circuits in power and industrial plants
- Service line isolation in pharmaceutical and chemical process piping with moderate media aggressiveness
- Installation in retrofit projects where space between flanges is limited and weight must be minimised
- Use in marine and offshore platforms where epoxy-coated components reduce maintenance from saltwater exposure
Buyers It Suits
- Water utility and district heating system operators sourcing corrosion-resistant valves
- Plant engineers standardising on flanged butterfly valves for low-pressure service
- EPC contractors procuring valves for water and heating packages with consistent performance
- Valve distributors stocking flanged butterfly valves with corrosion-resistant discs
- Marine and offshore project buyers needing lightweight, low-maintenance isolation valves
How It Is Built
- Concentric disc design with central pivot for balanced operation
- Flanged end connections for bolted attachment to pipe flanges
- Epoxy coated disc resists corrosion in water and mild chemical environments
- Wormgear actuator for manual quarter-turn operation with torque multiplication
- Quarter-turn stem for precise open-close control and position confirmation
- Part of a product programme covering DN10 to DN2600 and 0.05 to 4.0 MPa
Material Selection
- Body, disc, stem and seat materials are confirmed per order against the buyer's medium and temperature
- Disc coating is epoxy resin applied to the disc surface for corrosion resistance
- Material certificates are issued with the order when the buyer requests them
How It Is Made
- Body castings inspected and machined on in-house fine machining equipment
- Disc coated with epoxy resin and cured under controlled conditions
- Wormgear assembly fitted to the stem and tested for smooth operation
- Valve assembled with disc, stem and gear, then cycled and pressure tested
- 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 under pressure
- Operating 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 coating variant selected based on the medium and temperature on the buyer's line
- Flange drilling matched to the standard used on the buyer's pipework
- Wormgear can be replaced with lever, gearbox, or actuator on request
- Private label marking and packing available on OEM orders
- Mixed-diameter orders combined with other valves in one container
How It Compares With the Alternatives
| Concentric flanged gate valve | The gate valve provides a full bore but is heavier and longer; the butterfly valve offers faster operation and lower cost |
|---|---|
| Lug type butterfly valve | The lug body allows end-of-line service; the flanged body requires flanges on both sides and cannot be used as a pipe end closure |
| Wafer type butterfly valve | The wafer body clamps between flanges; the flanged body bolts directly to pipe flanges and is more suitable for high-vibration or high-temperature service |
| Ball valve at DN100 | A ball valve offers tighter shut-off at higher pressure but costs more and requires more space for actuator clearance |
Installing and Operating This Valve
- Confirm the flange standard and bolt pattern on both pipe flanges before ordering
- Ensure the disc is fully closed before bolting the valve into place to avoid seat damage
- Tighten flange bolts evenly in a cross pattern to prevent misalignment
- Operate the wormgear slowly to confirm smooth quarter-turn travel and no binding
- 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 long durations
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
DF3B001 Concentric Flange Butterfly Valve Nylon Coated Disc and Gearbox
View Specification
DF3A005 Concentric Flange Butterfly Valve Al-Bronze Disc and Wormgear
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.
DF3C002 Concentric Flange Butterfly Valve Epoxy Coated Disc and Wormgear FAQ
What size and pressure rating is DF3C002?
It is a concentric flanged butterfly valve in the DF3C002 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?
No. A flanged butterfly valve requires flanges on both sides to bolt to. For end-of-line service, consider a lug type body instead.
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 on request.
Can it be supplied with a different actuator?
Yes. The stem accepts a lever, gearbox, or actuator. 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 DF3C002 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 DF3C002 Concentric Flange Butterfly Valve Epoxy Coated Disc and Wormgear
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.