Electric flange butterfly valve D941X-16Q

Product Features

Quick opening and closing, low flow resistance, remote control

Model number

D941X-16Q

Specification and caliber

DN50-DN1200

Pressure level

PN10/PN16

Material

QT450-10/WCB/CF8

Product Introduction

Electric Flange Butterfly Valve D941X-16Q Product Description

The electric flange butterfly valve D941X-16Q is designed for automatic cut-off or process regulation needs in water supply and drainage, HVAC, fire protection, public works, and industrial circulating water. When selecting, the composition of the medium, working temperature, maximum and normal flow rates, pressure before and after the valve, pipeline connection standards, operating frequency, and fault safety position should be checked first. The diameter cannot be directly applied based on the existing diameter. The parameters in this article are within the commonly used configuration range, and the final data should be based on the project operating conditions, technical confirmation form, and manufacturing drawings.

Product Specifications

Product Model	D941X-16Q
Structural form	Centerline butterfly plate, flange connection, elastic valve seat
Nominal Diameter	DN50-DN1200
pressure rating	PN10/PN16
Valve body material	QT450-10/WCB/CF8
sealing form	EPDM/NBR/PTFE Soft Seal
Drive Type	Angular stroke electric actuator
Applicable temperature	-20℃ to 120℃, confirm according to the sealing material
Applicable Medium	Clear water, sewage, air, and compatible general media

Structure and working mode

D941X-16Q adopts a centerline butterfly plate, flange connection, and elastic valve seat. After the fluid enters the valve body, the position of the opening and closing parts is changed by the angular stroke electric actuator, thereby completing cutting, reversing or continuous adjustment. The actuator should be selected based on the maximum working pressure difference, valve stem thrust, or output torque, with a reasonable safety factor. When remote feedback, positioning, or interlocking is required, the control signal, power or gas source, switch time, power and gas loss position, and protection level should be clearly defined to avoid inconsistencies between on-site interfaces and control logic.

Caliber pressure and material

The commonly used nominal diameter is DN50-DN1200, the pressure rating is PN10/PN16, and the valve body can be selected as QT450-10/WCB/CF8. Material selection needs to consider corrosion resistance, chloride ion content, temperature cycling, medium cleanliness, and external environment simultaneously. The allowable temperature, pressure difference, and leakage level of EPDM/NBR/PTFE soft seal should be checked synchronously; The hardness, erosion allowance, and packing structure of the valve core and seat should also be confirmed for conditions involving particles, easy crystallization, or high-frequency operation.

Product Features and Applications

The main features of this product are rapid opening and closing, low flow resistance, and remote control. After reasonable configuration, it can be used for water supply and drainage, HVAC, fire protection, public works, and industrial circulating water. The adjustment purpose needs to be combined with the flow characteristics and adjustable ratio to calculate the valve opening, while the cut-off purpose should focus on confirming the allowable leakage amount and action time. Dangerous areas should select actuators, locators, solenoid valves, and limit switches according to the on-site explosion-proof zoning; When dealing with highly corrosive, toxic, or flammable media, specialized material and safety reviews should also be conducted.

Installation and commissioning

Before installation, the nameplate, flow direction, flange or clamp standards should be checked, welding slag and hard debris in the pipeline should be removed, and the front and rear pipe sections should be concentric. It is forbidden to use valves to forcibly correct pipeline deviations. Space for disassembly and assembly should be reserved around the actuator, cable entrances should be protected from rainwater backflow, and pneumatic accessories should use clean and dry air sources. For the first debugging, it is advisable to check the fully open and fully closed positions, travel feedback, interlock logic, sealing condition, and abnormal noise under low-risk conditions, and then gradually increase the working pressure.

operation and maintenance

During operation, action time, valve position feedback, leakage, pressure difference, and control signals should be recorded. If the action is slow, the power or gas source, wiring, filter pressure reducing valve, locator, and actuator should be checked first, and then the valve stem, valve seat, and seals should be checked. Blindly increasing the driving force is not advisable. Before maintenance, it is necessary to isolate the medium, relieve pressure, and confirm that there is no residual energy; After replacing the seal, conduct strength, sealing, and action tests according to regulations, and record the material and maintenance date of the spare parts.

Q&A on selection of electric flange butterfly valve

How to choose a soft sealing ring for D941X-16Q in contact with oil media?

It is necessary to specify the specific oil product, temperature, pressure, and cleaning medium, and verify the compatibility between the valve seat and the seal. Applicability cannot be judged solely based on whether the valve body is made of stainless steel or ductile iron, nor can different rubber materials be directly interchanged.

Can D941X-16Q directly replace the original flange butterfly valve?

Please provide the connection standard, structural length, sealing surface, and on-site space of the old valve, and verify the driving height and flow direction requirements of the new valve. It cannot be determined that direct replacement can be made solely based on the same caliber and nominal pressure.

Will D941X-16Q automatically shut down after a power outage?

The power-off action cannot be determined solely by the name of the electric drive. Ordinary electric actuator cannot default to having automatic valve closing function when power is lost; If the process requires fault closure, the energy storage or other fault safety scheme of the actuator should be confirmed at the time of ordering, and the entire valve interlock verification should be completed.

Order Information List

Suggest providing the composition of the medium, design and operating temperature, maximum and normal pressure, flow range, pipeline standards, operating frequency, control signals, power or gas supply conditions, fail safe location, and environmental protection requirements. Fouten Flow Control (Jiangsu) Co., Ltd. will verify the caliber, material, seal, actuator, and accessory combination based on these materials to ensure that the product parameters are consistent with the actual pipeline conditions, and provide traceable basis for subsequent installation and maintenance.