Electric V type regulating ball valve VQ947H-16C

Electric V Regulating Ball Valve VQ947H-16C Product Description

The electric V regulating ball valve VQ947H-16C is designed for automatic cutting or process adjustment needs in papermaking pulp, chemical batching, environmental water treatment, and pulp transportation. 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

Structure and working mode

VQ947H-16C adopts flange connection, V shaped notched ball core, and metal hard sealing structure. The angular stroke electric actuator drives the ball core to rotate and adjusts the flow rate by changing the opening area; When cutting off, corresponding sealing requirements should also be met. This structure is not used for three-way or four-way reversing. The actuator is selected based on the valve operating torque and maximum working pressure difference. Continuous adjustment also requires checking the positioning control, allowable operating frequency, input signal, and valve position feedback. The power supply, power-off state, and protection requirements should correspond to the on-site control conditions.

Caliber pressure and material

The commonly used nominal diameter is DN25-DN400, the pressure rating is PN16/PN25/PN40/PN64, and the valve body can be selected as WCB/CF8/CF8M. 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 metal valve seats with hardened ball cores 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 V shaped ball core of VQ947H-16C is used to form an adjustable opening that changes with the rotation angle. The selection of metal sealing pairs should match the medium and closing requirements. The application of pulp or fiber containing media should be checked separately for particle characteristics, abrasion conditions, and flow requirements, and cannot rely solely on the V structure to ensure non clogging. When used in hazardous areas, the applicability of the electric actuator and supporting electrical accessories should be verified; The specific flow characteristics, adjustable range, and cut-off performance should be supported by corresponding product data.

Installation and commissioning

Before installation, the flange standard, sealing surface, structural length, and specified flow direction should be checked, welding slag and hard debris inside the pipe should be removed, and the matching flange should be ensured to be aligned to avoid transmitting additional pipeline stress to the valve body. Electric actuators should have maintenance space, and wiring and cable entrances should be handled according to equipment requirements. During debugging, verify the control instructions, core position feedback, and limit settings, check the adjustment direction and interlock logic, and then complete the sealing and operation checks according to regulations.

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 supply, wiring, control module, valve position feedback, and electric 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.

Corresponding pneumatic products can be found inVQ647H-16C Pneumatic V Regulating Ball ValveFor more electric products, please refer toSelection of electric ball valve。

VQ947H-16C electric V type regulating ball valve common problems

Can VQ947H-16C be used for both cutting and adjusting at the same time?

The V structure can be used for corresponding adjustment conditions, but the actual cut-off level, flow characteristics, and allowable pressure difference still need to be confirmed based on specific product data.

Does metal hard sealing mean that all high-temperature conditions are applicable?

No. It is also necessary to verify the actual temperature capacity of the valve body, ball core, valve seat, packing, and other internal materials.

Is 4–20mA the default configuration?

No. The control signal depends on the actual selected regulating actuator and control module.

Order Information List

Suggest providing the composition of the medium, design and operating temperature, maximum and normal pressure, flow range, pipeline standards, operating frequency, power supply, control signals, valve position feedback, requirements for electric actuators, 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.