Electric V ball valve VQ947F-16C

Product Features

V type throttling, shearing ability, remote adjustment

Model number

VQ947F-16C

Specification and caliber

DN25-DN300

Pressure level

PN16/PN25

Material

WCB/CF8/CF8M

Product Introduction

Electric V Ball Valve VQ947F-16C Product Description

The electric V ball valve VQ947F-16C is used for automatic switching or process control in papermaking, wastewater treatment, slurry transportation, and chemical plants. The selection should check the medium, temperature, maximum and normal flow rates, pressure difference before and after the valve, pipeline standards and control requirements, and should not be based solely on the existing pipe diameter. This article lists the commonly used configuration range, and the final data should be based on project conditions, order confirmation forms, and manufacturing drawings.

Product Specifications

Product Model	VQ947F-16C
Structural form	Flange connection, V type ball core, shear type flow channel
Nominal Diameter	DN25-DN300
pressure rating	PN16/PN25
Valve body material	WCB/CF8/CF8M
sealing form	Enhance PTFE or metal seal, confirm according to particle working conditions
Drive Type	Angular stroke electric actuator
Applicable temperature	-20℃ to 250℃, confirm according to the sealing material
Applicable Medium	Pulp, fiber media, pulp and general process fluids

Structure and working mode

VQ947F-16C adopts flange connection, V type ball core, and shear flow channel. When the fluid passes through the valve body flow channel, the position of the opening and closing parts is changed by the angular stroke electric actuator to complete cutting or adjustment. The actuator should match the torque or thrust of the valve and reserve a reasonable safety factor. When feedback, positioning, or interlocking is required, the power supply, control signals, valve position feedback, on-site protection requirements, protection levels, and fault safety positions should be clearly defined during the ordering phase to avoid interface mismatch on site.

Caliber, pressure and material

The commonly used caliber is DN25-DN300, the pressure rating is PN16/PN25, and the valve body material can be selected as WCB/CF8/CF8M. The selection of materials should take into account the corrosiveness of the medium, chloride ions, temperature fluctuations, and cleaning conditions. Enhance PTFE or metal seal, confirm according to particle working conditions, and check its allowable temperature, pressure difference, and leakage level simultaneously. For steam, particle containing, easily crystallized or frequently operated conditions, the hardness of valve internals, packing form and erosion prevention measures should also be confirmed.

Characteristics and applicable industries

The product features include V throttling, shear flow channel, and electric remote control. The specific flow characteristics, allowable pressure difference, and regulation performance should be based on actual product data. Dangerous areas should select corresponding actuators, accessories, and wiring methods according to explosion-proof zones; Food, pharmaceutical and other systems also need to confirm the requirements for liquid receiving materials, surface treatment and cleaning. Projects involving oxygen, highly corrosive or toxic media should undergo specialized material and safety reviews.

Installation and commissioning

Before installation, the nameplate, flow direction, and connection standards should be checked, and welding slag and hard debris should be removed to ensure the concentricity of the front and rear pipe sections and avoid the transmission of pipeline stress to the valve body. Maintenance space should be reserved around the actuator, and cable entrances should be waterproofed and protected according to the on-site environment; The first debugging should check the fully open and fully closed positions, valve position feedback, interlocking logic, and sealing condition.

operation and maintenance

Observe action time, abnormal noise, leakage, valve position feedback, and control signals during operation. When the action is slow, first check the power supply, wiring, control module, valve position feedback, and electric actuator, and then check the valve stem, valve seat, and seals. It is not advisable to blindly increase the driving force. 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 of the spare parts and the date of maintenance.

Q&A on the selection of electric V ball valve

Can VQ947F-16C replace ordinary ball valves for continuous flow regulation?

It is necessary to calculate the flow coefficient based on the minimum, normal, and maximum flow rates and corresponding pressure differentials, and confirm that the V flow channel, valve seat, flow characteristics, and actuator are suitable for adjustment. Simply replacing the actuator of the switch ball valve with a regulating type cannot be considered equivalent in performance.

Do I need to confirm the input signal and valve position feedback when connecting VQ947F-16C to DCS?

It is necessary to confirm the control input, valve position feedback, power or gas source conditions, interfaces, and fault location separately. Input and feedback are not the same function, and it cannot be assumed that all analog signals or communication protocols are fully equipped based solely on the name "regulating type".

Will VQ947F-16C 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.

Ordering Information

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 and requirements for electric actuators, 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 this, providing traceable basis for installation and maintenance.

More electric ball valves are availableSelection of electric ball valveThe corresponding pneumatic V structure can be referred toVQ647F-16C Pneumatic V Ball ValveThe overall selection of ball valves can be found inBall valve manufacturer column。