Electric single seat regulating valve ZAZP-16C

Product Features

Single seat cut-off, straight stroke adjustment, remote control

Model number

ZAZP-16C

Specification and caliber

DN20-DN200

Pressure level

PN16/PN25 (optional)

Material

WCB/CF8/CF8M (optional)

Product Introduction

Product Description of Electric Single Seat Regulating Valve ZAZP-16C

Electric single seat regulating valve ZAZP-16C is used for automatic switching or process control in HVAC water systems, process pipelines, boiler auxiliary equipment, and general automatic control. 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	ZAZP-16C
Structural form	Straight through single seat valve core, flange connection, upper guide structure
Nominal Diameter	DN20-DN200
pressure rating	PN16/PN25 (optional)
Valve body material	WCB/CF8/CF8M (optional)
sealing form	PTFE or metal valve seat, confirmed according to the medium temperature
Drive Type	Direct stroke electric actuator
Applicable temperature	Confirm against the actual body, seat, packing and corresponding product data sheet
Applicable Medium	Water, steam, air, and general process media

Structure and working mode

ZAZP-16C adopts a straight through single seat valve core, flange connection, and upper guide structure. When the fluid passes through the valve body flow channel, the position of the opening and closing parts is changed by a linear 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 control signal, power or gas source, protection level, and fault safety location should be clearly defined during the ordering phase to avoid on-site interface mismatch.

Caliber, pressure and material

The nominal diameter range is DN20-DN200. PN16 or PN25 pressure configurations and WCB, CF8 or CF8M valve bodies are available. Specify the selected combination in the order, data sheet and nameplate; different materials are not interchangeable for every medium. The selection of materials should take into account the corrosiveness of the medium, chloride ions, temperature fluctuations, and cleaning conditions. PTFE or metal valve seat should be confirmed according to the medium temperature, and its allowable temperature, pressure difference, and leakage level should be checked 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 single-seat shut-off, linear modulation and remote control, which can be used for HVAC water systems, process pipelines, boiler auxiliary equipment, and general automatic control after reasonable configuration. 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. Maintain maintenance space around the actuator, and prevent rainwater from entering the cable entrance; Pneumatic accessories should use a clean and dry air source. The first debugging should check the switch position, stroke feedback, interlocking logic, and sealing condition under low-risk conditions, and then gradually enter the working pressure.

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 or gas source, wiring, filter pressure reducing valve, and 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 single seat regulating valve

ZAZP-16C pipeline is DN50, must the regulating valve also be selected as DN50?

not always. Please provide the minimum, normal, and maximum flow rates, upstream and downstream pressures, media, and temperature. First, calculate Cv/Kv and the available opening range, and then determine the valve diameter; Choosing too large may also make small flow regulation unstable.

Do I need to confirm the input signal and valve position feedback when connecting ZAZP-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 ZAZP-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, 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 this, providing traceable basis for installation and maintenance.