■ Overview

The ZAZM electric sleeve regulating valve consists of a DDZ type straight stroke electric actuator and a compact sleeve valve. Combined with a servo amplifier, it receives a unified 4-20mA or 0-10mA · DC standard signal, converts the current signal into a corresponding linear displacement, automatically controls the opening of the regulating valve, and achieves continuous adjustment of process parameters such as pressure, flow rate, temperature, and liquid level of the fluid in the pipeline. The main features are as follows:

1. Adopting a balanced valve core, it allows for a large pressure difference and stable operation under unbalanced forces.

2. The large guiding surface of the valve core can improve the oscillation caused by eddy currents and impacts.

3. Reduce noise by about 10dB compared to ordinary single or double seat regulating valves.

4. The structure is simple and easy to assemble, disassemble, and maintain.

■ Valve body

Type: Straight through single seat cast ball valve

Nominal diameter: 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300mm

Nominal pressure: PN1.6、4.0、6.4MPa

Flange standard: JB/T79.1-94、 79.2-94, etc

Materials: cast steel (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti), etc

Upper valve cover: standard type -17~+230 ℃, heat dissipation type+230~+450 ℃, low temperature type -60~-196 ℃, bellows seal -40~+350 ℃

Cover type: bolt compression type

Packing: V-shaped PTFE packing, PTFE impregnated asbestos packing, asbestos textile packing, graphite packing

■ Valve components

Valve core type: single seat plunger valve core

Traffic characteristics: equal percentage characteristics and linear characteristics

Materials: Stainless steel (1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 17-4PH, 9Cr18, 316L), stainless steel overlay with Stellite alloy, titanium, and corrosion-resistant alloys, etc

■ Executing Agency

Type: Electric actuator (such as DKZ actuator)

Power supply: 220V or 380V

Input signal: 4-20mA or 0-10V · DC

Output signal: 4-20mA · DC

■ Valve action type

Split type (B) or electrically open type (K) valve

■ Attachment

DFD type electric operator, ZPE type servo amplifier

■ Structural images