电动执行器

Yangzhou Kaidesi Environmental Protection Equipment Co., Ltd. specializes in the development of electric valves and electric actuators

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Introduction to the working principle of electric double seated regulating valve

发表时间:2018-08-21 13:56:46 Article source: Publication time: 2018-08-21 13:56:46

The electric double-seat regulating valve produced by our company is composed of a double-seat valve body and a straight-stroke electric actuator independently developed by our company. The electric double-seat regulating valve adopts a dual-guide structure, which has the characteristics of compact structure, light weight, sensitive action, large valve capacity, accurate flow characteristics, and convenient disassembly and assembly. The electric actuator equipped with the electric two-seat regulating valve contains a feeding amplifier, which accepts a uniform standard signal of 4-20mA or 1-5V · DC, converts the current signal into a corresponding linear displacement, and automatically controls the opening of the regulating valve. Degree to continuously adjust process parameters such as pressure, flow rate, temperature, and liquid level of the fluid in the pipeline. Electric two-seat regulating valve is widely used in precise control of media such as gas, liquid, steam, etc., especially for occasions with large pressure difference and less strict requirements on leakage.

Main technical parameters of electric two-seat regulating valve Nominal diameter (DN) 20 25 32 40 50 65 80 100 125 150 200 250 300

Seat diameter (dn) 20 25 32 40 50 65 80 100 125 150 200 250 300

Rated flow coefficient (KV) straight 10 12.5 19.5 30.5 48.4 76 125 195 305 484 760 1000 1600

Percentage 8 11 17,6 27.5 44 69 110 176 275 440 690 900 1300

Allowable pressure difference (MPa) ≤ nominal pressure

Nominal pressure (MPa) 1.6, 2.5, 4.0, 6.4, 10.0

Rated stroke (mm) 16 25 40 60 100

Valve cover form standard type (-17 ~ + 250 ℃), high temperature type (+ 250 ~ + 450 ℃), low temperature type (-40 ~ -196 ℃), bellows seal type (-40 ~ + 350 ℃)

Gland type bolt compression type

V-type PTFE packing, V-type flexible graphite packing

Spool type double seat plunger guided spool

Flow characteristics linearity, equal percentage

Equipped with actuator category 381L series electric actuator, PSL series electric actuator, (also customer-specific brand actuators)

Actuator parameters Power supply voltage: 220V / 50Hz, input signal: 4-20mA or 1-5V · DC, output signal: 4-20mA · DC

Protection level: Equivalent to IP55, flameproof mark: ExdⅡBT4 (ExdⅡBT6 special customization), hand operation function: handle, handwheel

Ambient temperature: -25 ~ + 70 ℃, ambient humidity: ≤95%

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Keyes environmental protection equipment for 28 years, focus on electric actuators

Address: 283 Weiyang Road, Yangzhou City, Jiangsu Province

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