Product Description> Attemper and Reducer Device

Attemper and Reducer Device of Fourth Generation

（I）Structure Features
    Attemper and reducer device of fourth generation is a kind fairly ideal upgraded product successfully developed on basis of nearly 20 years’ design and manufacture experience and absorption of advanced techcnology and structure of foreign countries. It can satisfy demands of various conversion working condition. Its main features include low noise（≤80dBA） and large flow conversion range（adjustable ratio）（up to 10%Q～100%Q）.
 It consists of reducer system, attemper system and safety protection device. Its main features are as follows：
1.Adopt attemper and reducer valve structure. Temperature and pressure reducing is finished within the same valve, thus length of the whole device shortened to 1/2 or so of traditional structure, area coverage reduced and engineering investment decreased；
2.Attemper and reducer valve adopts Z-shape single-base sleeve structure to reduce pressure. It increases adjustable ratio of the flow and decreases valve leakage； Inside the valve, there is throttle hole set（mesh cover） to increase reducing range and avoid direct spray of cooling water on the valve body, thus protecting it and lengthening use life of the valve;
3.Inside the attemper and reducer valve, there is automatic atomization umbrella-shape adjustable nozzle set. It satisfies needs of greatly changed working condition and atomization effect is improved largely；
4.Temperature adjustment system adopts water control valve of high differential pressure, which not only reduces leakage inside but also spares recycle water branch of water distribution valve of the device’s traditional system, facilitating overall arrangement of the device；
5.Water control valve of high differential pressure of the same caliper has different value of flow coefficient Cv for selection, which greatly improves adjustment sensitivity and accuracy of temperature adjusting system；
6.Travel executive framework is assembled for attemper and reducer valve and water control valve. It gets rid of traditional lever gemel framework, reduces empty travel of intermediate link and further improves sensitivity and accuracy of adjusting system.

（II）Main Performance Indices
1.Inlet steam pressure P1≤ 5.4MPa,t1≤485℃。
2.Outlet flow Q and flow characteristic：outlet flow Q of attemper and reducer device can realize ideal adjustment within the range of 10%～100%.
With various flow features of equal percentage （EP）and linear （LN）, able to satisfy demands of different working conditions；
3.Outlet steam pressure P2：
Adjustment accuracy of outlet steam pressure P2 is not less than 1.0 grade.
4.Outlet steam temperature t2：
Adjustment accuracy of outlet steam temperature t2 is not less than 1.5 grade.
5.Noise：
In course of normal running, at 1 meter of lower end of attemper and reducer valve, and also 1 meter away from pipe wall, noise grade is not more than 80dBA.

（III）Supply Range
    Supply range of attemper and reducer device is within mark, mainly are：
1.Reducer system：attemper and reducer valve, and throttle plate etc；
2.Attemper system：water control valve and throttle valve etc；
3.Safety system：safety valve and check valve etc；
4.Pipeline sytem：steam pipeline, transition pipe and attemper water pipe etc；
5.Matched fittings：stop valve, double-metal thermometer and take-over, pressure meter and three-way pipe, syphon, adapter, flange, cushion, bolt, nut and gasket etc.

WY-401 Model Attemper & Reducer Device Series Chart（A Set of Impulse Safety Valve）

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