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電動調節V型球閥
electric V-type control ball valve
電動V型調節球閥是一種芯閥座采用金屬，或金屬對聚四氟乙烯密封配合的旋轉球閥，它將球閥和蝶閥的*控制特性結合成一體,既可用作控制調節閥，又可作關斷切斷閥。其主要特點是：
（1）不帶任何管接頭的整體式閥體，因此不受管道或螺栓應力影響，并且由于閥體無任何管接頭，故耐壓殼體不會受壓力“突變”的影響；
（2）具有一個V型閥體，即使在小流量或高粘度介質的情況下，也可在整個量程范圍內，保證控制的精確性；
（3）防漏耐用的閥座在其外徑處襯有帶不銹鋼內芯PTFE杯形或是O型密封圈，閥座用截面較大的鎢鈷硬質合金制成，通過一個合金的波紋彈簧進一步增強了閥座的結構；
（4）當閥門關閉時，V型缺口與閥座之間產生楔形剪切作用，并既具有自潔功能又可防止球芯卡死，特別適用于管線結垢凍結或含有纖維和顆粒固體場合。
適用于高粘度、懸浮液、紙漿等不干凈、含纖維介質場合。采用直連方式與執行機構連接，具有結構緊湊、尺寸小、重量輕、阻力小、動作穩定可靠等優點。執行機構根據用戶要求配置UNIC、PSQ、HQ、DHL等型號電子式電動執行機構或GTX、AL等氣動活塞式執行機構。調節閥用于調節介質的流量、壓力和液位。根據調節部位信號，自動控制閥門的開度，從而達到介質流量、壓力和液位的調節。調節閥分電動調節閥、氣動調節閥和液動調節閥等。調節閥由電動執行機構或氣動執行機構和調節閥兩部分組成。調節并通常分為直通單座式和直通雙座式兩種，后者具有流通能力大、不平衡辦小和操作穩定的特點，所以通常特別適用于大流量、高壓降和泄漏少的場合。流通能力Cv是選擇調節閥的主要參數之一，調節閥的流通能力的定義為：當調節閥全開時，閥兩端壓差為0.1MPa，流體密度為1g/cm3時，每小時流徑調節閥的流量數，稱為流通能力，也稱流量系數，以Cv表示，單位為t/h。
Electric V- type control ball valve is a rotating ball valve that trim is metal or metal on the PTFE seal .It's absorbed best control characteristics in ball valve and butterfly valve, not only as control adjustment valve, but also as cut off valve . Flowing are the main features:
（1） There aren't any pipe joints of integral valve, therefore it's not subject to pipe or bolt influence, pressure case will not be subject to "mutation" of pressure.
（2） With V- type body , even if in low flow rate or high viscosity media, it can also guarantee accuracy of control within framework .
（3） Leakage-proof and durable seat with stainless steel trim of PTFE cup -shaped or O-ring in outer diameter. Valve is made of a large cross-section tungsten carbide carbide, bellows spring of the alloy enhance the structure of the seat.
（4） When valve is closed, V- notch and seat bring about wedge-shaped shearing , not only self-cleaning ,also prevent trim being stuck, especially it's suitable for freezing pipeline or containing fibers and particles of solid occasions. It's suitable for media of high viscosity ,suspension ,unclean paper pulp and fiber containing . Directly connection connected with actuator .The advantage are compact structure, small size, light weight, resistance movements, stable and reliable. Actuator can be equipped with UNIC,PSQ, HQ, DHL etc electronic actuator or GTX,AL etc , pneumatic piston actuator. Control valve is used for adjusting media flow, pressure, liquid level and divided into electric control valve, pneumatic control valve and hydraulic control valve . Control valve are composed of electric actuator or pneumatic actuator and control valve and is divided into two-seat single-block and straight-through type, the latter one with large flow capacity ,imbalance and stable operating characteristics , so it's usually used in large flow ,high pressure drop and litter leakage. Flow capacity , Cv is one of main parameters . Flowing capacity of control valve is defined as : both ends of valve of difference pressure is 0.1Mpa when it's closed. when fluid density is 1g/cm 3 ,every hour of flowing path number of control valve is called flowing capacity or flowing coefficient expressed by Cv and unit is t/h.
型 號：ZKHV-16P
公稱壓力：PN1.6、2.5、4.0、6.4Mpa
公稱通徑：DN15—DN600
zui大轉角（α°）： 90°
工作溫度：-40～300℃
傳動機構：電動
輸入信號：電信號:4~20mADC, 觸點信號: 1kΩ 1~5VDC
閥座形式：（硬密封座）304、316、（軟密封座）聚四氟乙烯
主要材質：閥體 （1）WCB （2）304 （3）316 （4）316L
閥 芯 : 304 、316 、316L
適用介質：制漿、水、懸浮顆粒、粉塵
注：DN15～DN250對夾式、DN300∽DN600法蘭式
Model: ZKHV-16P
Nominal pressure :PN1.6、2.5、4.0、6.4Mpa
Nominal diameter : DN15-DN600
Maximum angle（a°）:90°
Working temperature:-40~300℃
Transmission :electric
signal input: signal :4 ～20mADC,
contact signal:1kΩ 1~5VDC
Seat type:（hard seal）304、316、
（sofe seal）PTFE
Material:body（1）WCB、（2）304（3）316 （4）316L
Trim :304、316、316L
Media:pulping、water、suspended particles, dust
