The main function of the pneumatic butterfly valve positioning component is to eliminate all kinds of hysteresis and incongruity. It is mainly used in the composite position adjustment system to achieve reverse operation, manipulate non-standard execution components, and the positioning component receives the signal sent by the pneumatic adjustment component, and then generates a gas pressure signal of corresponding proportion according to the signal, In order to achieve the effect of controlling the pneumatic regulating parts, according to the work rules, it can be divided into position moving balancing parts and torque balancing parts.

3、 Main technical parameters of electric three-way ball valve
1. Valve body type Three way cast ball valve Nominal diameter DN15~200mm Nominal pressure PN1.6
2.5、4.0 MPa； ANSI 150、300LB ； JIS 10, 20, 30K flange standards GB/T9113, JB/T79, HG20594 and other standard connection forms flange (FF RF RTJ), welding (SW BW), thread (taper thread, pipe thread) bonnet form integral gland type bolt compression type sealing filler V-type PTFE filler, impregnated PTFE filler, asbestos braided filler, flexible graphite valve body material cast steel (WCB) Stainless steel (CF8, CF8M, CF3, CF3M)
2. Trim valve core form O-shaped ball valve core+electronic polishing flow characteristics approximate quick opening characteristics Valve core material Stainless steel (CF8, CF8M, CF3, CF3M)+nitriding treatment 3. Actuator actuator models CHR, 3810R, DZW, HQ, PSQ Main technical parameters Power supply voltage: 220V/50Hz, 380V/50Hz, input signal: 4-20mA or 1-5V · DC, output signal: 4-20mA · DC Protection class: equivalent IP65 (or IP67) Explosion proof sign: Exd Ⅱ BT4 (CT5), manual operation function: handle, handwheel, ambient temperature: - 25 ～+70 ℃, ambient humidity: ≤ 95%
4、 Control mode of electric three-way ball valve The electric three-way ball valve is divided into L type and T type, and the flow direction of medium is shown in the figure below. L-type electric three-way ball valve is applicable to the switching of medium flow direction, which can connect two mutually perpendicular channels: T-type electric three-way ball valve is applicable to the diversion, confluence or flow direction switching of medium. T-type orifice can connect three channels or two of them. Electric three-way ball valve generally adopts two seat structure, or four seat structure according to user requirements.
5、 Main performance specifications of electric three-way ball valve Nominal diameter DN (mm) 1520253240506580100125150200 Allowable pressure difference (MPa) ≤ nominal pressure action range 0~90 ° Leakage Q is less than rated KV0.01% Basic error ± 1% Return ± 1% Dead zone ≤ 1% according to GB/T4213-92
6、 Outline Dimension Drawing of Electric Three way Ball Valve Q944/45 Outline Connection Dimension Drawing of Electric Three way Ball Valve
7、 External connection dimension of electric three-way ball valve Nominal diameter DN (mm) 1520253240506580100125150200L150150180200220240260280320340440550L17590100110120140160190220275H According to the actuator D95105115140150165