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        產品詳情

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        ZMAQ pneumatic diaphragm three confluence valve

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        ZMAX (Q) series of pneumatic diaphragm three valve dual spool upper and lower guide structure, equipped with multi spring actuator, valve for the four structures, namely one into two (shunt), two into a (confluent), so as to achieve the fluid mixing heating or cooling effect, or fluid from a shunt, meet the requirements of different conditions. The valve has the advantages of compact structure, in a light, sensitive action, small pressure drop loss, allowing the pressure high, new capacity is big, flow valve is accurate and convenient maintenance and so on, can be used in a variety of working conditions, temperature automatic control system and other industry control is especially suitable for the oil industry in the heat exchanger. The valve has closed (divided) flow type, (points) flow high temperature type and other types of. Product nominal pressure level of a user PN1.6, 4, 6.4; the valve nominal diameter range of DN25~400; leakage class II grade, IV grade; flow is characteristic for linear and equal percentage. A variety of different specifications are available.

        Materials of main parts

        Name

        Texture of material

        The valve bodyZG230-450、ZG0Cr18Ni9
        Valve seat0Cr18Ni9, 0Cr18Ni9+PTFE, 0Cr18Ni9+ division Chatterley
        The valve stem0Cr18Ni9、2Cr13
        The push rod0Cr18Ni9、2Cr13
        Spring60Si2Mn
        Bellows0Cr18Ni9

        Corrugated diaphragm

        Clip reinforced nylon fabric nitrile rubber

        Film cover

        A3、0Cr18Ni9

        Shim

        0Cr18Ni9, graphite spiral wound gasket (V6590), F4

        Filler

        PTFE, flexible graphite

        The main technical parameters of the three-way valve

        All diameter.253240506580100125150200250300350400
        Seat diameter mm253240506580100125150200250300350400
        Rated KV8.51321345385135210340535800128019602560
        Nominal pressure(MPa)1.6、2.5、4.0、6.4
        Trip(mm)16254060100130

        The effective area of the film Ae

        (cm2)

        2803505609001400

        活塞式

        Signal range KPa20-100、40-200、80-240
        Air pressure MPa0.1-0.40.4-0.7
        The inherent flow characteristicsLinear, equal percentage, quick opening
        The inherent adjustable ratio30:1
        The leakage classIII、IV
        Flange size

        According to JB/79. (2) _94, HG20592_97, GB, ANSI, JIB, DIN and other standards

        Body material

        WCB, 304, 316, WC6, nickel, titanium, Hastelloy, Monel etc.

        Valve material

        304, 316, 420, nickel, titanium, Hastelloy, Monel etc.

        Working temperature ℃

        -40~+230 ℃ (room temperature), +230~+450 ℃ (temperature), +450~+560 ℃, -40~-196 ℃ (high temperature) (low)

        Series type

        At room temperature, medium temperature, low temperature type. Bellows seal type, jacket type heat, regulating off type

        Main performance index

        Serial numberProjectThe performance index

        Not with a locator

        with a locator

        1basic error(%)±5±1
        2The return difference <(%)31
        3The dead zone<(%)30.4
        4 Always point bias<(%)The starting point(%)±5±1
        Finish(%)±2.5
        5Rated stroke deviation <(%)±2.5
        6Allowable leakage (1/h)The rated flow coefficient deviation< (%)
        7The rated flow coefficient deviation<(%)±10
        8The inherent flow characteristicsTo meet the requirements specified in IEC534-1 and GB/T4213-92 slope deviation in

        Note: This product performance accords with GB/T4213 - 2008

        DN(mm)253240506580100125150200250300
        LPN1.6MPa185200220250275300350410450550670700
        PN4.0MPa190210230255285310355425460560740803
        PN6.4MPa200200240265295320370440475570752819
        H1135152165180200220222265322362508563
        A280360470580
        H Normal atmospheric temperature70271879583010671080109412931321140020652151
        H Medium temperature83281892596012141243125714921520159723402432
        Weight (PN64 at room temperature)40456065100125150250290450--

        Ordering instructions
        When ordering, please fill in "specification" or indicate the following contents:
        One, if the order has not selected models, please provide the parameters are used to send us your
        1, nominal diameter, nominal flow in coefficient Kv
        2, the fluid properties (including the nominal pressure, temperature, viscosity and pH value "
        3, the valve action form (gas closed or gas - Open)
        4, flow at
        5, in front of the valve, the valve pressure
        6, valve body, broad core material
        7, the input signal
        8, with the attachment, the attachment type, so that we can correct for your selection.
        Two, special requirements
        1, special inspection
        2, complete degreasing, water treatment;
        3, no copper processing;
        4, special interface, piping;
        5, the use of vacuum conditions;
        6, specify the color of the coating
        7, special medium (gas, chlorine, nitrogen)
        8, the use of stainless steel connections;
        Three, if the unit has been selected from the design of our products, please click models directly to our sales department order
        Four, the occasion is very important when using or complicated pipelines, please make cocoons provide design drawings and detailed parameters, from our experts to your review gatekeeper.

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