ZDRV electric V type ball valve the valve is a core seat with metal, rotating ball valve or metal to PTFE seal fit, it will be the best control characteristics of ball and butterfly valves are combined into a whole, can be used as a control valve, and also can be used as a cut-off valve. Its main feature is the:
(1) the whole body without any pipe joint, and therefore not subject to pipeline or bolt stress influence, and because the valve body without any pipe joints, so the pressure hull are not affected by the pressure of "mutation";
(2) with a V type valve, even in small flow rate or high viscosity media, also can be in the range, accuracy control;
(3) leak proof and durable seat in outer diameter lined with stainless steel inner core PTFE cup or O type sealing ring, valve seat made of tungsten carbide cobalt larger section, through a corrugated spring alloy further enhances the seat structure;
(4) when the valve is closed, the wedge-shaped shearing V notch and the valve seat, and not only has the function of self-cleaning and can prevent the ball stuck, especially suitable for the freezing pipeline or containing fibers and particles of solid.
Suitable for high viscosity, suspension, unclean paper pulp, fiber containing medium. Using direct connection is connected with the actuating mechanism, has the advantages of compact structure, small size, light weight, small resistance, stable and reliable. Actuator configured according to user requirements of UNIC, PSQ, HQ, DHL and other types of electronic electric actuator or GTX, AL and other gas actuator Pneumatic piston.
Technical parameters of the nominal diameter of DN (mm) 25 ～ 400
Nominal pressure PN (MPa) 1.6 ～ 6.4
Nominal pressure Ps (MPa) strength test of 2.4 ~ 9.6
Seal test 1.76 ~ 7
Material, code named C P R
The main:
WCB ZG1Cr18Ni9Ti ZGOCr18Ni12Mo2Ti body parts
2Cr13 ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti Club
The stem of 2Cr13 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
Ring PTFE, stainless steel, hard alloy sealing
Flexible graphite packing, PTFE
Applicable
Conditions suitable medium of water, steam, oil, nitric acid acetic acid
Suitable temperature -28 ~ 400 ℃ -28 ℃ ~ 500 ℃
Actuator type No. CH, 3410R, UNIC, PSQ, HQ, DHL series of electric actuators
Connection form on the clip, flange, flange according to JB79-59 standard
Performance:
The basic error return difference dead zone input signal output signal
The whole trip.
≤± 2% full stroke
≤± 2% full stroke
≤ 0.8% 4 ~ 20mADC, 4 ~ 20mADC
Nominal diameter of D (mm) 253240506580100125 150200250300350400
The rated flow coefficient Cv 32437890160250360 610112018502950370 719511466
Nominal pressure PN (MPa) 1.6, 2.5, 4, 6.4
The flow characteristics of approximate equal percentage (see the typical curve graph), linear characteristic
The valve plate angle (degrees) 0 ° to 90 ° (adjustable)
Allowable leakage levels: soft seal zero leakage
Seal: ≤ rated Cv * 0.001%
Soft sealing: level, microbubble VI ≤ rated metal sealing: CV * 0.065%
Movement time (S/90) of 8.5 ~ 30
36 60
Adjustable ratio 250:1 300:1