Stop Ball Valve

What is a stop ball valve ?

ZQO stop valve includes actuator and ball valve. O type ball valve has a strong function, small volume, lightweight, good seal, large flow, reliability using and so on. Especially, the ball valve has a reliable seal as a pipe inside stop use. It is widely used in food, environmental protective, light industry, petroleum, paper marking, chemical, teaching and scientific research equipment, electric and other industry now.

ZQO Pneumatic Stop Ball Valve
ZQO Pneumatic Stop Ball Valve
ZQO Electric Stop Ball Valve
ZQO Electric Stop Ball Valve

Standard Specification

Body type:Straight casing valve
Disk type:O type globe ball
Nominal diameter:DN15 ~300 NPS 1/2〞~12〞
Nominal pressure:PN16—64 Class 150LB—300LB
Connection:Flange FF, RF, RTJ and so on. Wafer
Bonnet type :Whole piece
Packing:V type PTFE, Flexible graphite
Seal gasket:Metal clip graphite
Actuator:Pneumatic: Pneumatic piston actuator, pneumatic diaphragm actuator
Electric: DTR series, 3810 series
Surface painting:: Green Acrylic polyurethane enamel


Z Actuator Q Structure type   Nominal pressure Body material Nominal diameter
Z series stop valve S: Pneumatic piston actuator
J: pneumatic diaphragm actuator
Q stop valve O: Standard type hard seal
OH: Hard seal
D=Special material
Such as: Pneumatic piston stop valve, Pressure PN16, Body material WCB, Nominal diameter DN50.Type is ZSQO-16C DN50


Flow characteristic Quick open(ON-OFF)
Rated CV figure Fully port type CV 21~7359
Travel Full open 90°
Allowance leakage Soft seal : 0 leak


Nominal diameter (mm) 15 20 25 32 40 50 65 80 100 125 150 200 250 300
Rated  Cv 21 38 72 112 170 273 384 512 940 1452 2222 3589 5128 7359
Pneumatic actuator seat: PTFE
Double action ATD 50 63 75 88 100 125 145 180 240 265
Single action ATS- 63 75 88 100 115 125 145 160 200 240 265 330
Electric actuator  Seat: PTFE
Electric actuator 3410R- 05 10 20 50 60 100


Pneumatic piston actuator Full electronic type electric actuator
AT Series 3410 Series
Single action, Double action Stop type
Usage Adjustment, on-off Stop
Supply gas pressure or supply voltage Air supply pressure ( spring scope)
400 Kpa G
Power: AC 200V±10%  50Hz
Or AC 380V±10% 50Hz
Connector Air tube adapter: RC1/4 Normal type: Cable intake 2-PF(G1/2〞)
Exd: it can be installed protective sleeve PF(G3/4〞
Working temperature -10℃~+70℃ Standard type: -10℃~+60℃
With spacer heater: -35℃~+60℃
Exd type: -10℃~+40℃
Coating Green, acrylic polyurethane enamel Blue, acrylic polyurethane enamel
Option parts Electric-Pneumatic (Pneumatic-pneumatic)valve positioner, LFT, Valve position transmitter, solenoid valve, limited switch Space heater (normal type)
Note: Not standard configuration, need to state especially to custom
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