3pc thread pneumatic ball valve:

Precision casting valve body, high pad design, according to ISO5211 standard, can be direct mounting pneumatic actuator, electric actuator and realized automatic control. 3pc structure, easy remove and installation.

Standard technical parameters:

Body

Nominal diameter: DN15-DN100mm

Body material: 304,316,316L

Connection type: Thread (G/NPT/BSPT)

Pressure class: PN1.6-PN6.3MPa

Structure type: Floating ball core

Valve components

Seat seal: PTFE: -20°~180°

PPL: -20°~ 250°

Core material: 304,316,316L

Stem material: 304

Applicable medium: Water, liquids, gas, oil, acid-base medium

Performance

Fire protection structure design

ISO5211 standard can direct mounting actuators

Between the core and the valve body antistatic device

Stem explosion proof design

Double stem packing conforms to the German TUV TA - being LUFL stem leakage test

Double butterfly shrapnel automatic compression packing design

Allowable pressure differential: Less than nominal pressure 1.6MPa

Leakage: Zero leakage

Hysteresis:±2.5%

Dead zone: without

Design and manufacturing standards

Thread type: G,NPT,BSPT,BSP,DIN259/2999

Top flange: ISO5211

Pressure test: ISO5208 API598

Outline size drawing: 

Pneumatic actuator

Double acting: Air to open, air to close, air supply failure to keep the current position

Single acting air to open type: Air to open, interrupt air to close, air failure to close

Single acting air to close: Air to close, interrupt air to open, air failure to open

Optional accessory: Reversing solenoid valve, limit switch box, air filter reducing valve,

positioner, handle manual, lock up valve

We mainly supply high quality ball valve, butterfly valves, pneuamtic actuator, electric

actuator, pneuamtic angle seat valve pneumatic diaphragm valve,pvc valve, sanitary valve,

3 way ball valve, regulation valve and penuamatic valve accessories.

POV is always keeping its advantage of leading technology so as to produce high quality

products and promptly provide customers with comprehensive and satisfactory services.

POV is a famous control valve manufacturer, and also as one of the world

fluid process industry leaders.The products with unique design, excellent quality,

exquisite workmanship and nearly perfect operation reliability, for global users to

provide the best quality service.

1. Pneumatic control type working principle

Pneumatic actuator

Double acting: Air to open, air to close, air supply failure to keep the current position

Single acting air to open type: Air to open, interrupt air to close, air failure to close

Single acting air to close: Air to close, interrupt air to open, air failure to open

Optional accessory: Reversing solenoid valve, limit switch box, air filter reducing valve,

positioner, handle manual, lock up valve

I.  Double acting (POADA series) 

(Counterclockwise)

Compressed air to Port 2 forces the pistons outwards, causing the output shaft to turn 

counterclockwise, while the air is being exhausted from Port 4.

(Clockwise) Air to Port 4 forces the pistons inwards, causing the pinion to turn clockwise

 while the air is being exhausted from Port 2.

2. Single acting (POASR) 

(Counterclockwise)

Compressed air to Port 2 forces the pistons outwards, causing the springs to compress,

the pinion counterclockwise while air is being exhausted from Port 4.

(Clockwise)

 Loss of air pressure, the stored energy in the springs forces the pistons inwards,

 the pinionturns clockwise, while air is being exhausted from Port 4.

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