Pneumatic Ball Valves

Pneumatic Wafer Type V type Control Valve
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Pneumatic V-port Control Valve

Pneumatic V-type control valve is driven by a pneumatic actuator. Featuring a V-shaped plug with strong shearing capability, excellent control linearity, resistance to particle erosion, and reliable sealing, it is suitable for harsh working conditions.

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Exploded View of Pneumatic V type Control Valve

Product Introduction

With its outstanding regulating performance, the pneumatic V-type control valve is widely used in high-precision regulating applications in various industrial fields, including petrochemicals, fine chemicals, paper making, metallurgy, boiler feed water, and others.

The pneumatic V-type control valve is widely applied to flow control, pressure control, temperature control, proportional control, and other industrial automatic control and shut-off applications for various medium-low pressure and normal-temperature media. It is equipped with a manual operation function in case of power failure.

Features

  • Lightweight. Thanks to the one-piece body structure, an ultra-short face-to-face dimension is achieved, and the overall weight is significantly reduced to approximately 50% of that of conventional ball valves of the same type.
  • The shear gap formed between the seat and the plug can easily cut off various impurities in the pipeline, effectively ensuring unobstructed flow.
  • The unique V-shaped plug structure solves the control stability problem of traditional ball valves. For stable flow regulation, the equal-percentage characteristic provides a linear relationship between the controlled parameter and the valve opening. When the valve begins to open, the flow increases gradually. The plug defines the valve characteristics; plugs with different shaped openings allow valves of the same nominal size to have different CV values and flow characteristics.
  • Double-sided spherical sealing enhances sealing performance and effectively controls leakage, achieving zero leakage with a sealing class of IV.

Basic Parameters

Nominal Diameter (DN): DN15～DN350 (For larger sizes, please contact us)
Nominal Pressure (PN): 1.6MPa, 4.0MPa, 6.4MPa (PN16, PN40, PN64)
Action Time (0-90°): 15s, 30s (Optional)
Operating Power: AC110V, AC220V, AC380V, DC24V
Control Method: Modulating or On/Off Control
Pneumatic Action Mode:
- Single Acting (with spring return) - Double Acting
Connection Type: Flange Connection, Wafer Type Connection
Dead Band: 0.3%-3.0% Adjustable
Ambient Temperature: ≤60℃

Material Specifications

Body & Internal Components

Valve Body Material: Cast Steel (ZG230-450), Stainless Steel (ZG1Cr18Ni9Ti, 316, 316L), Titanium Alloy
Ball Core Material: Stainless Steel (ZG1Cr18Ni9Ti, 316, 316L, A105), Titanium Alloy
Valve Stem Material: Stainless Steel (ZG1Cr18Ni9Ti, 316, 316L)
Packing Material: PTFE, Flexible Graphite
Sealing Type:
- Soft Seal (Media Temp ≤220℃) - Hard Seal (Media Temp ≤450℃)
Valve Seat Material: PTFE, Carbon Fiber Reinforced PTFE, Stainless Steel/Stainless Steel+STL
Leakage Rate: Class VI (Soft Seal), Class V (Hard Seal)

Suitable Media

  • Food
  • Grease
  • Fibrous Fluid
  • Water
  • Oil Products
  • Gas

Standards Compliance

Flange Standard:
- JB/T79-2015 - JB/T74-2015

Main Parameters

Nominal Diameter DN(mm)1520253240506580100125150200
Flow Coefficient Cv at 100% Opening (Ref.)O-type2444841221983204435951096169226024212
Rectangular8.713.42032.644.370114134186270462688
V-type7.5111728386098116155233397595
Flow CharacteristicRectangular: Approximate linear
V-type (Logarithmic): Equal percentageO-type: Quick opening
Nominal Pressure16（1.6MPa）、40（4.0MPa）、64（6.4MPa）
Rangeability50:1 100:1 300:1
Flange StandardJB/T79-2015、JB/T74-2015
Body MaterialCast steel (ZG230-450), Stainless steel (ZG1Cr18Ni9Ti, 316, 316L), Titanium alloy
Ball Core MaterialStainless steel (ZG1Cr18Ni9Ti, 316, 316L, A105), Titanium alloy, etc.
Valve Stem MaterialStainless steel (ZG1Cr18Ni9Ti, 316, 316L)
Packing MaterialPTFE, Flexible graphite
Sealing TypeSoft sealHard seal
Medium Temperature≤220℃≤450℃
Seat MaterialPTFECarbon fiber reinforced PTFEStainless steel or Stainless steel + STL
Leakage RateClass ⅥClass Ⅴ
Nominal DiameterDN15-DN350（Contact us for larger sizes）
Nominal PressurePN1.6MPa～PN6.4MPa
Connection TypeFlanged connection, Wafer connection
Actuation Time15秒、30秒（Optional）（0-90°）
Power SupplyAC110V,  AC220V，AC380V，DC24V
Control ModeRegulating or On-off control
Pneumatic ActuationSingle-acting (with spring return) or Double-acting
Ambient Temperature≤60℃
Applicable MediumFood, Grease, Fibrous fluid, Water, Oil, Gas
Dead Band0.3%-3.0% Adjustable

Dimension Drawing

1.Outline Drawing and Connection Dimensions of Pneumatic V-type Control Valve (Wafer Type)

气动对夹式v型球阀尺寸图
InAφDH1H2Double ActingSingle Acting
HW1W2HW1W2
1/2"625474751861477218614772
3/4"625474751861477220216883
1"625474752021688321418495
1 1/4"6278807520816883229204103
1 1/2"6282857522518495242262109
2"751008795236204103260268122
2 1/2"80120105115262262109320301142
3"100131115125288268122347390152
4"115158125125340301142382458174
5"130180140155355301142397458174
6"160216153165385390152443525206
8"200260200195457458174515532226
10"240325225225515525206575602260

Note: The suitable actuator model may vary depending on the service medium, valve torque and control method, resulting in corresponding changes to relevant dimensions.

2.Outline Drawing and Connection Dimensions of Pneumatic V-type Control Valve (Long Flange Type)

气动长法兰v型球阀尺寸图
DND1D2dKDn-φdBFLH2Double ActingSingle Acting
mmInH1W1W2H1W1W2
151/2"15284565954-Φ14142102552761477227614772
203/4"152855751054-Φ14142102602861477230216883
251"204066851154-Φ14142102653121688332418495
321 1/4"2546781001354-Φ181621147532216883343204103
401 1/2"3254851101454-Φ181621148034418495361262109
502"40651001251604-Φ1816212485363204103387268122
652 1/2"50801201451804-Φ18182145100381262109439301142
803"651001351601958-Φ18202165105391268122450390152
1004"801101551802158-Φ18202194115493301142535458174
1255"1001351852102458-Φ18223210130497301142539458174
1506"1251652102402808-Φ23243229150534390152592525206
2008"16020526529533512-Φ23263243175589458174647532226
25010"21026032035540512-Φ26303297220662525206722602260

Note: The suitable actuator model may vary depending on the service medium, valve torque and control method, resulting in corresponding changes to relevant dimensions.

Circuit Diagram

S

S

Switching Action Mode：Switching operations (open/close) are achieved via AC switching signals, and a set of active position signals indicating fully open/fully closed status are output.

MS

MS

Switching Action Mode: Outputs passive contact signals. Structure：Equipped with two intermediate position switches.

PIU

PIU

Switching Action Mode: Outputs 0~1000Ω feedback signal. Structure: Equipped with 500Ω or 1kΩ potentiometer.

CPT

CPT

Switching Action Mode:
Outputs 4~20mA valve position feedback signal. Structure: Equipped with 1kΩ potentiometer and R/I converter.

PCU

PCU

Regulating Action Mode:Accepts 4~20mA control signal input and outputs 4~20mA valve position feedback signal. Structure: Integrated with 1kΩ potentiometer and control module (servo amplifier).

G

G

DC switching signals are output from the circuit via an external DC power supply to control the opening/closing program, and a set of passive contact signals corresponding to fully open/fully closed positions are provided.

SP

SP

Switching Action Mode: 
Controls valve opening angle via switching circuit, corresponding to potentiometer resistance value, while enabling intermediate position control function. Structure: Integrated with potentiometer and intermediate position switch.

H

H

Three-phase AC switching signals are output through an external three-phase power phase-reversing circuit to control opening/closing operations, accompanied by a set of passive contact signals for fully open/fully closed position indication.

Documents & Drawings:

V port ball valve scaled
GRAT-V-Port Control Valve Selection Catalog
GRAT Pneumatic Valve Instruction Manual
GRAT-Pneumatic Valve Instruction Manual

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please email us at [email protected]

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