Pneumatic Ball Valves

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

Pneumatic V-type control valve with pneumatic actuator. The V-port ball provides strong shearing action, excellent control linearity, resistance to particulate erosion, and reliable sealing for demanding service conditions.

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Exploded View of Pneumatic V type Control Valve

Product Introduction

Engineered for precise throttling, the valve serves high-accuracy control duties across petrochemical, fine chemical, pulp and paper, metallurgical, boiler feedwater, and other process industries.

It performs flow, pressure, temperature, and proportional control, plus automatic on/off shutoff, for low- to medium-pressure, standard-temperature media. A manual override allows operation during power loss.

Features

  • Compact & lightweight — one-piece body with ultra-short face-to-face dimension; weight reduced to ~50% of a comparable conventional ball valve.
  • Self-clearing shear — the V-port seat gap shears pipeline solids and debris, keeping the flow path unobstructed.
  • Stable throttling — the V-port ball eliminates the control instability of standard ball valves. Equal-percentage characteristic yields a linear relationship between the controlled variable and valve position; flow rises gradually from initial opening. Interchangeable V-port balls with different cut geometries give the same nominal size multiple Cv values and flow characteristics.
  • Tight shutoff — dual spherical sealing surfaces enhance sealing and leakage control, achieving zero leakage at a Class IV shutoff rating.

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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If you have a question or comment,
please email us at [email protected]

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