QV677H-QV647H

QV677H/QV647H series WCB flow regulating control stainless steel v-type pneumatic segment control ball valve

Features

Product overview:

The pneumatic V-type ball valve is an advanced control valve with a quarter-turn structure.Used in conjunction with a valve positioner to achieve proportional regulation.When used together with a two-position five-way solenoid valve and a control box, it can realize switch control.Pneumatic V-type regulating ball valve is suitable for the control of gas, liquid and solid granular media.

Specifications

Nominal diameter(mm)

25

32

40

50

65

80

100

125

150

200

250

300

350

400

Rated flow coefficient Cv

32

43

78

90

160

250

360

610

1120

1850

2950

3700

7195

11466

Nominal pressure

PN1.6,2.5MPa

Strength test

2.4MPa

Sealing test

1.76MPa

Flow characteristics

Approximately equal percentage

Valve plate rotation angle (degrees)

0°- to 90°(adjustable)

Allowable leakage level

Soft seal: zero leakage

Hard seal: ≤ rated Cv×0.001%

Soft seal: VI micro bubble pole,

metal seal: ≤ rated CV × 0.065%

Action time

 (S/90 degrees)

8.5-30

36-60

Adjustable ratio

250:1

300:1

Configuring the Executor

GT, AT, AW series single and double acting pneumatic actuators

Control method

Switch type (two-position switch control), regulating type (4-20mA control)

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