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CN | EN

Cast Steel Trunnion Type Ball Valve（Electric )

Technical Parameters

Valve model: Q947F/H

Diameter specification: DN25～700mm

Structural form: two-stage casting valve body

Body material: cast steel (WCB), stainless steel (304, 316, 316L)

Nominal pressure: PN1.6, 2.5, 4.0, 6.4MPa

Applicable temperature: -40℃~425℃

Application scope: petrochemical, gas equipment, power equipment, environmental protection water treatment


Product Details

Product Design Features

Serial floating ball valves are mainly applied to natural gas,oil products,chemical engineering,metallurgy,city building,environment protection,pharmacy and food industries, among which the anti-sulphur series are used for long delivery pipes of natural gas that contains hydrogen sulphide medium,a lot of impurity and corrosive substances.


The main structure features include:

1.Construction of the shell

The valve bush of the stationary ball valve can be designed to three types:casting construction, forging construction, and full welding construction,according to user's demand or different working condition.And the ball valve of the full welding construction is mainly applied to underground operation.

2.The unique sealed structure of valve seat

Pre-ball sealed structure,post-ball sealed structure or pre-post-ball double sealed structures are available for choosing to different pressure,medium properties,and sealing  requirements of the fixed ball valves.

3.Automatic pressure-relieving structure

When an abnormal rising of pressure appear in the hollow cavity,the single sealed-structure takes on the function of automatic pressure relieving,whiie the double-sealed structure can finish the job through a attached pressure-reliving  device to the valve body.

4.Emergent repairman for the sealed structure

When leak was caused by damage on the valve seat or valve stick,the sealed grease injected through the grease feeding valve can seal the valve at once.

5.Fire-resistant Structure

According to the operating condition and user's requirement,ball valve can be designed with a fire-resistant structure up to the fire resistant standards of API607,API 6FA and JB/T6899.Once the soft seal ring is burnt out on fire,the structure can avoid serious leaking of the medium and prevent the fire from scaling up.

6.Anti-static Structure

While operating the valve,the friction between the sphere and the base will produce static charges accumulating on the sphere.To avoid static sparkle,the fire-resistant device is designed to derive the accumulated static sparkle,charges from the sphere.

7.Jam and release

When the valve is close,the valve seats will stop the effluence,and the precipitate in the can be released through the releasing device.

8.Locking Device

A locking structure is designed on the full-open and full-close spots of manual ball valves to avoid abnormal open-and-close produced by miss-operation or unpredictable circuit vibration.On production lines of petroleum and chemicals of flammable mediums,and during the course of outdoor piping,the design is especially advantageous and practical.

9.Full Drift Diameter Structure and Retractive Diameter Structure

The two structure series are produced to meet different requirement of users,The passage inside diameter of full diameter ball valves is the same as that of valve pipe,which is convenient for pipe cleaning.The weight of retractive diameter ball valves is relatively lighter,but the fluid resistance is just 1/7 that of stop valves with the same caliber.Therefore,the application prospects of retractive diameter series is much better.


Main External Connection Dimensions(PN1.6MPa)

DN

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

700

d1

25

32

40

50

65

80

100

125

150

200

250

300

337

387

438

489

591

686

L

165

180

190

216

241

283

305

356

394

457

533

610

686

762

864

914

1067

1245

H

50

55

80

102

114

127

152

184

219

273

360

395

430

470

550

580

700

800

Electric

H2

-

-

-

-

-

-

-

-

554

600

652

760

770

830

-

940

940

1115

L1

-

-

-

-

-

-

-

-

235

235

235

259

400

400

-

410

410

410

 

(PN2.5MPa)

DN

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

700

d1

25

32

40

50

65

80

100

125

150

200

250

300

337

387

438

489

591

686

L

165

180

190

216

241

283

305

381

403

502

568

648

762

838

914

991

1143

1346

H

50

55

80

102

114

127

152

184

219

273

360

395

430

470

550

580

700

800

Electric

H2

-

-

-

-

-

-

-

-

235

235

400

400

410

410

-

420

690

690

L1

-

-

-

-

-

-

-

-

74

350

350

420

420

400

-

400

410

650

 

(PN4.0MPa)

DN

25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500

600

700

d1

25

32

40

50

65

80

100

125

150

200

250

300

337

387

438

489

591

686

L

165

180

190

216

241

283

305

381

403

502

568

648

762

838

914

991

1143

1346

H

50

55

80

102

114

127

152

184

219

273

360

395

430

470

550

580

700

800

Electric

H2

-

-

-

-

-

-

-

-

235

235

400

400

410

410

-

420

690

690

L1

-

-

-

-

-

-

-

-

74

350

350

420

420

400

-

400

410

650

 

(PN6.4MPa)

DN

50

65

80

100

150

200

250

300

350

400

500

600

700

d1

50

65

80

100

150

200

250

300

337

387

489

591

686

L

292

330

356

406

495

597

673

762

826

902

1054

1232

1397

H

114

124

133

159

250

294

395

445

500

530

660

800

900

Electric

H2

-

-

-

-

554

574

731

771

867

802

979

1085

1148

L1

-

-

-

-

235

235

400

400

410

410

420

690

690



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