(03) 5336 2113(08) 9249 19432www.johnvalves.com.au

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19 Martin Drive, Ballarat VIC 335046/110 Inspiration Dr, Wangara, WA 6065sales@johnvalves.com.au

Australian made since 1896ACN: 007 400 759 | ABN: 98 007 400 759

TILTING DISC CHECK VALVE

John Fig 4205

The JOHN wafer type tilting disc check valve, Fig. 4205 is an economical alternative to the conventional type tilting disc valve. The overall length of the body has been reduced to the extent that in the fully open position, the disc extends into the pipeline. This considerable reduction in size and weight greatly facilitates installation and reduces installation costs. The disc swings on the large diameter hinge pins and a high degree of pressure tightness is assured by the slight clearance on the pivots permitting the disc, when closed, to be completely unsupported by other than the seating face.

• Available in larger sizes upon request.

• It is recommended that valves are installed a minimum

of 8 - 10 pipe diameters from the pump.

• All valves fitted with extended hinge pins.

• It is good engineering practice to fit a counter weight

to the extended hinge pins.

• Available in other materials and trims.

OPTIONAL EXTRAS

• Counter weight.

• Open/shut indicator.

• Remote position indication.

• No-flow limit switch.

Class 35 Pressure Rating - Fig. 4207, Table ‘H’ flanges.

Available upon request

JOHN FIG: 4025 Size Range: 100 - 600mm End connection: Flanged AS2129 Table F

MAX. WORKING PRESSUREWATER: 2100 kPa @ 60°C. Flanged AS2129 Table FHYDROSTATIC TEST PRESSUREBody: 3150 kPa Seat: 2100kPa

CHECK VALVE

A

110

130

170

200

228

228

241

254

280

330

B

305

370

430

490

550

580

610

675

735

850

C

25

29

29

32

35

35

35

38

41

44

D

205

250

260

310

330

400

400

400

400

530

Kg

27

41

59

86

131

145

167

213

260

424

Cv

802

1476

2664

3898

5465

6565

8068

11186

14095

20733

Kv

18.9

34.8

62.9

92.0

129

155

190

264

332

489

K

1.80

1.68

1.26

1.22

1.15

1.05

0.90

0.75

0.72

0.69

SIZE

150

200

250

300

350

375

400

450

500

600

COMPONENT

Body

Disc (up to 300)

Disc (above 300)

Disc ring

Body seat ring

Hinge pin

Hinge pin seal

Hinge pin bush

MATERIAL

S.G. Cast Iron

Gunmetal

S.G. Cast Iron

Gunmetal

Gunmetal

Stainless Steel

Luprene

Lubron

SPECIFICATION

AS 1831-400-15

AS 1565-C83600

AS 1831-400-15

AS 1565-C83600

AS 1565-C83600

AS 2837-431

VALVE MANUFACTUREGENERAL ENGINEERINGVALVE RECONDITIONING

• Epoxy coating.

• Special paint finish.

• Flanges drilled to AS2129

Table C/D, E, F, ANSI or DIN.

Cv = Flow Coe�cient US Gal/min. to give 1 psi pressure drop. Kv = Flow Coe�cient L/s to give 1 kPa pressure drop.K = Dimension less resistance Coe�cient.Dimensions in mm. Weights in Kg.

DC

B

A