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(03) 5336 2113(08) 9249 19432www.johnvalves.com.au
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19 Martin Drive, Ballarat VIC 335046/110 Inspiration Dr, Wangara, WA [email protected]
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
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