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Reflux Valves |
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Application |
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Reflux valves
are used in pipe lines to reduce water hammer and to prevent
back flow of water to the pumps from rising mains. |
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These valves are
suitable for handling clear water having turbidity of 3000 ppm
maximum within the limits of the working pressure mentioned
overleaf suitable for temperature up to 50oC. |
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Accessories
Available |
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Dashpot Arrangement |
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Scour Plate |
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Counter Weight arrangement |
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Drain Plug |
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Bypass Arrangement
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Bill of Material
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Item No. |
Item Qty. |
Name of
Component |
Material |
Specification |
Component
Drg.
No. |
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1. |
1 |
Body |
G. Cast Iron |
IS:210 FG 200 |
VV/CH/BD/ |
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2. |
2 |
Body Ring |
Leaded Tin Bronze |
IS:318 LT B2 |
VV/CH/BR/ |
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3. |
2 |
Flap Ring |
Leaded Tin Bronze |
IS:318 LT B2 |
VV/CH/FR/ |
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4. |
1 |
Flap |
G. Cast Iron |
IS:210 FG 200 |
VV/CH/F/ |
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5. |
1 |
Flap Pin |
Stainless Steel |
IS:1570 PARTV |
VV/CH/FP/ |
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6. |
1 |
Hinge |
G. Cast Iron |
IS:210 FG 200 |
VV/CH/H/ |
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7. |
As Rqd. |
Bolt With Net |
Carbon Steel |
IS:1367 CL-4 |
STD |
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8. |
1 |
Hinge Pin |
Stainless Steel |
IS:1570 PARTV |
VV/CH/HP/ |
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9. |
1 |
Flap Retaining Nut |
Stainless Steel |
IS:1570 PARTV |
STD |
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10. |
1+1 |
Gasket |
Rubber |
IS:638 TYPE B |
VV/CH/HP/ |
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11. |
1 |
Cover |
G. Cast Iron |
IS:210FG 200 |
STD |
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12. |
1 |
Hing Pin Retaining Plug |
Carbon Steel/Leaded Tin Br. |
IS:7274/IS:318LTB2 |
STD |
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13. |
1 |
Air Release Plug |
Carbon Steel/Leaded Tin Br. |
IS:7274/IS:318LTB2 |
STD |
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14. |
2 |
Packing |
Rubber |
IS:638 TYPE B |
STD |
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15. |
1 |
Split Pin |
Stainless Steel |
IS:1570 PARTV |
STD |
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Salient Feature
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Bronze / Stainless Steel Trim
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Rubber Faced Flap
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Compact Design
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Renewable Parts
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Body Seat Ring Sleeve Type
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Perfect Interchangeability of components
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Seat Taper Type
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Spares Available
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Dimension Table
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Size |
ΦB
±1.0 |
L
±2.0 |
ΦD
±2.0 |
T
+2.0
-0.0 |
Drilling Detail |
PCD
±1.0 |
X
(Size x Length) |
Y
(NO) |
ΦA
±2.0 |
ΦE
±5.0 |
ΦF
±5.0 |
ΦH
±5.0 |
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ΦM
±0.5 |
N |
ΦP(PCD)
±1.0 |
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50 |
50 |
200 |
165 |
16 |
19 |
4 |
125 |
130 |
1/2"x2½" |
6 |
158 |
10 |
10 |
163 |
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65 |
65 |
240 |
185 |
16 |
19 |
4 |
145 |
139 |
1/2"x2½" |
6 |
165 |
10 |
10 |
170 |
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80 |
80 |
260 |
200 |
21 |
19 |
4 |
160 |
164 |
1/2"x2½" |
6 |
191 |
10 |
10 |
180 |
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100 |
100 |
300 |
220 |
22 |
19 |
4 |
180 |
204 |
1/2"x2½" |
8 |
232 |
12 |
10 |
220 |
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125 |
125 |
350 |
250 |
22.5 |
19 |
8 |
210 |
209 |
1/2"x2½" |
8 |
235 |
12 |
10 |
235 |
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150 |
150 |
400 |
285 |
23 |
23 |
8 |
240 |
251 |
5/8"x3" |
10 |
287 |
16 |
12 |
275 |
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200 |
200 |
500 |
340 |
24.5 |
23 |
8 |
295 |
306 |
5/8"x3" |
10 |
340 |
20 |
16 |
320 |
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250 |
250 |
600 |
395 |
26 |
23 |
12 |
350 |
361 |
5/8"x3" |
14 |
395 |
22 |
16 |
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300 |
300 |
700 |
445 |
27.5 |
23 |
12 |
400 |
411 |
5/8"x3" |
14 |
445 |
25 |
16 |
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Test Pressure Table
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PN
Rating |
Valve Shell Test |
Valve Seat Test |
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Pressure
(KG/CM) |
Duration
(Minute) |
Pressure
(KG/CM) |
Duration
(Minute) |
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PN 1.0 |
15 |
5 |
10 |
2 |
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PN 1.6 |
24 |
5 |
16 |
2 |
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Notes
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All Dimensions are in MM Except
hardware.
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Tolerance in height ±5.0MM.
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Flanges details are as per IS :
1538 Flanges drilling as per other std can be provided.
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Valves are designed as per IS :
5312 Part l Hydrostatic Pressure Table as per IS : 5312.
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