Test Pressure Chart
Testing Of Valves : Gate, Globe, Check And Ball Valves
Pressure Tests:
- Size 4” and Smaller Up to 1500#
- Size 6” and Larger Up to 600#
|
TEST |
GATE |
GLOBE |
CHECK |
BALL |
| 1 |
Shell |
Required |
Required |
Required |
Required |
| 2 |
Back Seat |
Required |
Required |
NA |
NA |
| 3 |
L.P. Closure |
Required |
Optional |
Optional |
Required |
| 4 |
H.P. Closure |
Optional |
Required |
Required |
Optional |
Test Durations (Seconds) :
| Size |
Shell |
Shell/Seat (API:594) |
Back Seat |
Seat |
| Up to 2″ |
15 |
60 |
15 |
15 |
| 2 1/2″ to 6″ |
60 |
60 |
60 |
60 |
| 8″ to 12″ |
120 |
60 |
60 |
120 |
| 14″ & Above |
300 |
120 |
60 |
120 |
Allowed Leakage per Minute :
Size |
All Resilien t seated valves |
Metal Seated (Except Check Valves) |
Metal Seated Check Valves |
| Hydro (Drops) |
Air (Bubbles) |
Hydro (Drops) |
Air (Bubbles) |
˂2″ |
0 |
0 |
0 |
3xSize in Inches) |
(0.042xSize in Inches) |
| 2″ to 6″ |
0 |
12 |
24 |
Cubic |
| 8″ to 12″ |
0 |
20 |
40 |
Centimetre |
| 14″ &above |
0 |
28 |
56 |
Par Minute |
Per Hour |
API 6D :Duration For Testing Of Valves Gate, Globe, Check And Ball Valves
|
SIZE |
½”-4” |
6”-10” |
12”-18” |
20” &Above |
| 1 |
Shell |
2 Minutes |
5 Minutes |
15Minutes |
30 Minutes |
| 2 |
Back Seat |
2 Minutes |
5 Minutes |
5 Minutes |
5 Minutes |
| 3 |
L.P.Closure |
2 Minutes |
5 Minutes |
5 Minutes |
5 Minutes |
| 4 |
H.P.Closure |
2 Minutes |
5 Minutes |
5 Minutes |
5 Minutes |
Allowable Leakage in Seat Test as per ISO 5208-1993 (E)
- Hydro Test : – 0.1mm³/Sec x DN
- Pneumatic Test : – 30 mm³/Sec x DN
Test Pressure : Kg/Cm²
| Class |
Shell Hydro |
Back Seat |
Hydro Seat |
Pneumatic Seat |
| 150# |
32 |
23 |
23 |
06 |
| 300# |
79.5 |
58.5 |
58.5 |
06 |
| 600# |
156.5 |
116.5 |
116.5 |
06 |
| 800# |
210 |
154 |
154 |
06 |
| 900# |
236 |
172.5 |
172.5 |
06 |
| 1500# |
392 |
288.5 |
288.5 |
06 |
| 2500# |
652.5 |
478.5 |
478.5 |
06 |
| PN-1 |
2 |
1 |
1 |
OPTIONAL |
| PN-2.5 |
4 |
2.5 |
2.5 |
OPTIONAL |
| PN-6 |
10 |
6 |
6 |
OPTIONAL |
| PN-10 |
16 |
10 |
10 |
06 |
| PN-16 |
24 |
17.6 |
17.6 |
06 |
| PN-25 |
37.5 |
27.5 |
27.5 |
06 |
| PN-40 |
60 |
44 |
44 |
06 |
| PN-160 |
240 |
176 |
32 |
06 |
Pressure Testing Of Valves
1) Minimum test duration (in seconds) for globe, Check & Ball Valves as per BS EN12266 Part-1
Nominal Size |
Shell Test |
Seat Test |
Back Seat Test |
| Metal Seat |
Soft Seat |
| ˂50mm |
15 |
15 |
15 |
15 |
| 65mm to 200mm |
60 |
30 |
15 |
30 |
| 250mm to 450Mmm |
180 |
60 |
30 |
60 |
| 500mm ˂180mm |
120 |
60 |
120 |
OPTIONAL |
2) Minimum test duration (in seconds) for globe Valve as per BS:1873
| Nominal Size |
Shell Test |
Seat Test |
Back Seat Test |
| ˂50mm |
15 |
15 |
15 |
| 65mm to 150mm |
60 |
60 |
15 |
| 200mm to 300Mmm |
120 |
120 |
15 |
| 350mm ˂300mm |
120 |
150 |
OPTIONAL |
3) Minimum test duration (in seconds) for Check Valve as per BS:1868
| Nominal Size |
Shell Test |
Seat Test |
| ˂50mm |
15 |
15 |
| 65mm to 150mm |
60 |
60 |
| 200mm to 300Mmm |
120 |
120 |
| 350mm ˂300mm |
120 |
OPTIONAL |
