Test Pressure Chart

Testing Of Valves : Gate, Globe, Check And Ball Valves

Pressure Tests:

  1. Size 4” and Smaller Up to 1500#
  2. 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

Pressure Tests:

  1. Size 4” and Smaller Up to 1500#
  2. 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
  • When Purchaser Specifies Optional test than this is additional Test
  • Low Pressure Closure test pressure is 60 to 100 PSI
  • No Leakage is allowed for Shell and Back Seat Tests.

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