CVI TRUNNION MOUNTED BALL VALVE TEST PROCEDURE

HYDROSTATIC SEAL TEST API6D 10.3 and 10.4

Sequence Area Pressure Duration(min) Description
SHELL

TEST

A 1.5x PN 6"-10 5 1. Valve in partial open.

2. Set the pressure to 150% PN.

3. Reduce the pressure to 50% PN.

4. Reset the pressure to 150% PN.

5. Hold the pressure for the duration of testing.

B 1.5x PN 12"-18" 15
C 1.5x PN 20"-60" 30
SEAT

TEST

A 1.1xPN 5 Seat hydro seal test at A

end toawrds body B

B Atmospheric
C Atmospheric
A Atmospheric 5 Seat hydro seal test at C

end toawrds body B

B Atmospheric
C 1.1xPN
A 1.1xPN 5 Seat hydro seal test for both A and C

DBB

B Atmospheric
C 1.1xPN

AIR SEAL TEST      API6D 10.4

SEAT

TEST

A Atmospheric 5 Seat air seal test at A

end toawrds body B

B Atmospheric
C 80PSIG(5.5bar)
A 80PSIG(5.5bar) 5 Seat air seal test at C

end toawrds body B

B 80PSIG(5.5bar)
C Atmospheric

PN= Nominal PressureBlue=LiquidYellow=Air

 

GET OUR STOCK PRICE LIST
Join our members club to receive discounts, special pricing, and offers only available by signing up here. You will receive a PDF with stock valve pricing emailed to you immediately upon signup.
We hate spam. Your email address will not be sold or shared with anyone else.