Hydraulic Test Instruction Ball Valves

Table of Contents

I – TOPIC AND RANGE OF APPLICATION

This instruction describes the procedure and equipment for the pneumatic and hydraulic test for the 490 valves to our suppliers and external service providers.

II – HISTORY OF MODIFICATIONS

DATEINDICEDETAILS OF MODIFICATIONSPAGES
23/02/2015ACreationall
    
    
    
    

III – Plan

  1. Equipement for the implementation
  2. Test process

IV – ANNEXES

INDICEA
DATE CREATION /MODIF.23/02/2015
CREE OR MODIF. PARR. DUBROCARD
VERIFIED BYF.FRANCESFF
APPROUVED BYM.VEVAUDMV
  1. Equipment for the implementation

– (1) Pneumatic test bench (Air injected underwater)

pneumatic test bench 1
pneumatic test bench 1

– (2) Hydraulic test bench (Water injected)

hydraulic test bench
hydraulic test bench
  • Test process
pneumatic air test under water
pneumatic air test underwater

      

no bubbles
no bubbles

        

Pneumatic air test underwater, 7 bars for 10 seconds

  1. The valve is opened.

Air is injected from the male or female side (bonnet side); the other side must be waterproof.

no pressure drop
no pressure drop
  • The valve is closed.

Air is injected from the male or female side (bonnet side). The other side must be waterproof.

  • Take the valve, and open it.

There must be a sound at the opening (discharge of air).

This proves the excellent sealing of the valve.

Hydraulic test, 45 bars for 30 seconds

  1. Valve opened

Water is injected from the male or female side (bonnet side) the other side and must be waterproof.

no leakage to the ball
no leakage to the ball

2) Valve closed

The ball valve is tested in positions closed one after the other to check the sealing of the ball.

The valve is closed; water is injected from the male or female side (bonnet side)

tested in position closed
tested in position closed

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