Hydrant Pit Valve

Select TRUE statements for hydrant pit valve.

• It is located at the end of hydrant pipeline.

• It is connected to hydrant dispenser's coupler to deliver fuel to aircraft.

• Pilot assembly is required on the valve assembly.

• The valve shall qualify to EI 1583.

Select TRUE statements for hydrant pit coupler.

• It is also known as hydrant intake coupler.

• It is normally incorporated dead-man control system.

• It is permanently located at the hydrant pit.

• It shall qualify to EI 1584 3rd editon.

Identify the part which is marked.

• Pit coupler

• Pit valve

• Pit box

• Pilot assembly

"Inspect for cleanliness of pit box and remove water, product and surface dirt/grit, if any."

The above task shall be performed ....

• Daily

• Weekly

• Monthly

• Yearly

Which of the following periodic inspection for hydrant pit valve is TRUE?

• Monthly test shall include checking the closure time of pit valve.

• Static test is performed to check integrity of seals.

• Static test shall be perform on daily basis.

• Dynamic test can be performed at any flow rate.

What is the purpose of this device?

• To check excessive wear and tear of hydrant pit's API interface.

• To check performance of pilot valve.

• To check condition of seals.

• To perform static test.

Monthly check for intake coupler shall include;

• Check the position and tightness of all nuts and bolts.

• Inspect the position and condition of all locking lugs.

• Check functionality of the seals.

• Inspect condition of poppet and nose seal.

What device is used to check wear and tear of intake coupler's locking nuts?

• Carter 60554ST1 wear gauge

• Carter 61362 wear gauge

• Lawton A4136 wear gauge

• Carter 61657-2 wear gauge

Why we need to check for excessive wear of locking nuts?

• To prevent intake couple being ejected while in use.

• It is required by local authority.

• To prevent fuel leak from pit valve.

• It is a common practice.

What shall we do if Carter 60554ST-1 wear gauge slides over the API interface?

• Continue using the pit valve without any any action taken.

• Continue using the pit valve with caution.

• Stop using the valve and replace the interface.

• Stop using the valve indefinitely.