what is this?

[miggymarky]

Anyone know what this brass valve is as it is leaking.

 

[rtbcomp]

It stays open until pressure builds up to about 20 psi then it closes. It's to allow the pump to reach running speed before a load is imposed on the motor.

 

[miggymarky]

It stays open until pressure builds up to about 20 psi then it closes. It's to allow the pump to reach running speed before a load is imposed on the motor.

Thank you very much rtbcomp.