From:my-spread.com
How many remote chokes must be present in a 10,000 psi choke manifold?
How many remote chokes must be present in a 15,000 psi choke manifold?

Answer:
For land wells with a MASP of 3000 to 10,000 psi, at a minimum, one choke shall be remotely operable.
For land wells with a MASP greater than 10,000 psi, at a minimum, two chokes shall be remotely operable.
For offshore wells with a MASP of 3000 to 5000 psi, at a minimum, one choke shall be remotely operable.
For offshore wells with a MASP greater than 5000 psi, at a minimum, two chokes shall be remotely operable.