APPLICATION

The PEPCO gas pressure regulator type 12P will keep constant a controlled quantity, i.e. the outlet pressure, by actuating a control element.

TECHNICAL SPECIFICATIONS

CONNECTION

MATERIAL

SIZING    EQUATION

For the determination of the device size, the characteristic value KG at the lowest inlet pressure pe [bar] and the highest flow in standard state qn [m3/h] is to calculate

Supercritical relief:

Subcritical relief:

Consequently, for natural gas (d = 0.6), the required device size can be read from the lower table. For other gases, the flow rate is to convert in natural gas before.

Example 1:

pe min = 32 bar qn max = 25000 m3/h pa max = 8 bar Natural gas (f = 1.0)

Installation

Before installing the pressure regulator in the piping, the following must be checked:

• the upstream and downstream flanges must be parallel and the pressure regulating unit must be capable of being fitted without undue stress.
• the upstream piping must be cleaned from all impurities (sand, welding slag, etc.)
• the pressure regulator must not be visibly damaged.
• the inlet and outlet chambers of the Regulator shut off valve must be perfectly clean.

After these checks have been made, the unit can be installed in the piping, making sure that the direction of gas flow corresponds to the arrow on the regulator shut off valve’s body. We recommend performing installation with the valve body in horizontal alignment.