Hansen HA4A series User Manual

MAIN REGULATORS ONLY (AR1, AR3)
Hansen regulators are normally furnished with control
¾" through 6"
¾" through 4"
modules (pilots) installed and tested (see page 3).
(20 mm through
(20 mm through
However, modular regulators less pilots and flanges
150 mm)
100 mm)
are available on order from ¾" to 6" (20 mm to
150 mm). Each AR1 and AR3 includes flange gaskets,
nuts and bolts, and a plugged ¼" FPT outlet pressure
access port. The access port is for connecting outlet
or differential control module sensing lines or gauges.
AR1 is the main regulator body with ONE control
module (pilot) port, control module not included.
AR3 is the main regulator body with THREE control
5" & 6"
module (pilot) ports, for a maximum of three control
modules, not included. The 5" and 6" (125 mm and
(125 mm and 150 mm)
150 mm) AR3 regulators have a single control module
port with connection points for up to three total ports
via mounted pilot piping.
TO ORDER: (Main Regulators only) Specify port size
and catalog number (AR1 or AR3).
AR1 AR3
OPERATION OF REGULATORS
The regulator adapter (top cover) is available with one
control module port or three control module ports. One
control module port is often used for a solenoid valve
or a single pressure regulator. Three control module
ports are often used for a dual regulator and other
multiple function variations.
When the modular regulator has three control module
ports, two are in series (SI and SII) and one is in parallel
(P) . Inlet pressure enters the internal equalization
passage and goes to both the P port and the SI port.
Inlet pressure enters the SII when the control module SI
port is open. When the control module in the SI and SII
port or the P port is open, pressure enters the space
above the piston which forces the main valve seat to
open and regulate flow.
7
R429d
MAR 2002

Hansen HA4A series Specifications

General

Brand	Hansen
Model	HA4A series
Category	Controller
Language	English