Hansen HA4AO - User Manual

ADDITIONAL FEATURES
Tolerant of Dry Systems
For Ammonia, R22, R134a and other Hansen-
Approved Refrigerants
Wide Range of Options
Inlet, Outlet, or Differential Pressure
Wide Pressure Ranges
Electric Shut-Off, Dual, or Wide-Opening Available
Safe Working Pressure: 400 psig (28 bar g)
CSA Certified, CRN for Canada
Weld-In-Line Available; Contact Factory
INTRODUCTION
These advanced-design, strong-bodied, precision-
manufactured MODULAR regulators are superior in their
ability to overcome dirt and sticky oil during opening
and tight closing. Models are available for nearly every
control function requirement of industrial ammonia and
commercial halocarbon refrigeration. These regulators
are ideal for cold storage plants, poultry plants, meat
packing, fish processing, freezers, ice plants, breweries,
bottling plants, heat recovery units, petrochemical
plants, pharmaceutical plants, supermarkets, and many
others.
APPLICATIONS
Evaporator Pressure Control
Defrost Pressure Control
Condensing Pressure Regulation
Receiver Pressure Control
Hot Gas Bypass Capacity Regulation
Suction Pressure Control
Air or Liquid Temperature Regulation
Internal System Pressure Relief
V-PORT
MODULATION
IRON BODY
DUCTILE
DIRT WIPING
DISC-PISTON
MANUAL OPENING
STEM
RELIABLE
TEFLON SEAT
MODULAR PI
LOTS
HERE
SPRING
STAINLESS STEEL
DUCTILE
STRONG
GAUGE PORT
1/4'' NPT
KEY FEATURES
Contents Page
Regulator Variations 3
Capacities 4–5
Control Modules (Pilots) 6
Main Regulators Only (AR1, AR3) 7
Operation and Adjustment 8–11
Installation Dimensions 12–13
Parts List 14–18
Service and Maintenance, Abbreviations 19
Ordering Information, Conversions 20
Specifications, Applications,
Service Instructions & Parts
HA4A MODULAR
PRESSURE REGULATORS
¾" THROUGH 6" PORT
(20MM THROUGH 150MM)
Bulletin R429d
AUG 2015
Various Connection
Styles and Sizes
for Refrigerants
HA4AB Regulator with Electric Wide Opening

Summary

HA4 A Regulator Introduction and Features

Introduction to HA4 A Regulators

Overview of advanced-design, strong-bodied, precision-manufactured MODULAR regulators.

HA4 A Regulator Applications

Lists various industrial applications for HA4A regulators.

Key Features of HA4 A Regulators

Highlights modular pilots, strong body, reliable Teflon seat, and V-port modulation.

HA4 A Regulator Variations and Capacities

HA4 A Regulator Variations

Describes various HA4A regulator models like Standard, Outlet, Shut-Off, Wide Opening, etc.

Suction Vapor Capacities

Provides tonnage capacities for R717 and R22 refrigerants based on port size and pressure drop.

Hot Gas and Discharge Gas Capacities

Details capacities for hot gas defrost and discharge gas applications.

Control Modules and Operation

HA4 A Control Module (Pilot) Types

Explains different pilot types (Inlet, Outlet, Reseating Relief, Solenoid, etc.) for HA4A regulators.

HA4 A Standard Regulator Operation and Adjustment

Details how to operate and adjust the standard HA4A regulator.

Installation, Service, and Parts Information

HA4 A Regulator Installation Guidelines

Covers proper installation procedures to ensure safe and effective operation.

HA4 A Regulator Installation Dimensions

Provides detailed physical dimensions for various HA4A regulator sizes.

HA4 A Parts Lists (Modules and Main Regulators)

Lists parts for control modules and main regulator bodies across various sizes.

HA4 A Regulator Service and Maintenance

Provides guidance on troubleshooting, disassembly, and parts replacement for HA4A regulators.

HA4 A Regulator Ordering Information

Guides users on how to specify and order HA4A regulators, including options and accessories.

Hansen HA4AO Specifications

General

Brand	Hansen
Model	HA4AO
Category	Controller
Language	English