Specifications, Applications,
Service Instructions & Parts
GAUGE, PURGE, AND
TRANSDUCER VALVES
Bulletin G409d
JAN 2013
1/4" – 1/2" (7mm – 13mm)
MPT or FPT Globe & Angle
for Refrigerants
H9490: Transducer Valve
HGV1: Long Neck
INTRODUCTION
These specially designed refrigerant gauge, purge, and
transducer valves feature tough, forged steel bodies,
compact size, and polished stainless steel stems. The
patented O-ring plus packing dual seal design and
polished stainless steel stem virtually eliminates stem
seal leakage. Safety stems are designed to be non-
removable from the body to avoid dangerous stem
"blow out".
APPLICATION
These Hansen-made valves are suitable for ammonia,
R22, R134a, CO2 and other approved refrigerants.
They are available with seal caps, bar handles or bare
stems. They are often used to isolate pressure gauges
on regulators and safety relief valves. These valves
may also be used for pumpout and purging. They are
not recommended for oil drain because the port is too
small for viscous oil. The Long Neck
®
valves provide
additional length for insulation and pressure gauge
turning clearance. The transducer valve accommodates
calibration or device replacement without system
pumpdown.
MATERIAL SPECIFICATIONS
Body: Forged steel, ASTM A105, zinc plated
(H9490 not plated)
Stem: Stainless steel, polished, ¼" square flats
Stem Packing: Graphite composite plus
neoprene O-ring
Packing Nut: Steel, zinc plated
Seal Cap: Glass filled polymer
Seal Cap O-ring: Neoprene
Bar Handle: Steel, zinc plated
Safe Working Pressure: 400 psig (28 bar) SWP
600 psig (41 bar) available upon request
Operating Temperature: -60°F to 240°F
(-50°C to +115°C)
KEY FEATURES
OPTIONAL BAR HANDLE
SEAL CAP
NON-REMOVABLE
SAFETY STEM
FORGED
STEEL BODY
POLISHED STAINLESS
STEEL STEM
O-RING PLUS PACKING
STEM SEAL
LONG NECK
AVAILABLE
ADDITIONAL FEATURES
Globe and angle valve available
Heavy duty forged steel body
Long Neck gauge valve available
Unique Transducer / Gauge valve
Interchangeable seal caps and bar handles
