Quick Disconnect Couplings - Flipbook - Seite 269
PR Connectors
The PR Tube Connectors feature the
Danfoss automatic self-locking device,
which instantly connects seal pressure
and vacuum lines to straight end tubing
creating a leak-free seal. These units work
on the push-on, pull-o昀昀 principle – the
higher the pressure, the
tighter the hold.
Design allows full flow for quick evacuation and
charging. No restrictive small seal or plunger.
Two locking positions
for highest possible secured seal:
Connection to tube is instantaneous. Just
connect unit to service line, depress the
lock lever, push on over tubing, pressing
昀椀rmly to stop position and actuate cam
lever. This automatically locks the tube in
place for a leak-free seal, ready for pressure
testing, vacuum dehydrating or charging
with refrigerant. To disconnect from
tubing, relieve test pressure, actuate cam
lever 90°, depress lock lever and pull o昀昀.
It’s that simple
AMER region
QUICK SEAL® Tube Connectors
Straight Tube
replacement, which can be done in
seconds. The seal is compressed around
the O.D. of tube and actuated by the
cam lever independent of the locking
mechanism. Since it’s not an end type seal,
the surface condition of the tube’s cuto昀昀
end does not a昀昀ect the seal. It lasts longer
and has a greater sealing area to withstand
the sensitivity of helium and freon testing.
A quick disconnect can be assembled
directly to the male pipe thread inlet port
without the need of a short nipple or
adapter.
Recommended for a range of services
including helium, air, water, vacuum and
most refrigerants. The PR is constructed
with a heat treated and plated steel lock
lever and neoprene seal suitable for
temperatures from -20° to 250° F (-29° to
121° C).
Simpli昀椀ed design eliminates lubrication
requirements and allows easy seal
PART material
Lock Lever
1
LEVER PIN hardened and plated steel
2
SEAL neoprene
3
WEAR WASHER hardened and plated steel
4
BODY anodized aluminium
5
CAM LEVER hardened and plated steel
6
LOCK LEVER hardened and plated steel
7
LEVER SPRING stainless steel
8
SPRING stainless steel
9
SCREWS hardened and plated steel
10
PISTON stainless steel
Locking Cam Lever – compresses seal around
O.D.of tube.
Series HK Socket and
Plug Option
Danfoss Quick Disconnect Couplings Master Catalog
Connector Dimensions
Part Numbers
Tube Size
Minimum Tube Length
O.D. (A)
Length (B)
Inlet (C)
PR Series
PR0250-57
1/4"
1.00"
1.13" rd.
3.50"
1/4" NPT
PR0312-57
5/16"
PR0375-57
3/8"
PR0437-57
7/16"
1.13"
1.38" rd.
3.63"
1/4" NPT
PR0500-57
1/2"
PR0625-57
5/8"
PR0750-57
3/4"
1.38"
2.00" hex
5.25"
3/4" NPT
PR0875-57
7/8"
s When ordering, please specify part number, tube O.D., minimum available tube length, test pressure,
media and media temperature. Tube O.D. tolerance must be +.003/-.005 maximum.
AF435258198969en-000102
269
