Page 371 - Praxair - Specialty Gases and Equipment Reference Guide

Cryogenic Products

Liquid Nitrogen Handling

All-Stainless Steel Liquid Transfer Hoses
Offering Outstanding Flexibility, Performance, Safety, and Service Life
Liquid transfer hoses are designed to be highly flexible in cryogenic applications.
Constructed with close pitch stainless steel corrugated bore, specially woven
stainless steel braid, and exterior floppy armor casing. ISO 10380 certified for
bend cycle life. Available with machined stainless steel tube ends and flares for
CGA 295 inert applications and CGA 440 oxygen applications. Options include
3/8" MPT one end.
Designed to be highly flexible
Features
n Type 321 stainless steel – n Stainless steel armor casing for safety in cryogenic applications
4.8 inch dynamic bend radius n Stainless steel flare or NPT ends
n 1,160 psi working pressure – n Cleaned and bagged to CGA standards
6,104 psi burst pressure n Standard lengths are 36" and 72".
n T-321 stainless steel core Custom lengths available upon request
n Special stainless steel braid

Optional Features
n Stainless Steel Cryogenic Elbows Stainless steel
Long radius design relieves bending stress
on hose cryogenic elbows

Ordering Information
Part Number Description
PRSUF21-IN3 Inert service, 3 ft – CGA 295 each end
PRSUF21-IN3NP Inert service, 3 ft – 3/8" MPT one end
PRSUF21-IN6 Inert service, 6 ft – CGA 295 each end
PRSUF21-IN6NP Inert service, 6 ft – 3/8" MPT one end
PRSUF21-OX3 Oxygen service, 3 ft – CGA 440 each end
PRSUF21-OX3NP Oxygen service, 3 ft – 3/8" MPT one end
PRSUF21-OX6 Oxygen service, 6 ft – CGA 440 each end Custom lengths are
PRSUF21-OX6NP Oxygen service, 3 ft – 3/8" MPT one end
Note: Standard lengths are 36" and 72". Custom lengths are available available upon request
upon request. Specify length with part number (Example PRSUNSUF21-OX3)

Optional Equipment Standard Assembly
Part Number Option Description Part Number Description
PRSSSL-CR90-8 SS Cryogenic Elbows, CGA 295 M x F ends 6 1/2" Tube PRSUF21IN4EPS Inert service 4' cryo hose with
Section E – Gas Handling Equipment
PRSSSL-CR90-10 SS Cryogenic Elbows, CGA 440 M x F ends 6 5/8" Tube elbow and phase separator

LN2 Tx Unit Dimensions
The LN2 Tx simplifies the transfer of Rigid Aluminum Tube 4 (1.2)
liquid nitrogen from one open vessel to Length, ft (m)
another. The LN2 Tx utilizes a pres- Flex Hose Length, ft (m) 8 (2.4)
surized nitrogen gas source (22-50 Overall Weight, lb (kg) 8.5 (3.9)
psig) to push the liquid nitrogen from Minimum Neck 3.5 (89)
Opening, in (mm)
the target vessel and transfer it to the
receiving vessel at a flow rate up to
approximately 2 liters per minute. Use
of the LN2 Tx avoids the hassles and
safety risks of lifting and pouring heavy
vessels holding liquid nitrogen.

E•370 1-877-PRAXAIR www.praxairdirect.com