CPF High Pressure Hose and Fitting Datsheet0 pages

Crystal Pressure Fittings  CPF 
Common Specifications (applies to all CPF fittings in this datasheet)
DESCRIPTION

CPF is an improved cone type fitting system that adds a unique o-ring sealing system which permits leak free
connections without tools. CPF fittings can be directly connected to ¼” medium pressure cone type fittings from
other manufacturers*, provided that wrenches are used to complete the connection. The fittings of the CPF system

have been designed and tested to comply with ASME B31.3-2008, Chapter IX: High Pressure Piping.

*tHiP: 1/4" Female and Male Medium Pressure (LF4 & LM4 series)
Autoclave Engineers: 1/4” Female and Male Medium Pressure
t (SF250CX series)
t

tWrench-tight:t -40 to 150°C
M
t inimum Hose Bend Radius:t 1.0" (25mm)

Non-Crystal MP adapters require wrench tightening.

CONSTRUCTION

Cone Angle:t 60°, nominal

Hose is not compatible with dioctyl sebacate fluid.

Internal Hose Diameter:t 0.08" (2 mm)

Hose Weight:t 0.0179 lbs/ft (26.6 g/m)t
CPF Female O-rings:tAS568A-012, Viton® 90
O-ring Lubricant:t Molykote® 55

CAUTION: To achieve CPF maximum allowable working
pressures no o-ring substitutions are allowed.

RECOMMENDATIONS
t Thread Lubricant:t Use a process compatible fluid
t

Wrench Torque:t 100–140 in-lbs (11.3–15.8 Nm)

5

Tube Fittingt

10

7

AN4 Fittingst

11

8

Pump Adaptert

11

8

Non-Crystal MP Adapterst

12

BSP Fittingst
BSP Fitting Kitst
M20 Fittingst

9

When used with gases, fuels (liquid or gas) and refrigerants, permeation (i.e., seepage) will occur from inside the hose. In
enclosed or unventilated spaces this permeation may result in high concentrations of vapors which are potentially flammable,
explosive or toxic.
Care must be taken to protect hoses from snagging, kinking, bending smaller than the minimum bend radius, and cutting. Any
hose that has been damaged in any way should be removed from service and discarded immediately.

External Hose Diameter:t 0.235" (6 mm)t

10

Due to the wide variety of operating conditions it may be subject to, Crystal Engineering, as well as Distributors and
Representatives of Crystal products, do not warrant that this hose is suitable for any specific use. This hose is not for use with
compressed natural gas (CNG).

tFittings:t High Strength 316 Stainless Steel
tHose:t Polyamide core
tt
with urethane jacket

Transmitter Fittingst

Note Regarding CPF Hose (MPH-X)

Thread Type:t 7/16-20 UNF 2B

2

NPT Fitting Kitst
Most fittings thoughout this document meet the MAWP
specificaton of 10000 psi / 700 bar / 70 MPa. Exceptions are
labeled with an icon ( 1 , 5 , 15 ) and a key to indicate the
pressure rating.

tFinger-tight:t -20 to 50°C

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CPF Fittingst
NPT Fittingst

PERFORMANCE

t
Maximum Allowable
t Working Pressure (MAWP):t 10 000 psi / 700 bar / 70 MPa

Quick Links

Autoclave Engineers Fluid Components is a division of Snap-tite, Inc.
HiP is High Pressure Equipment Company.
Molykote is a registered trademark of Dow Corning Corporation.
Viton is a registered trademark of DuPont Performance Elastomers.
Swagelok is a registered trademark of Swagelok Company.

If a torque wrench isn’t practical to use, hand tighten then
tighten an additional 20 degrees using a wrench.

4895 . F  Crystal Pressure Fittings Data Sheet
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