Page 259 - 4300 Catalog Cover.pdf

M5

Parker Hannifin Corporation

Tube Fittings Division

Columbus, Ohio

http://www.parker.com/tfd

4300 Catalog

Hydraulic Flanges and Components

Dimensions and pressures for reference only, subject to change.

Fig. M3 – Four-Bolt Flange Connection (SAE J518)

Code 61/62 Clamp

Tube or Hose End

Flange Head

O-Ring

Clamping Bolt

How Flange Connections Work

The four-bolt flange connection (SAE J518) is a proven leak-free

connection, especially suited for larger sizes. As a result, it has

achieved worldwide acceptance.

The connection’s success is in its simplicity. It is a static face

seal using a high durometer O-ring for the seal and clamps

and bolts for holding power as shown in Fig. M3. Alternatively,

a bonded seal plate is between the port face and the flat face of

a mechanically formed (flanged with Parflange

®

process) tube

as shown

in

Fig. M4

to

achieve the same results.

The (O-ring) seal is compressed between the bottom of the

groove in the flange head and the flat surface of the port or

flange pad, providing a reliable soft seal.The alternate seal plate

has a high durometer bonded rubber seal on the inside edge,

which compresses between the two flat surfaces, providing a

soft seal with the same reliability. A metal-to-metal contact at

the outer face of the flange with the port face keeps the seal

from extruding under pressure. This metal-to-metal contact is

maintained by the clamping force provided by tightening the

bolts via the clamps.

This simple design provides several advantages over threaded

port connections, such as NPTF, SAE, BSPP, ISO 6149, etc.,

in larger sizes:

• Ability to connect up to 5 inch O.D tube (Code 61

only)

• Much lower tightening torque required from the four

bolts compared to that required for equivalent size

threaded port

• Less tightening torque means smaller wrenches and

wrench swing clearances — providing ease of as-

sembly in tight quarters

• Up to 6000 psi capability through 2” size (Code 62

only)

• Single seal point between tube/pipe/hose assembly

and the port

• Ease of disassembly through use of split clamps

The connection has one disadvantage — it requires a larger

area (foot print) on the component than an equivalent threaded

port.

Assembly and Installation

Please refer

to

SectionT

fo

r theassemblyand installation instruc-

tions for Hydraulic Flanges and Components fittings.

Fig. M4 – Formed Tube with ISO 6162 (SAE J518) Connection

Parflange Sleeve

Code 61/62 Clamp

Seal Plate

Tube

Feature

Advantage

Benefit

Conform to SAE J518 and

ISO 6162

Controls dimensions and tolerances of code 61 and

62 port connections

Insures interchangeability and consistency

Forged Construction

Reliable, long life performance

No downtime, reduced costs

Compact envelope size, no sharp edges

Reduced weight

Over 60 Configurations

Flexibility in plumbing, match system needs

Best solution and best value

Parflange Technology

Designed to be used with Code 61/62 fittings

Eliminates messy and time consuming brazing

process

Mounting Hardware

Grade 8 bolts standard

Performs in rigorous applications for the life of the

flange

Flange Kits

Flange with hardware for mounting (o-ring, bolts and

lockwashers)

Reduces order and assembly error