Page 304 - 4300 Catalog Cover.pdf

N12 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
4300 Catalog Diagnostic, Orifice, Bleed Adapters,
Screen and Specialty Fittings
Dimensions and pressures for reference only, subject to change.
Screen Fittings
Introduction
Parker screen fittings ensure the final measure of protection
against particles that find their way into a system (even a
properly filtrated one) during installation, maintenance, failure
of components or by other means. Screen fittings provide a
vital safeguard for critical components against damage due to
contamination. They are intended to work in conjunction with
a good filtration system and are available with screens that
retain particle sizes from 480 to 65 micron.
Parker screen fittings are ideal for protecting:
• Gauges and instrumentation
• Critical hydraulic components such as pump compensator
load sensing controls, proportional valves, relief valves, etc.
• Precision orifices from clogging
• Expensive components in test bench circuits (against par-
ticle contamination created by failed components)
Design and Construction
Fitting Body. Parker screen fittings utilize standard Seal-Lok
O-ring face seal and Triple-Lok 37° fitting bodies located in
Section B and C respectively in this catalog. (Refer to the
“How to Order” paragraph, later in this section, for a listing of
configurations for screen fittings that are offered as standard).
All screen fittings are manufactured with the micron rating
stamped on the fitting body.
Screen. Screen fittings are constructed with stainless-steel
screen elements. Sizes -6 through -12 fittings are manu-
factured with a dome-style screen, while size -4 fittings are
made with a basket-style screen (see Fig. N7 and N8).Table
N3 displays the various micron ratings for available screens.
Additionally, Parker screen fittings have bi-directional flow
capacity and can be installed in either the tube or port end of
the fitting.
Pressure Ratings
Parker screen fittings have the same dynamic pressure rat-
ings as the equivalent fitting body (without the screen). Refer
to sections Band C for the pressure ratings for Seal-Lok
O-ring face seal and Triple-Lok 37° flare fittings.
Square
Mesh
Number
Nominal
Micron
Rating
40 480*
60 320*
80 230
100 165*
150 125
200 100
325 65
*These micron ratings are
not available as standard
from stock
Table N3 — Micron Ratings for
available screens
Fig. N6 — Screen Fittings.
Fig. N7 — Six dome-style screens and one basket-style screen.
Fig. N8 — Fitting cutaway with dome-style
screen.