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Relieving Regulator
Adjustable
Non-Relieving Regulator
Adjustable
Pneumatic Division
Richland, Michigan 49083
269-629-5000
Installation and Service Instructions:
IS-R75
R75 Series
1/4", 3/8", & 1/2" Regulators
ISSUED: September, 2006
Supersedes:
April, 2006
Doc. #ISR75, ECN #060928, Rev. 3
WARNING
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF
THE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR
RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND
PROPERTY DAMAGE.
This document and other infor mation from The Company, its
subsidiaries and authorized distributors provide product and/or
system options for further investigation by users having technical
expertise. It is important that you analyze all aspects of your
application, including consequences of any failure and review the
information concerning the product or systems in the current product
catalog. Due to the variety of operating conditions and applications
for these products or systems, the user, through its own analysis
and testing, is solely responsible for making the final selection of
the products and systems and assuring that all performance, safety
and warning requirements of the application are met.
The products described herein, including without limitation, product
features, specifications, designs, availability and pricing, are subject
to change by The Company and its subsidiaries at any time without
notice.
EXTRA COPIES OF THESE INSTRUCTIONS ARE AVAILABLE FOR
INCLUSION IN EQUIPMENT / MAINTENANCE MANUALS THAT UTILIZE
THESE PRODUCTS. CONTACT YOUR LOCAL REPRESENTATIVE.
!
Introduction
The
QUBE R75 Pressure Regulator
is a specialized control valve
which reduces the upstream supply pressure level to a specified
constant downstream pressure. Pneumatic equipment that is operated
at a higher than recommended pressure levels wastes the energy
which generates that pressure, creates a potential safety hazard,
and wears prematurely. The QUBE R75 is a balanced poppet,
diaphragm style regulator available in either relieving (standard) or
non-relieving (K suffix after part number) design. It is recommended
that a QUBE F75 or similar filter be installed upstream of the R75
regulator to ensure contaminant free air. Follow these instructions
when installing, operating, or servicing the product.
Application Limits
These products are intended for use in general purpose compressed
media systems only.
Operating Pressure:
kPa
PSIG
bar
Maximum Inlet Pressure
2068
300
21.0
Ambient Temperature Range:
4°C to 49°C
(40°F to 120°F)
Symbols
Installation
All QUBE components are individually tapped (NPT or BSPP) to allow
direct mounting to piping. Also, each QUBE F&L component comes
equipped with the necessary screws and O-rings to enable connection
to other QUBE components of the same series without the need for
pipe nipples or special adaptors. Before installing, blow out pipe line
to remove scale and other foreign matter. This unit has DRYSEAL
pipe threads; use pipe compound or tape sparingly to male threads
only. Install units in pipeline so that flow is with the arrow as indicated
on top face of body. Install as near as possible to equipment serviced.
Reduced Pressure Adjustment
To adjust reduced pressure settings, pull knob out and turn knob
clockwise to increase pressure setting and counter-clockwise to lower
setting. Push knob in to lock adjustment. With relieving-type regulators
the reduced pressure follows adjustment of the screw. With non-
relieving regulators adjustment for lower reduced pressure will not be
obtained until the reduced pressure system is “bled-off” or until air
flow starts.
Maintenance – Cleaning
Note: To clean, it is not necessary to remove regulator from line.
Refer to drawing as guide in reassembly. If the air supply is kept
clean, the regulator should provide long periods of uninterrupted
service. Erratic regulator operation or loss of regulation is most
always due to dirt in the disc area. To clean, shut off air line pressure
and disassemble the regulator. Refer to drawing as a guide to
disassembly and subsequent reassembly. Clean parts with household
soap and blow out body with compressed air. When reassembling
make sure the disc is firmly in place and that the disc stem fits into
the center hole of the diaphragm assembly. Tighten bottom plug more
than hand tight (40 to 50 inch pounds torque).
Note: This regulator is designed for use with compressed air in
industrial applications. For other applications consult factory
before use.
WARNING
Product rupture can cause serious injury.
Do not connect regulator to bottled gas.
Do not exceed maximum primary pressure rating.
!
Safety Guide
For more complete information on recommended application
guidelines, see the Safety Guide section of Pneumatic Division
catalogs or you can download the
Pneumatic Division Safety
Guide
at: www.wattsfluidair.com
WARNING
To avoid unpredictable system behavior that can cause personal
injury and property damage:
• Disconnect electrical supply (when necessary) before
installation, servicing, or conversion.
• Disconnect media source and depressurize all media lines
connected to this product before installation, servicing, or
conversion.
• Operate within the manufacturer’s specified pressure,
temperature, and other conditions listed in these instructions.
• Medium must be moisture-free if ambient temperature is below
freezing.
• Service according to procedures listed in these instructions.
• Installation, service, and conversion of these products must
be performed by knowledgeable personnel who understand
how pneumatic products are to be applied.
• After installation, servicing, or conversion, media and electrical
supplies (when necessary) should be connected and the
product tested for proper function and leakage. If audible
leakage is present, or the product does not operate properly,
do not put into use.
• Warnings and specifications on the product should not be
covered by paint, etc. If masking is not possible, contact your
local representative for replacement labels.
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