Norgren 11-008 Installation Instructions

11-008

Installation & Maintenance

Instructions

4.

Install a pressure gauge in a gauge port on the 11-008, or
to the application point downstream of the 11-008. Do not
connect the gauge to the pilot pressure line, as this
pressure is not the same as the 11-008 outlet pressure.
Locate the gauge next to the pilot regulator. Plug unused
gauge ports.

5. Install a general purpose filter upstream of the regulator.

ADJUSTMENT

1. Before applying inlet pressure to regulators, turn pilot
regulator adjustment counterclockwise to remove all
force on regulating spring.

2. Apply inlet pressure, then turn pilot regulator adjustment
clockwise to increase and counterclockwise to decrease
pressure setting.

3. Always approach the desired pressure from a lower
pressure. When reducing from a higher to a lower
setting, first reduce to some pressure less than that
desired, then bring up to the desired pressure.

DISASSEMBLY

1. Regulator can be disassembled without removal from air
line.

2. Shut off inlet pressure to pilot regulator and to the 11-

008. Reduce pressure in inlet and outlet lines to zero.

3. Turn pilot regulator adjustment counterclockwise to
remove all force on regulating spring.

4. Disassemble in general accordance with the item
numbers on exploded view. Do not remove valve seat
(13) unless replacement is necessary. Remove o-ring (7)
using a hook shaped tool, taking care not to damage o­ring seating surfaces and valve seat (13).

CLEANING

1. Clean parts with warm water and soap

2. Rinse and dry parts. Blow out internal passages in body
(15) with clean, dry compressed air.

3. Inspect parts. Replace those found to be damaged.

ASSEMBLY

1. Lubricate o-rings and surfaces in contact with o-rings
with a light coat of good quality o-ring grease.

2. Assemble the unit as shown on the exploded view

3. Torque Table
Item Torque Inch-Pounds (Nm)
13

(Valve seat - if removed)

15 to 20 (1.7 to 2.3)
8 (Bottom plug) Hand tighten
1 (Screw) 1/2" regulators - 45 to 55 (5.1 to 6.2)

3/4" & 1" regulators - 50 to 70 (5.6 to 7)

in a diagonal sequence

WARNING

These products are intended for use in industrial
compressed air systems only. Do not use these products
where pressures and temperatures can exceed those listed
under Technical Data.

If outlet pressure in excess of the regulator pressure
setting could cause downstream equipment to rupture or
malfunction, install a pressure relief device downstream of
the regulator. The relief pressure and flow capacity of the
relief device must satisfy system requirements.

The accuracy of the indication of pressure gauges can
change, both during shipment (despite care in packaging)
and during the service life. If a pressure gauge is to be
used with these products and if inaccurate indications may
be hazardous to personnel or property, the gauge should be
calibrated before initial installation and at regular intervals
during use.

Before using these products with fluids other than air,
for non industrial applications, or for life-support systems
consult Norgren.

TECHNICAL DATA

Fluid: Compressed air
Inlet pressure range: 10 psig (0.7 bar) to 400 psig

(27.6 bar). For best performance, inlet pressure
should be at least 10 psig (0.7 bar) greater than the
desired regulated pressure, but must not exceed the
specified maximum.

Operating temperature: 0° to +175°F (-20° to +80°C).

Air supply must be dry enough to avoid ice formation
at temperatures below +35°F (+2°C).

Typical flow with a conventional pilot regulator at 150

psig (10.3 bar) inlet pressure, 100 psig (6.9 bar)
set pressure, and a droop of less than 5 psig (0.35
bar) from set:

1/2" ports: 70 scfm (33 dm

3

/s)

3/4" ports: 110 scfm (52 dm

3

/s)

1" ports: 180 scfm (85 dm

3

/s)

Maximum bleed rate at 50 psig (3.5 bar) outlet

pressure: 0.34 scfm (0.16 dm

3

/s). Maximum bleed

rate occurs under dead-end (no flow) conditions.

Port sizes:

Main: 1/2", 3/4", 1"
Gauge: 1/8"
Pilot: 1/4"

Thread type:

Main and gauge ports: PTF, ISO G, or ISO Rc
Pilot port: PTF with PTF main ports, ISO G with

ISO G and ISO Rc main ports

Materials:

Body: Zinc
Bonnet: Aluminum
Bottom plug:

1/2", 3/4 ports: Brass

1" ports: Glass filled nylon
Valve: Brass
Elastomers: Nitrile

REPLACEMENT ITEMS

Repair kit - items circled on exploded view

1/2" ported regulators............................................695-01

3/4" and 1" ported regulators..................................696-01

INSTALLATION

1. Shut off air pressure. Install regulators in air line -

● upstream of lubricators and cycling valves.

● at any angle.

● install the 11-008 pilot operated regulator as close as

possible to the device being serviced.

● install the pilot regulator at any convenient, accessible

location.

2. Use pipe thread sealant on male threads only when
making the following pipe connections. Do not allow
sealant to enter interior of regulator.

● Connect inlet and outlet air lines to 11-008 main ports

with air flow in direction of arrow on body.

● Connect inlet and outlet air lines to the main ports of a

relieving type pilot regulator. The inlet port of the R40
and R41 is marked IN, and the outlet port is marked
OUT. The direction of air flow thru the 11-104 pilot is
indicated by an arrow on the bottom of the body.

● Connect the outlet of the pilot regulator to the pilot port

in the top of the 11-008 bonnet. This is the pilot
pressure line.

3.Special Instructions for a Feedback Pilot:

Connect one end of the feedback line to the feedback port
on the pilot regulator. The feedback port on the R41 is
marked FDBK. The 11-104 has two 1/8" PTF feedback
ports. Plug the unused feedback port. Connect the other
end of the feedback line to a gauge port on the 11-008 or,
if maximum precision pressure regulation is desired, to
the application point downstream of the 11-008. Keep the
feedback line as short as possible and unrestricted. Use
1/4" or 3/8 " OD copper tube for the feedback line. Plug
unused gauge ports.

Warning - Feedback Pilot Regulators

Norgren manufacturers two feedback pilot
regulator types (the R41 and the 11-104). Use the
R41, the 11-104-002, or the 11-104-003 feedback
pilot regulator to control outlet pressures greater than
100 psig (7 bar). Use the Norgren 11-104-001
feedback pilot regulator to control outlet pressures at
or less than 100 psig (7 bar).

The feedback line must sense 11-008 outlet
pressure and must be connected before turning on air
pressure. If the feedback line is not connected, 11­008 outlet pressure will rapidly increase to inlet
pressure when the feedback pilot adjusting knob is
turned clockwise.

IM-422.250

(2/02)

Replaces NIP-205

Pilot Operated Regulator

© Norgren 2002

Figure 2. Feedback Pilot Installation

Figure 1. Conventional Pilot Installation

a subsidiary of IMI plc

SUPPLY
AIR

SUPPLY
AIR

PILOT
OPERATED
REGULATOR

CONVENTIONAL
PILOT REGULATOR

PILOT
PRESSURE
LINE

OUTLET

1

2

5

6

16

15

14

13

12

11

10

9

8

SUPPLY

AIR

SUPPLY
AIR

PILOT OPERATED
REGULATOR

AIR

FEEDBACK
PILOT
REGULATOR

3

4

7

17

FEEDBACK
LINE

PILOT
PRESSURE
LINE

OUTLET

AIR