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11-002 |
Pressure Regulator |
Installation & Maintenance |
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Instructions |
TECHNICAL DATA |
DISASSEMBLY |
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Fluid: Compressed air |
1. Regulator can be disassembled without removal from air |
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Maximum pressure: 400 psig (28 bar) |
line. |
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Regulator type: Relieving or non-relieving diaphragm |
2. Shut off inlet pressure. Reduce pressure in inlet and outlet |
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Operating temperature: -30 to +175°F (-34° to +80°C). Air |
lines to zero. |
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supply must be dry enough to avoid ice formation at |
3. Turn adjustment (1) counterclockwise to remove all force |
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temperatures below +35°F (+2°C). |
on regulating spring (6). |
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Main port size: 1/4", 3/8", or 1/2" |
4. Disassemble in general accordance with the item numbers |
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Main port thread form: PTF, ISO Rc, or ISO G |
on exploded view. Do not remove valve seat (14) unless |
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Gauge ports: |
replacement is necessary. Remove o-ring (8) using a hook |
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1⁄8 PTF with PTF main ports |
shaped tool, taking care not to damage o-ring seating |
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Rc1/8 with ISO G and ISO Rc main ports |
surfaces and valve seat. |
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Outlet pressure adjustment ranges:** |
CLEANING |
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5 to 50 psig (0.3 to 3.5 bar) |
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5 to 125 psig (0.3 to 8.5 bar) |
1. Clean parts with warm water and soap. |
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5 to 250 psig (0.3 to 17 bar) |
2. Rinse and dry parts. Blow out internal passages in body |
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** Outlet pressure can be adjusted to pressures in excess |
with clean, dry compressed air. |
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of, and less than, those specified. Do not use these |
3. Inspect parts. Replace those found to be damaged. |
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units to control pressures outside of the specified |
ASSEMBLY |
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ranges. |
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Typical flow with 150 psig (10 bar) inlet pressure, 90 psig |
1. Lubricate o-rings, adjusting screw threads and tip (1), |
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(6.3 bar) set pressure, and a 15 psig (1 bar) droop from |
center bore in bottom plug (9), valve stem and body (13), |
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set: |
with a light coat of good quality o-ring grease. |
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1/4" and 3/8" ports: 110 scfm (52 dm3/s) |
2. Assemble the unit as shown on the exploded view. |
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1/2" ports: 260 scfm (123 dm3/s) |
3. Torque Table |
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Materials: |
Item |
Torque Inch-Pounds (Nm) |
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Body: Zinc |
14 (Valve seat - if removed) |
15 to 20 (1.7 to 2.3) |
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Bonnet: Aluminum |
9 (Bottom plug) |
Hand tighten |
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Valve: Brass and nitrile |
3 (Screw) |
45 to 55 (5.1 to 6.2) in a |
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Valve seat: Brass |
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diagonal sequence |
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Elastomers: Nitrile |
WARNING |
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Bottom plug: |
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1/4" and 3/8" ports: Brass |
These products are intended for use in industrial |
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1/2" ports: Nylon |
compressed air systems only. Do not use these products |
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where pressures and temperatures can exceed those listed |
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REPLACEMENT ITEMS |
under Technical Data. |
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Service kits (includes items circled on exploded view) |
If outlet pressure in excess of the regulator pressure |
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1/4" and 3/8" Ported Regulators: |
setting could cause downstream equipment to rupture or |
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Relieving.................................................................529-03 |
malfunction, install a pressure relief device downstream of |
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Non-relieving ..........................................................529-01 |
the regulator. The relief pressure and flow capacity of the |
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1/2" Ported Regulators: |
relief device must satisfy system requirements. |
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Relieving.................................................................535-03 |
The accuracy of the indication of pressure gauges can |
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Non-relieving ..........................................................535-01 |
change, both during shipment (despite care in packaging) |
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and during the service life. If a pressure gauge is to be used |
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PANEL MOUNTING DIMENSIONS - Panel mounting |
with these products and if inaccurate indications may be |
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requires optional factory installed threaded bonnet. |
hazardous to personnel or property, the gauge should be |
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Panel mounting hole diameter: 1.06" (27 mm) |
calibrated before initial installation and at regular intervals |
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Panel thickness: 0.2" to 0.38" (5 to 10 mm) |
during use. |
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Before using these products with fluids other than air, for |
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INSTALLATION |
non industrial applications, or for life-support systems |
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1. Shut off air pressure. Install regulator in air line - |
consult Norgren. |
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● with air flow in direction of arrow on body, |
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● upstream of lubricators and cycling valves, |
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● as close as possible to the device being serviced. |
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● at any angle. |
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2. Connect piping to proper ports using pipe thread sealant |
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on male threads only. Do not allow sealant to enter |
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interior of regulator. |
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3. Install a pressure gauge or plug the gauge ports. Gauge |
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ports can also be used as additional outlets for regulated air. |
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4. Install a Norgren general purpose filter upstream of the |
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regulator. |
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ADJUSTMENT |
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10 |
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1. Before applying inlet pressure to regulator, turn |
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adjustment (1) counterclockwise to remove all force on |
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regulating spring (6). |
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2. Apply inlet pressure, then turn adjustment (1) clockwise |
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9 |
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to increase and counterclockwise to decrease pressure |
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setting. |
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3. Always approach the desired pressure from a lower |
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pressure. When reducing from a higher to a lower |
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setting, first reduce to some pressure less than that |
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desired, then bring up to the desired pressure. |
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NOTE |
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With non-relieving regulators, make pressure |
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reductions with some air flow in the system. If |
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made under no flow (dead-end) conditions, the |
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regulator will trap the over-pressure in the |
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downstream line. |
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4. Tighten lock nut (2) to lock pressure setting. |
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© Norgren 2002 |
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IM-410.207 (2/02) |
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a subsidiary of IMI plc |
Replaces NIP-202 |
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