BROOKS Instrument

BROOKS Instrument Pressure Regulators Model 8601

Pressure Regulators

Model 8601

Data Sheet

DS-PR-8601-eng

March, 2008

DESCRIPTION

Brooks ®  8601 Pressure Regulators are high precision

supply pressure regulators which are direct-acting,

non-relieving units that provide bubble-tight shut-off on

helium at 100 psi.

Compact and economical, these units are assembled in

a “clean room” environment and are tested under

simulated operating conditions.

DESIGN FEATURES

• Compact design

• Suitable for line or panel mounting

• Pressure gauge connection

• Bubble-tight shut-off to 100 psi

• Replaceable stainless steel inlet filter element

• UL listed (Aluminum body only) as compressed gas

regulator for use with the following gases: air, argon,

helium, hydrogen, krypton, neon, nitrogen, oxygen or

xenon.

SPECIFICATIONS

Capacity

The pressure regulator is ideal for use at flow up to a

maximum of 1,000 sccm air.

Ratings

Maximum Inlet Supply Pressure – 250 psi (1,724 kPa)

Maximum Working Temperature – Standard: 140°F

(60°C), Optional – 350°F (177°C)

Typical Characteristics

(Helium 60 psig supply, 50 psig output)

Drift – Less than 1% in first fifteen minutes to total of no

more than 1.5% long term

Supply Pressure Effect – 10 psi increase in supply will not

change output more than 0.07 psi.

Flow Regulation – From 3 sccm to 70 sccm helium, output

pressure will not decrease more than 0.08 psig (0-10,

0-30 psi Regulators), 0.10 psig (0-60 psi Regulators),

0.125 psig (0-100 psi Regulators), 0.15 psig (0-150 psi

Regulators), 0.175 psig (0-200 psi Regulators)

Ambient Temperature Effect – Standard 60 psi range,

0.020 psi/°F.

Base Line Oscillation – .0025 psi

Valve Adjustment & Operating Ranges – fifteen turns for

0-10, 0-30, 0-60, 0-100, 0-150 or 0-200 psig output

range

Total Pressure Drop

Minimum – 10 psi; Maximum – 250 psi

Materials of Construction

BODY – Standard: aluminum; Optional: 316 Stainless

Steel

BONNET – Aluminum

VALVE SEAT – Standard: Brass; Optional: 316 Stainless

Steel

VALVE STEM – 316 Stainless Steel

DIAPHRAGM – Reinforced Buna-N, Viton-A ®

fluoroelastomers

RANGE SPRING – Music wire, zinc plated

FILTER – 40 micron, 316L Sintered Stainless Steel with

Viton ® fluoroelastomers or Buna retainer sleeve

Connections

Type – Standard: 1/8″ NPT; Optional: 1/4″ NPT, 1/8″ or

1/4″ compression fitting, 1/4″ ID hose adaptors

Dimensions – See Figure 1

Compatible Brooks Equipment

Model 1390 Filter and Model 1391 Filter

Table 1 8600 Series ELF Pressure Regulators

ORDERING INFORMATION

To order, please specify

1. Model number

2. Materials of construction

3. Output range

4. Connection type & size

5. Options, if desired

TRADEMARKS

Brooks………………………………………………….. Brooks Instrument, LLC

Viton-A ……………………………………. DuPont Performance Elastomers

BASE MODEL NUMBER PRESSURE REGULATOR

8601D SIDE CONNECTIONS

BODY MATERIAL – WETTED

1 ALUMINUM*

2 316 STAINLESS STEEL*

DIAPHRAGM AND VALVE SEAT MATERIALS

A BUNA-N AND BRASS/BUNA-N (ALUMINUM ONLY)*

B VITON AND BRASS/VITON (ALUMINUM ONLY)

C BUNA-N AND STAINLESS STEEL/BUNA-N*

D VITON AND STAINLESS STEEL/VITON

RANGE

1 0-10 PSI*

2 0-30 PSI*

3 0-60 PSI*

4 0-100 PSI*

5 0-150 PSI*

6 0-200 PSI*

CONNECTION SIZE AND TYPE

A 1/8″ NPT INTEGRAL*

B 1/4″ NPT

C 1/8″ COMPRESSION TUBE

D 1/4″ COMPRESSION TUBE

E 1/4″ I.D. HOSE

ACCESSORIES (UP TO 3 DIGIT CODE)

A NONE*

B PANEL MOUNTING*

C DEGREASE FOR OXYGEN SERVICE*

D NO VALVE KNOB

E NO BROOKS LOGO

F GAGE PORT PLUGGED

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