Series 4500 Pressure Reducing Regulator
Two Stage, Diaphragm Type

Typical Applications:

• Cylinder bottle applications
• Gas and liquid chromatography
• High purity carrier gases
• Zero, span and calibration gases
• Lecture bottle applications
• Research and development labs
• Low flow purge systems
• Industrial controls

The Model 4500 shown is all brass with inlet / outlet gauges, CGA 540 inlet port, 1/8 FNPT outlet and pressure relief valve.

Specifications:

• Maximum control pressure: 1-25, 1-50, 5-100 PSIG
• Maximum inlet pressure: 3500 PSIG
• Cv 0.08

Materials of Construction:

• Body: Machined bar stock brass, electroless nickel plated brass, 316 SS, aluminum or monel.
• Bonnet: Machined bar stock brass, electroless nickel plated brass or aluminum
• 2nd stage Diaphragm: 316 stainless or neoprene. Piston sensed design also available
• First stage sensing element: 316 ss Diaphragm or optional brass piston
• Stainless diaphragm seal: Teflon*
• Main valve seal: Teflon*
• Valve seat: Teflon*
• Piston seal: Viton*
• First stage relief valve seal: Viton*

Porting:

• 1/8" FNPT standard
• other porting optional

Options:

• Captured bonnet vent
• Panel mount bonnet and nut
• First stage pressure relief valve

Porting Configuration

Flow Chart

Regulator Discharge Characteristic Curves