This high purity two stage regulator is designed for non-corrosive gases requiring precise and stable delivery pressure control. These regulators provide constant outlet pressure regardless of inlet pressure fluctuations. This regulator features a unique, specially designed stainless steel diaphragm that gives maximum accuracy and provides stable regulation of delivery pressure. A nickle plated brass, diffusion resistant, packless diaphragm shut-off valve is available for flow control and to maintain system purity. Captured 1/16” FNPT vent ports are provided for both stages to allow for venting of hazardous gases in the event of a diaphragm failure. This regulator is capable of withstanding internal vacuums during purging operations.

DESIGN FEATURES
  • Filtered seat for added gas stream purity.
  • Stainless steel diaphragm.
  • 2 1/2" dual scale gauges.
  • 316 stainless steel filter.
  • Brass nickel plated bar stock body.
  • Threaded bonnet for panel mounting.
  • Body is tapped for rear bracket mounting.
  • Captured vent in bonnet (1/16" FNPT).
  • Metal to metal body to diaphragm seal.


SPECIFICATIONS
Maximum Inlet Pressure................3000 PSIG
Outlet Pressure Ranges.......0-25, 0-50, 0-100
                                                    0-250 PSIG
Temp. Operating Range........-40oF to +165oF
Ports (4)........................................1/4" FNPT
Outlet...........................................1/4" MNPT
Outlet Valve.........1/4" Brass Diaphragm Valve
Design Leak Rate...............(2x10-8css Helium)
Flow Coefficient Cv.................................0.05
Inlet Decay Rate....................... .02/100 PSIG
Weight................................................5.22 lbs
MATERIALS OF CONSTRUCTION
Body......................Electroless Nickel Plated Brass
                                                              Bar Stock
Bonnet 1st Stage.....Electroless Nickel Plated Brass
Bonnet 2nd Stage....Electroless Nickel Plated Brass
Seat..............................................................Teflon
Seat Retainer.................................................Brass
Diaphragms......................................Stainless Steel
Gauge...........................2-1/2" Nickel Plated Brass
Filter (2)........................316 Stainless Steel / Brass
Valve Stem................................316 Stainless Steel
Valve Spring..............................316 Stainless Steel


ORDERING INFORMATION FOR 620 SERIES REGULATORS
Product Number
Max
Inlet
Pressure
PSIG
Max
Outlet
Pressure
PSIG
Inlet Gauge
Delivery Gauge
Range PSIG
Graduations PSIG
Range
PSIG
Graduations PSIG
620
3000
25  
0-3000
50
 30" Hg 0 - 30
1
621
3000
50  
0-3000
50
 0 - 60
2
622
3000
100
0-3000
50
 0 - 200
5
623
3000
250
0-3000
50
 0 - 400
10




Choose your configuration
Regulators:
Outlet Fittings:
CGA Inlet Fittings:
Accessories:
Option:


On Orders Over $175.00, U.S Orders Only

Last update 10 June 2008