Matheson Gas Line Regulators
D66
Scientific Instrument Services, Inc.
TM
Phone: 908-788-5550
www.sisweb.com/catalog/08/D66
Model 3420 Series
Single Stage High Purity Brass
In-Line Regulator
Design Features
-
Brass Barstock construction
-
Equipped with an outlet diaphragm valve
-
Metal to metal seals throughout
-
Bonnet threaded for panel mounting as standard
-
Body pre-drilled for back mounting
T
he Model 3420 Series regulators have been designed
for line service to provide a means of dropping the
pressure of house gas systems to a lower working
pressure. The matched low inlet pressure and control valve
design ensure stable pressure and flow from house systems.
These regulators provide high purity control for laboratory use.
The Model 3420 Series regulators are recommended for use in appli-
cations where a house gas or distribution system pressure needs to be
reduced to a lower working pressure. Typically these applications include
use of the regulators for station pressure controls, carrier gas controls,
blanketing operations and other high purity critical laboratory situations.
The Model 3420 Series is compatible with gases that are non-corrosive
in nature and gases that are compatible with the materials in the process
stream.
Materials of Construction
Body:
B16 Brass Barstock
Bonnets:
Nickel Plated Brass
Diaphragms:
316 Stainless Steel
Seats:
PFA PTFE
Seals:
Metal to Metal
Note: These regulators cannot be supplied with CGA connections
Model 3450 Series
Single Stage High Purity Stainless Steel
In-Line Regulator
Design Features
-
316 Stainless Steel construction
-
Equipped with an outlet diaphragm valve
-
Metal to metal seals throughout
-
Bonnet threaded for panel mounting as standard
-
Body pre-drilled for back mounting
T
he Model 3450 Series has been improved to meet the
demands of our customers. The Model 3450 Series
has been upgraded to a higher purity, longer lived prod-
uct design. These regulators have been designed for line service
to provide a means of dropping the pressure of house gas sys-
tems to a lower working pressure. The large diaphragm surface
area provides excellent pressure control. These regulators can
also be used for Dichlorosilane control for laboratory use.
The Model 3450 Series regulators are recommended for use in appli-
cations to reduce a house gas or distribution system pressure to a lower
working pressure. Typically these applications include use of the regula-
tors for station pressure controls, some semi-conductor processes, blan-
keting operations and other high purity critical situations. The Model 3450
Series is compatible with gases that are non-corrosive or semi-corrosive
in nature and gases that are compatible with the materials in the process
stream.
Materials of Construction
Body:
316 Stainless Steel
Bonnets:
Nickel Plated Brass
Diaphragms:
316 Stainless Steel
Seats:
PFA PTFE
Seals:
Metal to Metal
**For Dichlorosilane only
Note: These regulators cannot be supplied with CGA connections
Specifications
Maximum Inlet Pressure:
500 psig (3,450 kPa)
Maximum Flow Rate:
Model 3421: 180 CFH (80 LPM)
(At 500 psig, N2):
Model 3423: 850 CFH (375 LPM)
Flow Coefficient (Cv):*
0.15
Operating Temperature:
-40 to 165°F (-40 to 74°C)
Porting:
1/4" NPT female
Porting Configuration:
1 high, 3 low
Specifications
Maximum Inlet Pressure:
500 psig (3,450 kPa)
Maximum Flow Rate:
Model 3452: 300 CFH (130 LPM)
(At 500 psig, N
2
):
Model 3454: 730 CFH (320 LPM)
Flow Coefficient (Cv):*
0.50
Operating Temperature:
-40 to 165°F (-40 to 74°C)
Porting:
1/4" NPT female
Porting Configuration:
1 high, 2 low
Model
Delivery Pressure
Delivery Pressure
No
Range.
Gauge
2-30 psig
30" vac-0-60 psig
4-100 psig
30" vac-0-200 psig
10-250 psig
30" vac-0-400 psig
Model
Delivery Pressure
Delivery Pressure
No
Range.
Gauge
2-30 psig
30" vac-0-60 psig
4-100 psig
30" vac-0-200 psig
2-30 psig
30" vac-0-60 psig
tip...
