40, 41, 42 Precision Pressure Regulators

Regulators
Models 40, 41, and 42 Precision Pressure Regulators
Technical data
Air Consumption
See Graph 3
Drift Effect
See Graph 4
Exhaust-Flow Rate (at 25-psig setting)
Pressure rise of 0.25 psig will result from flow of:
Model 40: 1.5 scfm
Model 41: 2.4 scfm
Model 42: 1.7 scfm
Maximum Flow Capacity
See Graph on page 4.4
4
Standard Mounting
In-line pipe or flush panel up to 1/4" thick (bushing for 3/4"
thick panel is optional)
Connections: (supply and outlet)
Model 40: 1/4" NPT
Model 41: 1/8" NPT
Model 42: 1/2" NPT
Materials of Construction (materials in contact with
regulated media)
Brass, stainless steel, Neoprene, aluminum, and zinc
Accessories
P/N 2932-19 - Mounting Bracket for surface mounting
(Model 40 and Model 42)
P/N 10963-73 - Mounting Bracket for surface mounting
(Model 41)
P/N 3603-22 - Locknut
4.2
Options
Air Loading
Provision for supplementary air loading (100 psig max) in
addition to spring loading
Model 42: 1/4" NPT
Model 41: 1/8" NPT
Model 40-2: Not available
Add [A] into the model number.
Example: 40A15
Tapped Exhaust
Provision for piping exhaust flow away from the regulator
Model 42: 1/8" NPT
Model 40 & 41: Not available
Add [E] into the model number.
Example: 42E15
Deletion of Safety release Valve (SRV)
The SRV increases exhaust flow capacity when the
regulator must exhaust large flows. Deletion of the SRV will
improve drift characteristics (see Graph 4). The SRV is not
available with the Seimens 41. It is standard with:
Model 40: 2, 7, 15, 30, 50 & H50 pressure ranges
Model 42: 15, 30, 50, H30, & H50 pressure ranges
To delete the SRV, add an [X] into the model number.
Example: 40X15
Regulators
Models 40, 41, and 42 Precision Pressure Regulators
Technical data
Graph 1 Droop Effect
4
Test Procedure: Each 30-psig-range regulator was adjusted to 25 psig with 100 psig supply and no flow. Flow was increased to
maximum capacity. All regulated pressure readings were taken at gauge connection in the body of the regulator.
4.3
Regulators
Models 40, 41, and 42 Precision Pressure Regulators
Technical data
Graph 2 Maximum Air Flow, SCFM Delivered
4
* Supply pressure for other models will be
determined by multiplying the pressure(s) above
by the flow values shown below:
Model
Model 40H
Model 42
Model 42H
Graph 3 Air Consumption
Value
4.5
4
14
Graph 4 Drift Effect
Test Procedure: Regulators were set at 20 psig output with 100 psig
air supply. Supply was turned off for one week, after which supply was
turned on at time 0.
The Nullmatic regulator bleeds only the amount of air that passes
through the pilot nozzle when there is no demand for output flow.
The exhaust port starts to close as soon as the flow of regulated air
is increased to the output, and it closes completely before the pilotplunger valve opens. Full pilot flow is then delivered to the output.
4.4
Regulators
Models 40, 41, and 42 Precision Pressure Regulators
Technical data
Model Selection
Supply Pressure
psig
Model
No.
40-21
40-7
40-15
40-30
40-50
40-100
40-200
40-300
40-450
41-15
41N152
41-30
41-50
41-100
41-2550
42-15
42-30
42-50
42-100
42-200
Range
psig3
Recommended
Maximum
(1-50"H2O)
(6-200"H2O)
0.5-15
1-30
1-50
1.5-100
3-200
7-300
15-450
0.5-15
0.5-15
1-30
1-50
1.5-100
25-50
0.5-15
1-30
1-50
1.5-100
3-200
5-10
50
75
120
120
150
250
350
500
75
75
120
120
150
120
75
120
120
150
250
25
100
150
150
150
500
500
500
500
150
150
150
150
250
150
150
150
150
500
500
Standard
Modifications
X
A&X
A&X
A&X
H, A & X
H&A
A
A
A
A
4
A
A
A
A, E & X
H, A, E & X
H, A, E & X
H, A & E
A&E
Standard Modifications
H - High flow capacity.
A - With pressure-tight top housing, containing 1/4" NPT connection for supplementary air loading.
E - With 1/8" NPT connection to collect exhaust
X - Without safety release.
1) Includes locknut on adjusting stem (optional for all other models).
2) For use with Model 65 Square-Root Extractor to maintain minimum 3 psig output.
3) At recommended supply pressure.
4.5
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