Product Images
Product
- P40 Pneumatic Pressure Switch
- P40_P___00___
Other Images 1
- P40 Pneumatic Pressure Switch
- P40_P___00___

Other Images 2
- P40 Pneumatic Pressure Switch
- P40_P___00___

Other Images 3
- P40 Pneumatic Pressure Switch
- P40_P___00___

Other Images 4
- P40 Pneumatic Pressure Switch
- P40_P___00___

Description
3-way "block and bleed" valve that can be configured to respond to increasing or decreasing process pressures
Special Features
- Patented piston/base design has three sensing diameters built in
- Piston and base materials meet NACE MR01-75
- A 1/4" NPT (F) sensor base connection reduces fitting costs for panel mounted applications
Options & Variants for P40_P___00___
-
:
Standard Serviec
L
:
-40°F Temp Service
H
:
+300°F Temp Service
P
:
+150 psi Supply
3
:
AISI 316 ST. STL
I
:
INCONEL 625
M
:
MONEL
H
:
HASTELLOXY C
X
:
Spring Code
X
:
Piston Code
V
:
Fluorocarbon Piston Seals (STD) -20...-300°F
K
:
Kalrez Piston Seals (-20...-450°F)
B
:
Buna Piston Seals (-20...-450°F) [not for H2S]
0
:
No special feature
1
:
Vent Port Indicator
2
:
Vent Screen
P
:
Panel Mount
S
:
Scale
T
:
Option P&S (Mount & Scale)
Technical Data
- Set Point Deviation
- ± 1% max.
- Deadband
- 5% of range max
- Switch Type
- 3-way pneumatic
- Instrument Pressure
- 1500 psi max.
- Valve Cv Factor
- .050
- Ambient Temperature Range
- -20...+180°F (-29...+82°C)
Documents & Downloads
Further Product Information
The standard unit utilizes a patented system which provides three piston diameters that are selected by simply changing the orientation of one part.
When used in combination with one of the three available spring sizes, the Model P40 offers sensing ranges from 10 to 10,000 psi. without the purchase of additional bases or pistons.
| Spring Codes Color | Available Ranges - psi (bar) | ||||||||
| Standard | 10- 115 | 20- 230 | 50- 450 | 200- 750 | 500- 1500 | 1000- 3000 | 1000- 3000 | 2000- 5000 | 5000- 10000 |
| W (WHITE) | X | X | X | ||||||
| B (BLUE) | X | X | X | ||||||
| R (RED) | X | X | X | ||||||
| Piston Diameter | 1.25" | 1.25" | 1.25" | .50" | .50" | .50" | .25" | .25" | .25" |
| Piston Code | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 |
Special Features
- Compact size saves space in panel use
- Unique instrument valve constructed allows for minimum dead band and max seat life
- Large flow paths are provided in the sensing base and piston to insure quick response to pressure changes
- Spring may be removed without bleeding off instrumentation or process pressures
- All sensing seals incorporate PTFE back-up rings permitting low pressure sensing ranges to operate up to 10,000 psi without seal damage