Product Images
Product
- N70 Exhaust Port Indicator
- N704M3VAR000
Other Images 1
- N70 Exhaust Port Indicator
- N704M3VAR000
Other Images 2
- N70 Exhaust Port Indicator
- N704M3VAR000
Description
When no pressure is flowing thru the exhaust port of a valve or sensor, the "RED" indicator stem remains inside the indicator body.
Special Features
- Constructed of field proven materials
- will not affect operation of valve or sensor it is installed on
- can be mounted in any position (horizontal, vertical up or down
Technical Data
- Maximum Exhausted Pressure
- 150 PSI (10.3 bar)
- Minimum Working Pressure
- 3 PSI (.2 bar)
- Cv Factor
- .4
- Ambient Temperature
- -20 to 180° F (29 to 82°C)
Documents & Downloads
N70 Exhaust Port Indicator
DownloadFurther Product Information
The Exhaust Port Indicator operates when the valve or sensor vents pressure. This pressure extends the "RED" indicator stem outward and at the end of its movement allows the exhaust pressure to escape from four slots in the face of the body. The stem stays extended until manually reset and allows all pressure to freely exhaust to the atmosphere. The small size and simplicity of operation makes the Model N70 Exhaust Port Indicator an economical device for providing "First Out" alarm indication.
The N70 provides a visual indication of whether a pneumatic output is currently venting or active.
Typical applications:
- Indication of whether a control signal is venting (exhaust active)
- Visual check of whether a pneumatic controller or relay has switched
- Support for troubleshooting (diagnostics)
- Confirmation of safety functions (e.g., shutdown/trip triggered)
Key Features
The N70 features a deliberately simple yet robust design:
1. Mechanical indication—no electronics
- No power required
- Operates solely via airflow/venting
- Highly reliable in hazardous areas
2. Suitable for hazardous environments
- Typical applications: Oil & Gas, offshore, petrochemicals
- No electrical ignition sources in the process area
3. Instant visual feedback
- Direct indication of "venting" vs. "not venting"
- No measuring instrument or display required
4. Robust industrial design
- Built for harsh environments, vibration, dirt, and pressure fluctuations
- Low maintenance due to the absence of moving precision parts in the sensing mechanism
Special Features
- 316 SST Construction
- Durable Viton Seal
- Large Cv factor produces large flow rates
- Small compact design
- No moving parts
- No O-Rings
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