Valve Opening Indicator
Nakakita Seisakusho Co., Ltd.
Refurbished
The Valve Opening Indicator NPI45B Series is a marine automation instrument designed to provide clear visual indication of valve position onboard ships and offshore installations. These indicators are widely used to monitor whether a valve is fully open, fully closed, or operating within an intermediate position range.
Modern vessels rely heavily on accurate valve status information to ensure safe cargo handling, ballast operations, fuel transfer, cooling water circulation, firefighting systems, and various engine room processes. The NPI45B Valve Opening Indicator helps officers and engineers quickly verify valve positions, reducing the risk of operational errors and improving safety.
Onboard marine vessels, hundreds of valves may be installed throughout cargo systems, ballast systems, fuel systems, seawater systems, and engine room piping networks. Accurate valve position monitoring is therefore essential for efficient operation and regulatory compliance.
SM MARINE SERVICE™ supplies marine automation equipment, including valve opening indicators, valve position sensors, transmitters, monitoring devices, and related spare parts for worldwide customers.
The NPI45B Valve Opening Indicator is typically installed directly on a valve actuator or associated mechanical drive mechanism. The device provides local visual feedback showing the actual position of the valve.
Depending on system configuration, the indicator may also interface with vessel automation systems, Integrated Automation Systems (IAS), Alarm Monitoring Systems (AMS), cargo control systems, and engine room monitoring networks.
The equipment is commonly found on:
The indicator enables operators to quickly verify valve status during normal operations and emergency situations.
SM MARINE SERVICE™ can supply both New Equipment and Reconditioned Equipment according to customer requirements and budget.
The instrument provides an easy-to-read indication of valve status, allowing operators to instantly determine whether the valve is open, closed, or partially open.
Incorrect valve alignment can result in serious operational problems. The NPI45B indicator helps reduce human error during ballast operations, cargo handling, and machinery operation.
Designed for demanding shipboard conditions, these units are commonly installed in engine rooms, pump rooms, ballast control stations, and exposed machinery spaces.
Many valve opening indicators can be connected to marine automation systems for remote monitoring and alarm generation.
The design provides long service life with minimal maintenance requirements, making it suitable for continuous vessel operation.
The device can be integrated with different valve arrangements including butterfly valves, gate valves, globe valves, and remotely operated valves.
| Parameter | Typical Specification |
|---|---|
| Product Type | Valve Opening Indicator |
| Model Series | NPI45B Series |
| Function | Valve Position Indication |
| Installation | Valve Actuator Mounted |
| Display Type | Analog Position Indicator |
| Application | Marine Automation Systems |
| Monitoring Range | Open / Closed / Intermediate Position |
| Signal Interface | Depends on System Configuration |
| Marine Application | Cargo, Ballast, Fuel, Utility Systems |
| Construction | Industrial Marine Grade |
| Service Environment | Shipboard and Offshore |
Note: Specifications may vary depending on model variant and vessel installation.
The Valve Opening Indicator NPI45B Series is widely used across various vessel categories.
Used for ballast systems, cooling water systems, and machinery piping networks.
Installed on ballast valves and cargo hold service systems.
Essential for cargo valve monitoring and cargo transfer operations.
Provides accurate valve position indication for chemical cargo handling systems.
Used within cryogenic and auxiliary piping systems requiring reliable valve monitoring.
Supports safe cargo operations through accurate valve status verification.
Applied in process systems, ballast operations, and machinery automation systems.
Used within HVAC, seawater, firefighting, and utility systems.
Supports scientific process control and utility system management.
Installed in fuel, seawater, and auxiliary machinery systems.
SM MARINE SERVICE™ also supports associated marine systems including Radar, ECDIS, AIS, GPS, Gyro Compass, Autopilot, VDR, BNWAS, Satellite Compass, Navtex, Inmarsat, GMDSS, Fire Alarm Systems, Boiler Control Systems, Engine Monitoring Systems, and Integrated Marine Automation Systems.
SM MARINE SERVICE™ provides worldwide sourcing and supply of:
Both New and Reconditioned Equipment are available subject to stock.
SM MARINE SERVICE™ provides professional support for:
Our engineers support marine automation, navigation, communication, and electronic systems worldwide.
SM MARINE SERVICE™
Bangladesh Office
Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh
China Warehouse and Support Center
Shanghai, China
SM MARINE SERVICE™ supplies both New Equipment and Reconditioned Equipment depending on customer requirements and budget.
We provide worldwide supply, sourcing, repair, calibration, technical support and spare parts services for marine automation, navigation, communication and marine electronic systems.
Website: www.smmarineservice.com
Email: info@smmarineservice.com
WhatsApp and Viber: +8801818929292
Marketing Contact: Nazmul Hasan Bhuiyan
Mobile WhatsApp and Viber: +8801730296909
The Valve Opening Indicator NPI45B Series is an important component of modern marine automation systems, providing reliable valve position monitoring for cargo operations, ballast management, engine room systems, and offshore applications. Accurate valve indication improves operational safety, reduces human error, and supports efficient vessel management.
Whether you require a complete Valve Opening Indicator NPI45B unit, spare parts, troubleshooting assistance, calibration services, repair support, or replacement equipment, SM MARINE SERVICE™ can provide worldwide supply and technical solutions. Contact SM MARINE SERVICE™ today for New Equipment, Used Equipment, Reconditioned Equipment, spare parts sourcing, repair services, and professional marine automation support.
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