Masoneilan 496-257 Explosionproof Electromechanical Valve Limit Switch
The Masoneilan 496-257 Valve Limit Switch is designed for reliable valve position detection and electrical switching in industrial process control systems.
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- 1 YearWarranty
Product Overview
The Masoneilan 496-257 Valve Limit Switch is designed for reliable valve position detection and electrical switching in industrial process control systems. Manufactured under the Masoneilan brand by Baker Hughes, this industrial position switch uses two single-pole, double-throw (SPDT) electromechanical switches to detect predetermined valve positions and transmit discrete electrical signals to monitoring and control equipment. Its dual-switch configuration enables dependable open and closed position indication, supporting industrial automation, equipment monitoring, and safe valve operation.
Part of the Masoneilan 496 Series, the 496-257 features an explosion-proof enclosure designed for suitable hazardous-area installations, an adjustable cam-operated switching mechanism, and a robust housing with corrosion-resistant protection. Its mechanical position detection system supports installation on compatible rotary and linear valve assemblies through appropriate mounting and linkage arrangements. With adjustable switching points, industrial-grade electrical contacts, and dependable position monitoring capabilities, the Masoneilan 496-257 is suitable for oil and gas processing, chemical manufacturing, power generation, refining, and industrial valve automation applications.
Technical Specifications
|
Specification |
Value |
|---|---|
|
Product Name |
Electromechanical Valve Limit Switch |
|
Brand |
Masoneilan |
|
Manufacturer |
Baker Hughes |
|
Model |
496-257 |
|
Series |
496 Series |
|
Product Type |
Valve Position Limit Switch |
|
Switch Type |
Electromechanical |
|
Number of Switches |
2 |
|
Contact Configuration |
Single-Pole, Double-Throw (SPDT) |
|
Switching Mechanism |
Adjustable Cam-Operated Microswitches |
|
Control Function |
Valve Open and Closed Position Indication |
|
Position Detection |
Mechanical Valve Shaft Movement |
|
Electrical Output |
Discrete Switching Contacts |
|
Housing Material |
Aluminium with Anti-Corrosion Treatment |
|
Shaft Material |
Stainless Steel |
|
Enclosure Configuration |
Explosionproof |
|
Maximum Rotary Travel |
90° |
|
Linear Valve Travel |
12–102 mm with Suitable Linkage |
|
Enclosure Protection |
IP66 / IP67 |
|
Electrical Connection |
3/4 Inch NPT |
|
Maximum AC Contact Rating |
10 A at 125 VAC, Resistive Load |
|
Hazardous Area Certification Family |
ATEX and Other Regional Approvals |
|
Mounting Application |
Compatible Rotary and Linear Control Valves |
|
Operating Principle |
Mechanical Position-Activated Electrical Switching |
|
Application Scope |
Industrial Valve Position Monitoring |
|
Condition |
New |
|
Warranty |
1 Year |
Key Features
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Dual electromechanical limit switches for reliable valve position monitoring and indication.
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Two SPDT switching contacts for flexible integration into industrial electrical control circuits.
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Explosionproof enclosure configuration for appropriately certified hazardous-area installations.
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Adjustable cam-operated switching mechanism for precise valve position detection.
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Durable aluminium housing with anti-corrosion treatment for industrial applications.
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Stainless steel operating shaft for reliable mechanical position transmission.
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IP66 / IP67 enclosure protection against dust and water ingress.
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Supports rotary valve movement up to 90°.
-
Compatible with linear valve installations using appropriate mechanical linkage.
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Discrete electrical switching outputs for integration into industrial monitoring and automation equipment.
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Suitable for valve open and closed position indication.
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Mechanical switching operation without requiring a separate position transmitter.
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Flexible mounting arrangements for compatible industrial control valve assemblies.
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Accessible internal switching components for adjustment and maintenance.
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Suitable for industrial process automation and valve position monitoring applications.
Typical Applications
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Industrial control valve position monitoring
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Ball and butterfly valve position indication
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Pneumatic actuator monitoring systems
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Oil and gas production and processing facilities
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Chemical and petrochemical plants
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Industrial refineries
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Power generation and utility systems
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Water and wastewater treatment facilities
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Manufacturing and production equipment
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Industrial valve automation assemblies
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Valve open and closed status monitoring
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Industrial control panel integration
-
Hazardous-area process instrumentation
Shipping & Support
-
Fast dispatch – Australia & Worldwide Shipping
-
Technical assistance available
-
1-year warranty
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