INVP - Counterweight Flat Level Sight Glass
The INVP flat level sight glass can be supplied with counterweight-operated block valves. The 90-degree opening and closing movement allows simultaneous actuation of both block valves, which remain closed in the rest position.
Applications
This level sight glass is used for visual liquid level indication in marine and industrial vessel applications where a counterweight closing arrangement is required.
Technical Context
Use the catalog to confirm visible length, connection details, valve configuration, and suitability for the project operating conditions.
Brazilian Manufacturing
Quality Assurance
Technical Support
Technical Information
Catalog-backed product facts for engineering, procurement, and application review.
Product Overview
- Model
- INVP
- Category
- Flat level sight glass
- Industries
- Marine, Industrial refrigeration
Applications and Media
- Typical applications
- Visual level indication for clear liquids, Diesel oil tanks, Fuel oil tanks, Ammonia service where catalog conditions are met, Marine level indication
- Compatible media
- Clear liquids, Diesel oil, Fuel oil, Ammonia
- Customization options
- Body material in carbon steel or stainless steel 304/316, Threaded or flanged connections, Different scale colors on request, Drain or relief valves
Technical Characteristics
- Operation type
- Counterweight-operated block valves
- Pressure range
- Model note: Catalog includes low, medium, and high pressure reflective flat sight glass tables.; Table note: Pressure varies by model, section count, connection arrangement, and temperature; see catalog tables.
- Temperature range
- Accessory anti frost extension options: -38 deg C to 0 deg C, -20 deg C to -50 deg C, -50 deg C to -100 deg C, Below -100 deg C
- Connection types
- Threaded connections, Flanged connections
- Installation constraints
- Use torque procedure from catalog during maintenance to prevent glass breakage
Construction and Options
- Materials
- Carbon steel or stainless steel 304/316 body, Carbon steel or stainless steel 304/316 covers, ASTM A-193-GR-B7 clamps for reflective pressure models, ASTM A-194-GR-2H nuts for reflective pressure models, Universal hydraulic cardboard gaskets, Universal hydraulic cardboard cushions, Tempered borosilicate glass
- Accessories
- Anti-frost extension, Metric scale in aluminum, stainless steel, or brass, Drain or relief valves in carbon steel, stainless steel, or other materials, with 1/4 inch or 1/2 inch threaded or flanged connections
Documentation and Quote Context
- Catalog revision
- 08-2016
- Quote process
- Contact Contromag to confirm sight glass model, pressure, temperature, material, and valve arrangement.
