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-L1320
- Category
- High-pressure reflective flat level sight glass
- Industries
- Marine, Industrial refrigeration
Applications and Media
- Typical applications
- Visual level indication for clear liquids and vapor, Diesel oil tanks, Fuel oil tanks, Ammonia service where catalog conditions are met, Marine level indication
- Compatible media
- Clear liquids, Vapor where catalog conditions are met, 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
- Manual lever with counterweight
- Pressure range
- Model note: Catalog table is for high-pressure reflective model INVP-L1320.; Table note: Pressure varies by section count, connection arrangement, and temperature; see catalog table.
- 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
- 1/2 inch or 3/4 inch BSPM/NPTM threaded vessel connections, ASME B16.5 DN 1/2 inch, 3/4 inch, or 1 inch flanged vessel connections
- Installation constraints
- Use torque procedure from catalog during maintenance to prevent glass breakage
Construction and Options
- Materials
- Forged carbon steel or stainless steel 304/316 body, Forged 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, with 50 mm markings, 10 mm divisions, and 5 mm subdivisions, 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.
