Liquid Level Switch

Liquid Level Switch
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Liquid Level Switch

Product catalog summary
Overview: This document provides comprehensive details on various liquid level switches from Whitman Controls, focusing on their specifications, features, and industrial applications. These switches are designed for diverse uses, with options for different materials and mounting styles to meet specific requirements.
1. L10 Vertical Brass Buna Temperature-Level Switch:
  • Key Features: Offers versatile control of temperature and liquid level, submersible to NEMA 6 rating, with an extensive temperature range and SPST availability.
  • Specifications: Minimum liquid specific gravity of 0.75, temperature range from -40°F to +180°F (up to +230°F in oil), maximum system pressure of 160 PSIG, and electrical switch rating of 50 VA.
2. L20/L25 Side Mounted Stainless Steel Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, constructed from 316/316L stainless steel, side-mounted, with an extensive temperature range.
  • Specifications: Minimum liquid specific gravity of 0.85, temperature range from -40°F to +300°F, maximum system pressure of 500 PSIG, and electrical switch rating of 50 VA.
3. L20/L25 Side Mounted CPVC Plastic Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, made from CPVC plastic, side-mounted, with an extensive temperature range.
  • Specifications: Minimum liquid specific gravity of 0.90, temperature range from -40°F to +180°F, maximum system pressure of 100 PSIG, and electrical switch rating of 50 VA.
4. L20/L25 Side Mounted Kynar Plastic Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, constructed from Kynar plastic, side-mounted, with an extensive temperature range.
  • Specifications: Minimum liquid specific gravity of 1.00, temperature range from -40°F to +180°F, maximum system pressure of 100 PSIG, and electrical switch rating of 50 VA.
5. L20/L25 Side Mounted Polypropylene Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, made from polypropylene, side-mounted, with an extensive temperature range.
  • Specifications: Minimum liquid specific gravity of 0.70, temperature range from -40°F to +180°F, maximum system pressure of 100 PSIG, and electrical switch rating of 50 VA.
6. L30 Vertical Multi-Station Stainless Steel Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, made from 316L stainless steel, with up to 5 level control points and customizable length up to 48".
  • Specifications: Minimum liquid specific gravity of 0.85, temperature range from -40°F to +300°F, maximum system pressure of 1,000 PSIG, and electrical switch rating of 50 VA.
7. L30 Vertical Multi-Station Brass Buna Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, with brass stem and buna floats, up to 5 level control points, and customizable length up to 48".
  • Specifications: Minimum liquid specific gravity of 0.70, temperature range from -40°F to +180°F (up to 230°F in oil), maximum system pressure of 160 PSIG, and electrical switch rating of 50 VA.
8. L31 Heavy Duty Vertical Multi-Station Stainless Steel Liquid Level Switch:
  • Key Features: Submersible to NEMA 6, made from 316L stainless steel, with up to 7 level control points and customizable length up to 72".
  • Specifications: Details not fully provided in the excerpt.
General Notes: All switches feature Whitman's patented "Red Seal" potting for enhanced submersibility. Compatibility between switch materials and the media/environment is crucial.
Additional Series Overview: The document also covers the L40, L54/L55, L60, and L70 series, designed for various industrial applications including OEM, potable water, hot water, acids, solvents, oil, gasoline, hydraulic oil, and jet fuel.
L40 Series: Available in stainless steel, brass/Buna, CPVC, Kynar, and polypropylene, with submersibility to NEMA 6 rating and extensive temperature range.
L54/L55 Series: Made from 316L stainless steel, side-mounted with vertical actuation, submersible to NEMA VI rating.
L60 Series: Heavy-duty, available in stainless steel and brass/Buna, submersible to NEMA VI rating.
L70 Series: Made from polypropylene, miniature size, compatible with various liquids, normally open-only switches.
Performance Characteristics: Miniature size, suitable for various applications, with a brass stem and buna float, submersible to NEMA VI rating, and extensive operating temperature range.
Specifications: Wetted materials include polypropylene & Buna, with a float made from polypropylene plus FDA foaming agent, and fittings available in 1/8” NPT or 3/8-16 UNC Straight.
General Caution: Ensure compatibility of customer media and environment with construction materials.
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Catalog excerpts

Liquid Level Switch-2

• Highly versatile with temperature and liquid level control • Whitman Red Seal potting submersible to a NEMA 6 rating • Extensive operating temperature range • SPST availability L10Vertical Brass Buna Temperature-Level Switch OVERVIEW The Whitman Controls L10 Series Vertical Mount Brass Buna Temperature-Level Switches are highly versatile, providing the end-user the ability to control both temperature and liquid level within an application. These switches can be used to set off high/low temperature alarms along with a number of other functions. The buna float can be used in numerous liquids...

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Liquid Level Switch-3

L20/L25Side Mounted Stainless Steel Liquid Level Switch OVERVIEW The Whitman Controls L20 / L25 Series Side Mounted 316L Stainless Steel Liquid Level Switches are commonly used in potable water, hot water, various acids, and in solvents. The side mount provides added versatility, allowing the switch to be used as a high or low level indicator, and stainless steel body provides use up to 500 PSI. These are most often used in many O.E.M. and various other custom industrial applications. These are available with several options as specified by the user. • Whitman Red Seal potting submersible to...

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Liquid Level Switch-4

L20/L25Side Mounted CPVC Plastic Liquid Level Switch OVERVIEW The Whitman Controls L20 / L25 Series Side Mounted CPVC Plastic Liquid Level Switches are typically used in water and potable water applications. The side mount provides added versatility, allowing the switch to be used as a high or low level indicator, and plastic body provides use up to 100 PSI. These are most often used in many O.E.M. and various other custom industrial applications. These are available with several options as specified by the user. • Whitman Red Seal potting submersible to a NEMA 6 rating • CPVC Plastic • Side...

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Liquid Level Switch-5

L20/L25Side Mounted Kynar Plastic Liquid Level Switch OVERVIEW The Whitman Controls L20 / L25 Series Side Mounted Kynar Plastic Liquid Level Switches are typically used with solvents and certain bases. The side mount provides added versatility, allowing the switch to be used as a high or low level indicator, and plastic body provides use up to 100 PSI. These are most often used in many O.E.M. and various other custom industrial applications. These are available with several options as specified by the user. • Whitman Red Seal potting submersible to a NEMA 6 rating • Kynar Plastic • Side mounted •...

 Open the catalog to page 5
Liquid Level Switch-6

L20/L25Side Mounted Polypropylene Liquid Level Switch OVERVIEW The Whitman Controls L20 / L25 Series Side Mounted Polypropylene Liquid Level Switches are among the most versatile and durable of the side-mounted liquid level switch line. The polypropylene wetted material makes the switch highly compatible with numerous liquids from acids, to water, to bases. The side mount provides added versatility, allowing the switch to be used as a high or low level indicator, and plastic body provides use up to 100 PSI. These are most often used in many O.E.M. applications. These are available with several...

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Liquid Level Switch-7

Liquid Level Switches L30 Stainless Steel Liquid Level Switch Vertical Multi-Station OVERVIEW The Whitman Controls L30 Series Vertical Multi-Station Stainless Steel Liquid Level Switches provide the user with as many as five level control points and up to 48” in overall length. The structure allows these switches to be mounted at the top or bottom of a tank. It can be fully customized to meet various tank sizes and switch requirements, and has assorted reversible polarities and wiring possibilities. These are most commonly found in potable water, hot water, acids, and various solvent applications....

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Liquid Level Switch-8

Liquid Level Switches L30 Brass / Buna Liquid Level Switch Vertical Multi-Station OVERVIEW The Whitman Controls L30 Series Vertical Multi-Station Brass Buna Liquid Level Switches provide the user with as many as five level control points and up to 48” in overall length. The structure allows these switches to be mounted at the top or bottom of a tank. It can be fully customized to meet various tank sizes and switch requirements, and has assorted reversible polarities and wiring possibilities. These are most commonly used with oil, gasoline, hydraulic oil, and jet fuel. The buna float can be used...

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Liquid Level Switch-9

Liquid Level Switches L31Vertical Multi-Station Stainless Steel Liquid Level Switch Heavy Duty OVERVIEW The Whitman Controls L31 Series Heavy Duty Vertical Multi-Station Stainless Steel Liquid Level Switches provide the user with as many as six level control points and up to 72” in overall length. The structure allows these switches to be mounted at the top or bottom of a tank. It can be fully customized to meet various tank size and switch requirements, and has assorted reversible polarities and wiring possibilities. These are most commonly found in potable water, hot water, acids, and various...

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Liquid Level Switch-10

L40Vertical Mount 1” Cylinder Stainless Steel Liquid Level Switch OVERVIEW The Whitman Controls L40 Series Vertical Mount 1” Cylinder Stainless Steel Liquid Level Switch has both a stainless steel stem and float affording the user high performance and versatility. These levels are most commonly seen in OEM and various other industrial applications. These are used in potable water, hot water, and in various acids and solvents as the Whitman Red Seal potting affords submergibility to a NEMA 6 rating. *Actuation point is roughly midway of float travel in liquid with a specific gravity of approximately...

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Liquid Level Switch-11

L40Vertical Mount 1” Sphere Stainless Steel Liquid Level Switch OVERVIEW The Whitman Controls L40 Vertical Mount 1” Sphere Stainless Steel Liquid Level Switches have both a stainless steel stem and float affording the user high performance and versatility. These levels differ from their L40 cylinder cousin in that they feature a 1” sphere float and can withstand a greater crush pressure up to 1,000 PSI (69 BAR). These levels are most commonly seen in OEM and various other industrial applications. These are used in potable water, hot water, and in various acids and solvents as the Whitman Red...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.