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UL-Rated 703-U/UJ Pressure Switches Achieve Long Life in Explosive Environments

Gaseous or liquid fluid systems in hazardous locations demand the toughest pressure switches. These components must incorporate heavy-duty designs that offer exceptional accuracy despite harsh environmental conditions. They must also carry the right safety ratings, guaranteeing reliable operation in applications like offshore exploration and petrochemical processing. 

Our 703-U and 703-UJ Series of UL-rated, explosion-proof pressure switches fit the bill. These heavy-duty components feature a corrosion-resistant stainless steel construction and UL ratings for hazardous locations, including:

  • Class 1: Division 1, Groups A, B, C, D
  • Class 2: Division 1, Groups E, F, G

With high overpressure capabilities and a NEMA Type 7 explosion-proof rating, the 703-U/UJ Series integrate a rugged piston design, which enables these switches to withstand high pressure spikes, shock and vibration. The 703-U Series features factory-set fixed pressure, while the 703-UJ features field-adjustable pressure. Designed for easy field adjustment, the 703-UJ also incorporates a tamper-resistant locking mechanism to maintain set point integrity.

Additional features and specifications of the 703-U/UJ Series include:

  • Pressure range: 6 to 5,000 PSI
  • Temperature range: -40 to +180°F (703-U Series)
  • Pressure connection: 1/4-inch–18 NPT (male) and 1/2-inch–14 NPT (male)
  • Single pole double throw (SPDT) option
  • Double pole double throw (DPDT) option
  • 1/2-inch NPT electrical connection with five full threads for conduit engagement
  • Factory-sealed lead wires — Type UL 1015 AWG #18, 24 inches long
  • Hydraulic and electric modules AISI 316 stainless steel

Thanks to their durable construction, 703-U/UJ pressure switches boast exceptional accuracy and repeatability — even in explosive environments. And, they guarantee a long service life; the units’ snap-action electrical switch is tested to 1 million cycles. For these reasons, the 703-U and 703-UJ Series are ideal for applications like off-shore exploration, petrochemical processing, oil and gas pipelines, control panels and industrial OEM equipment.

To learn more, please visit our product page.

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Careers

Mechanical Engineer

Job Description:

Immediate opening for a mechanical engineer with experience in the design of small pneumatic and hydraulic assemblies such as pressure switches, valves, gauges, small pumps, and/or small electro-mechanical devices.  The successful individual will join the new product development team in our Riverdale, New Jersey facility to conceptualize and design and develop new products such as pressure switches, transducers, aneroids, thermostats, and bellows assemblies. The mechanical engineer will be the mechanical project lead for new projects and interact with customers, sales, suppliers, manufacturing, and quality throughout all phases of the product development cycle. Other responsibilities include support of existing products and product improvement initiatives, ECO generation, creation of test plans, and overseeing prototype assembly and test.

Requirements:

  • B.S. in Mechanical Engineering from an accredited university
  • Five to seven years of relevant design experience

Qualifications:

  • Proficient in the use SolidWorks, FEA, and geometric tolerancing
  • Strong problem-solving skills
  • Demonstrated creative thinking in new product development environment
  • Skillful in the selection of materials based on mechanical and chemical properties
  • Experience interacting with machinists and prototype shops
  • Proven ability to generate DOEs, POCs, and test plans to verify concepts and designs
  • Understanding of configuration control management

We offer an excellent salary commensurate with experience, 401K, financial incentives based on realized company’s goals, flexible hours, and a comprehensive medical benefits package.

Sigma-Netics, Inc. is an Equal Opportunity Employer.

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Careers

Mechanical Engineer, Entry Level

Job Description:

Immediate opening to join the new product development team in our Riverdale, New Jersey facility to assist in the design and development of new products such as pressure switches, transducers, aneroids, thermostats, and bellows assemblies. The entry level mechanical engineer will work with senior mechanical, electronic, and manufacturing engineers to create new products, support existing products, generate ECOs, assist in the creation of test procedures, perform tests, analyze data, and present findings.

Requirements:

  • B.S. in Mechanical Engineering from an accredited university or college

Qualifications:

  • Knowledge of SolidWorks is highly desirable
  • Strong problem-solving skills using sound engineering principles
  • Basic knowledge of geometric dimensioning a plus
  • Ability to work with others in a cross functional team environment
  • Excellent communication skills

We offer an excellent salary, 401K, financial incentives based on realized company’s goals, flexible hours, and a comprehensive medical benefits package.

Sigma-Netics, Inc. is an Equal Opportunity Employer.

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Blog

Sensing Elements Take Front and Center On Our New Website

At Sigma-Netics, we’re excited to announce the launch of our brand new website, which has made it easier than ever for you to learn about our new line of pressure transducers. Thanks to the site’s sleek, user-friendly design, you can also explore our technical resources, configure your own sensing element, learn about our company and more.

Browse our products with ease. Whether high pressures, radiation or fatiguing conditions—it doesn’t matter. Our ruggedized sensing elements stand up to the toughest industrial and aerospace applications with high accuracy and reliability. You can find more information about our high-performance products on our newly designed homepage, as well as on the navigation bar along the top.

Get a quote for sensing elements in just a few clicks. You can specify and receive a quick quote for our pressure switches, pressure transducers and metal bellows. Simply click here to fill out your contact information and application details. You also have the option to upload and send us any drawings or related files if you need a custom configuration.

Explore our technical resources. Toward the bottom of our homepage, you’ll find a sampling of our latest technical resources, including featured videos, white papers and blog posts. For a deeper dive into this content, you can click on “technology resources” at the top of our site.

Learn more about our company. In addition to learning more about our products, you can learn more about our company—including our history, manufacturing capabilities, quality certifications and job openings. We even have an option for you to provide us with feedback as part of our quality management system.

To get started, check out our new home page.

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Blog Pressure Transducers

Explore the SST 74X-UV Pressure Transducer In Our New Video

Check out this quick overview of our SST 74X-UV Submersible Vehicle Depth Pressure Transducer. This compact, 90-gram model features shallow diaphragm sensors and a configurable flange design for outboard or inboard bulkhead installation. Units include an all-welded hermetic construction that resists shock and vibration.

The SST 74X-UV Series is ideal for many demanding applications, including unmanned underwater vehicles, salt spray environments, high-viscosity fluid applications and more. You can learn more about its features and specifications in our latest video.

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703-UJ UL-Rated, Explosion Proof Pressure Switch