Polaris Controls represents SOR in the UK, we serve the oil and gas, power and nuclear industries with precision instruments that measure pressure, level, temperature and flow. No company builds a better product, and no company backs their products with better warranties or better customer service. SOR products are the standard for quality, reliability and durability.

One reason for our continued worldwide growth is the willingness to listen to our customers’ specific needs and develop customized solutions to meet those needs. In fact, a majority of the products SOR manufactures and delivers are specially engineered to order. New products continue to be engineered and developed that integrate features such as wireless and smart technologies.

There are SOR instruments built decades ago that are still in the field, in the harshest environments, doing their jobs every minute of every day. In 1993, SOR earned the highest level of quality registration – ISO:9001 – and we’ve continued to achieve that goal every year since. Quality is the hallmark of our products.





Valves & Controls

Closed Loop Sampling Systems

Nuclear Qualified

Well Monitoring and Control System


We manage the entire process

SOR can handle stringent requirements from many large companies that have standards for piping, NDE, welding, material traceability, corrosion allowance and testing, and inspections.
We start by ordering parts from quality suppliers that can provide traceability all the way back to the mill/foundry. This traceability follows the material along the entire process at SOR. Our systems will manage against heat codes, with Mill Test Reports (MTR) for all the material listed in the product. Detailed inspections are performed on the parts at receiving. These inspections look at the certificates based upon a wide variety of chemical and mechanical properties for the material such as: chemical composition, yield and tensile strength, and hardness. All chamber pressure boundary material coming into SOR facilities must conform to an ASTM standard. After incoming inspection, the material is properly segregated for a specific job in order to keep traceability. In addition, the paperwork for the material flows with the job in a documentation traveler package that is stored with the material and inside our business system.

Exotic Materials

A variety of exotic materials to choose from
SOR has a strong commitment to deliver engineered solutions for standard products. We maintain an inventory of both exotic and well-known materials in house to suit a variety of customer application requirements. SOR has a long history of using exotic materials on pressure ports and parts for the chamber pressure boundary.

SOR has vast experience using:

• Carbon Steel
• 304 Stainless
• 304H Stainless
• 304L Stainless
• 310 Stainless
• 316 Stainless
• 316H Stainless
• 316L Stainless
• 317 Stainless
• 317L Stainless
• 321 Stainless
• 347 Stainless
• 446 Stainless
• Duplex 2205
• F51 Super Duplex
• F5

• Incoloy 800
• Incoloy 825
• Haynes HR160
• Haynes 230
• Hastelloy B2
• Hastelloy B3
• Hastelloy C22
• Hastelloy X
• Hastelloy C276
• F9
• F11
• F22
• F91
• Nickel 200
• Monel 400
• Inconel 600
• Carpenter 20