Danfoss is celebrating the 25th anniversary of its SVL valve portfolio, which has evolved over the past two and a half decades to meet changing industrial refrigeration requirements, including the adoption of natural refrigerants, increasing system pressures, and growing demand for energy efficiency.
The SVL range—comprising five valve types: Stop Valve (SVA), Regulating Valve (REG), Filter (FIA), Check Valve (CHV), and Stop-Check Valve (SCA)—was formally introduced in 2000, building on Danfoss's earlier experience with industrial valves dating back to the 1950s.
“We wanted to create a flexible design that could support the different directions in which the industrial refrigeration market could evolve,” said Torben Hertel, SVL Product Manager, Manual Valves at Danfoss. “The core product is the same, but we’ve been able to adapt it to meet new requirements along the way.”
A key aspect of the SVL portfolio’s longevity is Danfoss’s in-house manufacturing approach, allowing the company to oversee quality assurance across all stages. All SVL valves undergo in-house durability and field testing and are produced in facilities that comply with industry standards such as ISO 21922-2021, PED, CRN, BV, and DNV.
To meet the needs of growing transcritical CO₂ systems, Danfoss expanded the SVL range with valves approved for up to 65 bar in 2018 and up to 140 bar in 2022. These valves are designed to be serviceable, with features such as replaceable packing glands that can be maintained under pressure.
Customer feedback from regions such as Latin America and Asia has also led to improvements in sealing performance. A redesigned angle sealing structure and enhanced sealing materials have helped reduce dirt intrusion into the seating area, which Danfoss reports has resulted in zero issues since implementation four years ago.
“Building a large-scale system is a considerable investment,” added Hertel. “Our customers can upgrade valve parts to scale the system to meet their changing requirements.”
Danfoss reports that millions of SVL valves have been sold globally over the past 25 years. The company continues to integrate customer-driven improvements into its global production processes.
