TA Associates, GTCR and Hg are among the PE firms making deals in the sector.
Included in the deals are brands that manufacture hydraulic components.
TechVenture Investors and Spectrum Equity will all remain shareholders in Empyrean.
PST provides measurement instrumentation and monitoring products for process-critical applications.
The deal is expected to close in early 2025.
SolomonEdwards is a professional services firm.
The capital infusion will be used to further expand market leadership with its AVX ONE platform and accelerate growth.
Manulift is a supplier of lifting equipment and aerial work platforms.
Silfab is a photo-voltaic module manufacturer.
The investment will be used to support the management buyout of GAP.