Screw compressors

The HallScrew HSS 3100 series of compressors from J & E Hall International has a stepless capacity-control system and is designed to use R134a and R407C. These compressors are designed for high-temperature applications. There are four models, with displacements at 50 Hz from 175 to 292 m3/h. All models have a new oil-management system, specially designed for the series, with a check valve on the delivery port, a built-in filter and connections for liquid injection and economiser.
Related links:



modbs tv logo

Carrier calls for prioritisation of ventilation in NHS infrastructure plans

As the healthcare sector begins
to plan how new government infrastructure funding will be spent, Carrier is urging NHS estates teams to prioritise ventilation upgrades as part of long-term building improvement strategies.

Specifiers urged to act ahead of looming legislation

Specifiers are being encouraged to switch to efficient secondary hot water circulators ahead of anticipated legislation that will ban inefficient versions of these domestic and commercial plumbing products.