Spirax Sarco CSG-HS Clean Steam Generator

Overview

The Spirax Sarco CSG-HS is a fully packaged clean steam generation system purpose-built to guarantee hospital sterilisation-grade steam quality under the rapidly fluctuating load conditions typical of autoclave demand. Designed to exceed the requirements of BS EN 285:2015, the CSG-HS features an integral degasser that strips non-condensable gases (NCGs) from the feedwater before generation, ensuring the Central Sterile Services Department (CSSD) always receives dry, saturated clean steam free of air pockets that would otherwise compromise sterilisation efficacy. Four skid-mounted sizes – CSG-HS-020, CSG-HS-055, CSG-HS-125 and CSG-HS-180 – cover nominal production capacities from 233 kg/h up to 2016 kg/h, giving hospital estates teams a right-sized clean steam generator for departments ranging from a single-autoclave day-surgery unit to a full multi-autoclave CSSD.

As the official authorized partner and exclusive regional representative for Spirax Sarco, Seven Star LLC proudly supplies the Spirax Sarco CSG-HS clean steam generator to hospitals, healthcare authorities, and pharmaceutical manufacturers across the Sultanate of Oman and the wider GCC. The Spirax Sarco CSG-HS is delivered as a factory-tested, skid-mounted package with full manufacturer documentation, and our Muscat-based instrumentation division supports specification, commissioning, and after-sales service, giving regional healthcare projects a genuine, traceable supply route for mission-critical sterilisation infrastructure.

Operating Principle

The Spirax Sarco CSG-HS generates clean steam indirectly, using plant (primary) steam as the heating medium to boil treated feedwater on the secondary side inside a shell-and-tube or kettle-type generator vessel, so the clean steam produced never contacts the primary steam or boiler chemicals used elsewhere in the site’s utility system. Feedwater – recommended to be demineralised or reverse osmosis quality – is dosed continuously into the generator, and the integral degasser vents non-condensable gases before they can accumulate in the secondary steam space, a critical function because trapped NCGs create insulating air pockets on the load surface that prevent an autoclave from reaching true sterilisation temperature even when pressure and time appear correct.

An intelligent PLC running Spirax Sarco’s proprietary SIMS (Steam Injection Modulation System) technology continuously monitors and modulates primary steam admission to match secondary demand in real time, so the system holds stable clean steam quality and pressure even as autoclaves cycle on and off in rapid succession. The practical consequence for hospital estates teams is a clean steam supply that meets EN 285 dryness and NCG limits at every load condition, without the manual valve adjustment, pressure swings, or wet-steam carryover that plague simpler single-element generators during peak sterilisation shifts.

Engineering Design of the Spirax Sarco CSG-HS

The Spirax Sarco CSG-HS is built as a complete, factory-assembled and pressure-tested skid, comprising the stainless steel generator vessel, integral degasser, primary steam control valve train, safety valve set to 7 bar g, sight glass level gauge, pressure gauges, and a wall-mounted control panel with touchscreen HMI, all pre-piped and pre-wired on a common steel baseframe. This packaged approach means the CSG-HS can be installed and commissioned as a single unit outside the sterile core of the hospital, and – unlike alternative steam solutions that require access inside the Sterile Services Department for maintenance – routine servicing can be carried out entirely from outside the sterile environment, minimising contamination risk and eliminating disruption to ongoing sterilisation processes.

Primary-side design pressure is rated to 13 bar g at 195.1 °C, while the secondary (clean steam) side is rated to 8 bar g at the same design temperature, giving a healthy safety margin over the typical 4 bar g operating point used for autoclave supply. Feedwater connections are rated to 8 bar g and up to 110 °C without a pump, or 100 °C with a feed pump fitted, and the whole package is designed for protected indoor installation only, with a minimum ambient of 0 °C. Configurable options allow the control panel, feed pump arrangement, and instrumentation package to be tailored to individual hospital or pharmaceutical project specifications.

Key Features

The Spirax Sarco CSG-HS clean steam generator combines EN 285 compliance with intelligent load-following control, making it the reference solution for hospital and pharmaceutical clean steam supply.

• Designed to exceed the dryness and non-condensable gas requirements of BS EN 285:2015 for hospital sterilisation steam.
• Integral degasser continuously removes non-condensable gases from the feedwater, preventing insulating air pockets that compromise autoclave sterilisation efficacy.
• Intelligent PLC with Spirax Sarco SIMS technology modulates primary steam admission to hold steam quality stable through rapidly fluctuating autoclave load changes.
• Four skid-mounted sizes – CSG-HS-020, 055, 125 and 180 – cover nominal production capacities from 233 kg/h to 2016 kg/h.
• Externally housed relative to the Sterile Services Department, allowing routine maintenance without entering the sterile environment.
• Fully factory-assembled, piped, wired, and pressure-tested skid package for straightforward site installation and commissioning.
• Configurable feed pump, control panel, and instrumentation options to suit individual hospital or pharmaceutical project requirements.
• Safety valve set to 7 bar g protects the secondary steam side of the Spirax Sarco CSG-HS, with primary-side design pressure rated to 13 bar g.

Industrial Applications

The Spirax Sarco CSG-HS is specified wherever hospital-grade clean steam is needed for autoclave sterilisation, and increasingly across pharmaceutical manufacturing, biotechnology, and laboratory sterilisation applications with similar purity requirements. The Spirax Sarco CSG-HS is the common specification wherever EN 285 compliance is required; typical installations include Central Sterile Services Departments in acute hospitals, day-surgery units, dental and endoscopy sterilisation suites, and pharmaceutical clean utility rooms feeding autoclaves, sterilisers, and clean-in-place systems. As Oman’s healthcare sector continues to expand new hospital capacity across Muscat, and as pharmaceutical and medical device manufacturing grows in the Sohar and Salalah free zones, demand for certified, EN 285-compliant clean steam generation has grown correspondingly across the Sultanate and the wider GCC.

As the officially authorized partner for Spirax Sarco, Seven Star LLC distributes the CSG-HS clean steam generator to hospital MEP consultants, healthcare authority estates teams, and pharmaceutical process engineering contractors delivering projects throughout Oman and the GCC. Our regional presence means hospital sterilisation infrastructure projects benefit from local specification support, genuine factory-tested equipment, and after-sales service – rather than relying solely on remote support from Europe for equipment this critical to patient safety.

Technical Specifications

Healthcare estates teams comparing clean steam generation systems will find the Spirax Sarco CSG-HS datasheet a useful reference point. The table below summarizes the key technical specifications of the Spirax Sarco CSG-HS clean steam generator.

Call To Action

Seven Star LLC invites hospital estates engineers, healthcare authority procurement teams, and MEP contractors across Oman and the GCC to submit a formal RFQ for the Spirax Sarco CSG-HS clean steam generator. As the authorized partner for Spirax Sarco in Oman and the GCC, we hold regional technical support capability, provide full datasheets and installation documentation on request, and connect buyers directly with our instrumentation division for sizing and system configuration. Contact Seven Star LLC today to request a Spirax Sarco CSG-HS quotation and secure certified, factory-tested clean steam generation equipment for your hospital or pharmaceutical sterilisation project.