Pure Steam Generators

Download CAD Files of Pure Steam Equipment and Storage Tanks

Autoclave Sterilization

Paul Mueller Company pure steam generators are capable of producing pyrogen-free and endotoxin-free steam. The output from our generators meets all U.S. Pharmacopeia (USP) requirements for use in autoclaves, critical area humidification, routine steam-in-place (SIP) sterilization and many other biotechnology manufacturing processes.

The terms pure steam and clean steam are often used interchangeably in the pharmaceutical industry. However, not all equipment marketed as clean steam generators are up to the task of producing WFI quality pharmaceutical pure steam. Paul Mueller Company pure steam generators use a tangential nozzle to provide separation of impurities from incoming feedwater, producing pyrogen-free steam that, when condensed, meets USP requirements for water for injection.

Simple Design, Range of Sizes

Paul Mueller Company pure steam generators have a simple, robust design that minimizes moving parts. This design minimizes maintenance and downtime, ensuring that your facility has pure steam when it is needed. 

We have nine sizes of units, ranging from 600 lb/hr to 10,500 lb/hr, to ensure that you can find the right size for your facility.  Our PSGs are capable of wide turndown, allowing you to buy for the future, but still operate efficiently today.

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Pure Steam Condenser Attachment for WFI

If you need small amounts of water-for-injection – up to 150 gph – your pure steam generator can be fitted with a condenser to allow the unit to make both pure steam and water-for-injection.  This option allows for increased versatility from your one piece of equipment or can provide redundancy for your critical utilities. 

Defining Features

  • External evaporator provides improved access for inspection and preventative maintenance
  • Separation column contains no internal components that require inspection or periodic maintenance
  • Maintenance can be performed with only 24" of space on all sides
  • All components are fully drainable, including the feedwater pump


  • Pure steam temperature control
  • Allen Bradley Compact Logix PLC and operator interface terminal (OIT)
  • Level control system
  • Start-up services utilizing a factory-based service technician
  • Comprehensive documentation package

Optional Features:

  • Feedwater pump system
  • Pure steam condensate sampling system
  • Pure steam analyzer
  • Stainless steel sheathing and frame
  • Feedwater analyzer
  • Degasser
  • WFI production

Specifications and Sizing

Model No. Capacity
Height Width Depth
P7060 600 (272 kg/hr) 94" (239 cm) 48" (122 cm) 46.5" (118 cm)
P7140 1,300 (590) 107" (272 cm) 48" (122 cm) 46.5" (118 cm)
P7145 1,850 (839) 107" (272 cm) 48" (122 cm) 46.5" (118 cm)
P7310 2,300 (1,043) 115" (292 cm) 50" (127 cm) 54.5" (138 cm)
P7315 2,900 (1,315) 115" (292 cm) 50" (127 cm) 54.5" (138 cm)
P7500 4,000 (1,814) 126" (320 cm) 50" (127 cm) 61.5" (156 cm)
P7505 5,700 (2,586) 126" (320 cm) 50" (127 cm) 61.5" (156 cm)
P7990 7,300 (3,311) 143" (363 cm) 61" (155 cm) 63.5" (161 cm)
P7995 10,500 (4,763) 167" (424 cm) 61" (155 cm) 63" (161 cm)

Replacement Parts

Replacement parts for your Pure Steam Generator are available by calling our PyroPure parts specialists at 1-800-MUELLER ext. 9758 or +1 (417) 575-9758 or using the form below.

Mueller PyroPure service technicians are available for routine maintenance activities, system troubleshooting, or full overhauls. Contact the PyroPure service department at 1-800-MUELLER or using the form below.


Finding the right equipment that fits within your budget can be daunting. At Paul Mueller Company, we understand your needs. That’s why we offer Leasing options that give you more flexibility.

Tell us more about your needs.