Donaldson AG1398301 Culinary Steam Manifold DN 50

A ready-to-install two-stage steam filtration manifold, DN 50

The Donaldson Global Steam Manifold AG1398301 is the DN 50 culinary steam version without a stand. It is an all-in-one steam solution with housings, condensate traps, lockable isolation valves and upstream and downstream pressure gauges, supplied ready to install. The sheet says culinary steam is free of entrained contaminants and suitable for direct contact with food products or product contact surfaces.

Two filter stages are fitted. Stage 1 is a 25 um LifeTec P-GSL N element acting as an entrainment separator and stage 2 is either a 5 um P-GSL N or a 1 um P-GS element as a particulate filter. The DN 50 manifold takes one UF 07/30 element in each stage.

Technical specifications

Manifold range

• DN 25: Culinary, no stand AG1398201; Process, no stand AG1399201; Capacity kg/h 200
• DN 50: Culinary, no stand AG1398301; Process, no stand AG1399301; Capacity kg/h 500
• DN 80: Culinary, no stand AG1398401; Process, no stand AG1399401; Capacity kg/h 1,200

Capacities are approximated at 3.4 barg. A stand with levelling feet and housing jackets is available as an option, with its own part numbers in the same sheet; the with-stand DN 50 version is AG1363801.

Design notes

The sheet lists minimal site assembly, compact design, ergonomic housing height, low differential pressure and high flow capability as the main benefits. Flow characteristic curves are given at 3, 6 and 9 barg for two element configurations: configuration A uses a 25 um then a 5 um P-GSL N element and configuration B uses a 25 um P-GSL N and a 1 um P-GS element.

Purified steam also extends the life of the sterile filters that are sterilized downstream. Select the process version, with PTFE/Fluoraz elastomers, if the steam is not used on food contact surfaces. Check line size, pressure and the element configuration with the process engineer before you order.

Quality assurance testing covers the European framework regulation (EC) 1935/2004, the FDA contact requirements in Title 21 of the Code of Federal Regulations and an internal surface finish better than Ra 1.6 um. The sheet recommends the associated elements by stage and defers the allowable differential pressure to the element data sheets. Inlet and outlet use DIN flanges and the drains and vents are 1/2 inch BSP, so plan the pipework flanges and the trap discharge before installation. Bottled water, dairy, breweries and wineries are the listed industries.

Related Donaldson products: Donaldson AG1423401 Sterile Air Manifold DN25, Donaldson AG1398001 High Flow Skid 4x60 Inch, Donaldson P-SLF 0288-3072 Sterile Air Unit, Donaldson X011297 Hydraulic Filter Cart, Donaldson DCE 125 B Bin Vent Dust Filter 2.5 m2 and Donaldson Ultrasorp Smart AKC 0005-0100 Carbon Adsorber.

What is included in the manifold

Donaldson describes its steam manifolds as a ready-to-install solution with filter housings, condensate traps, lockable isolation valves, and upstream and downstream pressure gauges. Mounting stands with levelling feet and housing jackets are available as options. The design aims at minimal site assembly, a compact footprint, short installation downtime and ergonomic housing heights.

Recommended filter elements

The manifold uses two filtration stages. Donaldson recommends a 25 µm LifeTec™ P-GSL N element in stage 1, acting as an entrainment separator, and in stage 2 either a 5 µm P-GSL N element or a 1 µm P-GS element acting as a particulate filter. For the DN 50 manifold, both stages use UF 07/30 size elements, one element per stage.

Operating limits and materials

• Maximum operating temperature: 150 °C (302 °F) for culinary steam; 180 °C (356 °F) for the process version.
• Maximum operating pressure: 10.3 barg (150 psig).
• Product contact surfaces in stainless steel EN 1.4404 (AISI 316L) or EN 1.4301 (AISI 304), internal surface finish Ra below 1.6 µm.
• Elastomers in EPDM for the culinary version, PTFE/Fluoraz for the process version.
• DIN flanged inlet and outlet, 1/2 in BSP drains and vents.

Donaldson states that the products meet European Regulation (EC) 1935/2004 and FDA requirements for food contact under 21 CFR. The DN 50 culinary manifold AG1398301 (process version AG1399301) weighs 77 kg without stand and measures about 1091 mm long, 165 mm wide and 1156 mm high. Typical users include bottled water, dairy, brewery and winery plants, where culinary steam is in direct contact with food or product contact surfaces.

Why filter culinary steam

Donaldson explains that process steam is used as an energy source for heating and temperature control, while culinary steam is used for food processing and direct product contact. Boiler steam can carry entrained water droplets, pipe scale and rust particles. Culinary steam must be free of these contaminants to be suitable for direct contact with food products or product contact surfaces. Donaldson adds that improved steam quality increases process efficiency and extends the service life of the downstream filters that are sterilised with the steam. The manifold housings are designed to give a low differential pressure at high flow rates, and the estimated flow characteristics in the datasheet are given for saturated steam at 3, 6 and 9 barg.

Documents and quotation

Order enquiries for AG1398301 go through the form. Please verify the line size, steam pressure and element configuration in the attached Donaldson Global Steam Manifold (DIN) data sheet so the offer matches. Related range: Filtration Systems.