Sanitary Self Priming Liquid Ring Pump

Pomac’s Liquid Ring Pump is fully compliant with all relevant standards and has been designed with a heavy emphasis on compactness, robustness, cleanability and low maintenance costs. The open impeller, which is dry mounted, ensures optimal cleaning of the shaft and sealing chamber. The applied O-Ring minimises liquid contact whilst ensuring optimal cleaning of the contact faces of the seal.

All pumps within this range are suitable for being CIP cleaned. The range currently consists of 2 pump sizes and capacities available are up to 60 m³/hr & 4 Bar max deliverable pressure with connection sizing ranging from 2” to 2½” in various types. The pump is entirely machined from cast Stainless Steel AISI 316L with a surface roughness of <0.8 as standard (<0.5 on request) to provide increased corrosion resistance.

Upon request, the pumps can also be delivered in Supra SS 316L and Hastelloy C22. Various O-Ring and Mechanical Seal variants can also be applied to ensure that these pumps meet the requirements of almost any application.

As standard, the range is supplied in a close-coupled configuration encased in a hygienic shroud with adjustable feet, and a balanced stainless steel stub shaft mounts the impeller. Upon request, they can also be provided in a bearing housing execution for high-temperature applications or fitting with hydraulic motors.

Heating jackets and casing drains can also be fitted if required. Motors can be supplied in all efficiency, isolation, protection and voltage classes They are also available in ATEX-compliant executions and fitted with noise reduction measures.

All mechanical seals are supplied to EHEDG & FDA-CFR 21 standards as well as being DIN 24960 (apart from build-in length) compliant. They are available in the following material combinations and variants:

• Carbon / Silicon Carbide
• Carbon / CrMo-Steel
• Carbon / Ceramic
• Hard Metal
• Silicon Carbide / Silicon Carbide
• Tungsten Carbide / Tungsten Carbide
• Carbon / Metal

O-Rings are available in:

• Viton
• NBR
• EPDM
• PTFE

Max Capacity	60m³/hr
Max Pressure	40m
Max Viscosity	500 cPs
Max Temperature	140ºC
Max Suction Lift	6-8m
Connections	2” – 2½”
Connection Types	Couplings: DIN11851, DIN11864-1, SMS1145 Flanges: EN1092-1, DIN11864-2, ANSI Tri-Clamps: ISO2852, DIN32676, DIN11864-3 BSP & NPT threaded
Shaft Sealing	Single, double quench/flush, Inner and outer, EHEDG. according to DIN24960
Sealing Materials	carbonl/CrM, carbon/SiC, SiC/SiC, Tc/Tc
Elastomer Materials	EPDM, Viton, NBR, Teflon, KALREZ, e.g. according to FDA
Wetted Parts	AISI 316L (AISI 316L Mo+Ni or Hastelloy CX2MW N26022 upon request)
Surface Roughness	<0.8 Micron (Std.), <0.5 upon request (Mechanical & Electro-Polished)
Drives	Standard: IEC, IE2, B3/B5, IP55, isol cl. F, PTC Optional: IE3, ATEX, noise reduction

Variants:

1. S1 = Internal Single Mechanical Seal – Unbalanced
2. S2 = External Single Mechanical Seal – Unbalanced
3. B1 = Internal Single Mechanical Seal – Balanced
4. Q1 = Double Mechanical Seal with Quench – Unbalanced
5. Q12 = Double Mechanical Seal with Quench – 1 Side Balanced, according to EHEDG Standards

Seal Quench is also available upon request.

Optional Heating Jacket

All models can be fitted with an optional heating jacket to maintain fluid temperature whilst being pumped and is generally used when transferring for higher viscosity edible oils.

Depending on the area of the application the following, fully interchangeable, design variants are available on request: