Beverage & Brewery
Process Overview
Beverage & Brewery — Process Overview
In a brewery, milled malt is mashed, the sweet wort is separated in the lauter tun, boiled with hops and clarified in the whirlpool, then cooled and fermented with yeast. The beer is matured, filtered and packed from the bright beer tank. Soft-drink plants dissolve sugar into syrup, blend it with concentrate and carbonated water, while juice plants extract, pasteurise and aseptically fill fruit juice. Water treatment and CIP serve every line.
For milk and dairy products see Dairy Processing; for vegetable oil see Edible Oil Refinery.
Key Sealing Challenges
- Sugar crystallisation: wort, syrup and juice dry into crystals on the atmospheric side; a Plan 62 hot-water quench dissolves them.
- Solids: mash husks, yeast and fruit pulp need hard SiC face pairs.
- Carbonated product: bright beer pumps must hold pressure above CO₂ break-out to avoid gas at the faces.
- Hygiene: FDA-compliant elastomers and cleanable seal chambers are required throughout.
What mechanical seal is used on brewery wort pumps?
Wort pumps typically use a hygienic single cartridge seal with silicon carbide vs. silicon carbide faces, FDA-compliant EPDM and an API Plan 62 hot-water quench. Hot sweet wort crystallises on the atmospheric side when it weeps across the faces; the quench dissolves it before it holds the seal.
Root-Cause Failure Analysis — Field Example
Symptom: Syrup pump seal sticks and leaks after each weekend shutdown.
├── Incorrect Response: "Fit stronger springs."
├── Diagnostic Evidence Required:
│ ├── Is dried sugar crust present on the atmospheric side and around the springs?
│ ├── Is the Plan 62 quench running, and is it left on during shutdown?
│ └── Was the pump flushed with hot water before stopping?
└── Engineered Solution:
├── SiC vs SiC faces with a continuous Plan 62 hot-water quench.
├── Flush the pump and seal chamber with hot water before shutdown.
└── Double seal on rotary lobe syrup pumps where crusting persists.
Frequently Asked Questions
Why use SiC vs SiC on juice and yeast pumps?
Fruit pulp and yeast cells abrade carbon faces. A sintered SiC pair resists the solids and the acidic juice, and withstands hot CIP.
Can the same seal handle beer and CIP chemicals?
Yes. Sintered SiC faces and FDA-compliant EPDM resist both beer and hot caustic and acid CIP solutions.
Related: Dairy Processing · Edible Oil Refinery · Sugar Refinery · Grain-Based Distillery.
Request a Seal Selection
Send your pump make and model, fluid, temperature, pressure, shaft size and speed to info@gipfelengg.com or use our enquiry form. Gipfel Engineering (ISO 9001:2015, NSIC-registered MSME, Mumbai) designs and manufactures mechanical seals, seal support systems and process pumps.
Equipment solutions: Positive Displacement Pumps · Fermenters · Overhung Pumps.
Pump Duty & Mechanical Seal Selection Matrix
Typical values for selection guidance only. Final selection is made against the customer duty sheet.
| Pump duty | Fluid | Typical temp. | Typical pressure (bar) | Seal arrangement | Faces / elastomer | API piping plan |
|---|---|---|---|---|---|---|
| Mash Transfer Pump | Mash with husks | 50–78 °C | 2–4 bar | Single-spring cartridge (hygienic) | SiC vs SiC / EPDM (FDA 21 CFR 177.2600) | Plan 62 hot-water quench |
| Wort Pump / Hot Wort Pump | Sweet wort, hot | 75–100 °C | 2–5 bar | Single-spring cartridge (hygienic) | SiC vs SiC / EPDM (FDA 21 CFR 177.2600) | Plan 62 hot-water quench against sugar crystals |
| Yeast Pump | Yeast slurry | 0–10 °C | 2–4 bar | Single-spring cartridge (hygienic) | SiC vs SiC / EPDM (FDA 21 CFR 177.2600) | Plan 62 quench |
| Bright Beer / Filler Feed Pump | Filtered beer with dissolved CO₂ | 0–4 °C | 2–6 bar; keep pressure above CO₂ break-out | Single-spring cartridge (hygienic) | SiC vs carbon / EPDM (FDA 21 CFR 177.2600) | No external flush |
| Sugar Syrup Pump (centrifugal or rotary lobe) | Sugar syrup, high Brix | 20–70 °C | 3–8 bar | Single-spring cartridge; double seal on lobe pumps where syrup crusts | SiC vs SiC / EPDM (FDA 21 CFR 177.2600) | Plan 62 hot-water quench |
| Juice / Pulp Pump | Fruit juice with pulp, acidic | 5–95 °C (pasteurisation) | 2–5 bar | Single-spring cartridge (hygienic) | SiC vs SiC / EPDM (FDA 21 CFR 177.2600) | Plan 62 quench |
| Deaerated / Process Water Pump | Treated water | Ambient | 3–6 bar | Wave-spring semi-cartridge | SiC vs carbon / EPDM | API Plan 11 |
| CIP Supply / Return Pump | 1–2 % NaOH, acid, hot water | 70–85 °C | 3–5 bar | Single-spring cartridge | Sintered SiC vs sintered SiC / EPDM | No external flush; return pumps must handle entrained air |
Reviewed by Gipfel Engineering’s technical team.
Technical Information Disclaimer
The information on this page, including process descriptions, flow diagrams, operating ranges, seal arrangements, materials and piping plans, is general technical guidance for information only. Values shown are typical industry ranges, not guaranteed ratings or specifications of any Gipfel Engineering product. Each application differs. Seal selection, material compatibility, installation and operation must be verified by qualified personnel against the specific equipment data sheet, process conditions, applicable codes and the pump manufacturer’s instructions. A binding recommendation is given only in a written quotation or technical offer from Gipfel Engineering.
References to standards (such as API 682, ISO 21049, ISO 3069, FDA 21 CFR 177.2600 and NACE MR0175 / ISO 15156) describe common industry practice. They do not mean that any product is certified, qualified or approved to that standard unless this is confirmed in writing for a specific order. Third-party company and product names, including “equivalent to” references, are used for identification only and remain the trademarks of their owners. No affiliation, endorsement or OEM approval is implied.
Compliance with safety, hazardous-area, environmental and statutory requirements at the user’s site remains the responsibility of the plant owner or operator. To the extent permitted by law, Gipfel Engineering accepts no liability for loss or damage arising from reliance on this general information without a confirmed written recommendation. Content may change without notice.