Working Principle Of Sanitary Stainless Steel Exhaust Valve With Pressure Gauge

To control fermentation tank pressure, install a sanitary pressure relief valve with integrated gauge at the fermenter top port. Choose SS304 or SS316L body, clamped (Tri‑Clamp) connections, and EPDM seal. Set the spring mechanism to 0.2–2.2 bar via the screw cap. The gauge shows real‑time pressure; when CO₂ exceeds setpoint, the valve vents automatically and reseals. Inspect gauge and seat quarterly; replace diaphragm annually.

The Invisible Hazard: Unseen Tank Pressure

Fermentation produces CO₂ continuously. Without relief, pressure can exceed the vessel's MAWP – causing rupture or product loss. Operators cannot see the buildup; only a gauge provides visibility.

How the Valve Functions

A spring‑loaded diaphragm controls the valve. Adjusting the screw cap sets the release point. The gauge displays current pressure. When pressure exceeds setpoint, the diaphragm lifts, venting CO₂. Once pressure drops, the spring reseats the diaphragm.

• 🔧 Adjust screw cap to calibrate set pressure (0.2–2.2 bar)

• 📊 Gauge shows real‑time pressure continuously

• 🌬️ Excess CO₂ vents automatically

• 🔄 Valve reseals after pressure normalises

Manual release is available by pulling the spindle. This sanitary air relief valve ensures reliable overpressure protection.

Material and Connection Options

SS304 is standard for most beer and beverage applications. SS316L offers chloride resistance for aggressive CIP chemicals and acidic products. The body fully disassembles for cleaning. EPDM seals handle –10°C to 120°C and resist CIP agents.

Clamped (Tri‑Clamp) connections allow tool‑free removal. Mount at the tank top or side port. Orient the gauge for easy reading. The vent port must direct CO₂ to a safe location.

Why the Valve Is Essential

A sanitary air release valve maintains precise fermentation conditions. Lagers need 0.8–1.2 bar, ales 0.5–0.8 bar. The adjustable spring allows fine‑tuning. The gauge gives continuous feedback without tank opening. These sanitary relief valves are also used in bright beer tanks and CIP circuits.

CIP, SIP, and Maintenance

The valve supports CIP without disassembly. SIP at 121°C sterilises wetted surfaces – EPDM withstands repeated cycles. Clamped connections allow full disassembly when needed.

• Verify gauge reading against a reference monthly

• Check spring tension for fatigue

• Inspect diaphragm and seat for wear

• Clean the vent port to avoid blockage

• Test operation by manual pull

Replace the diaphragm annually or after 10,000 cycles.

Installation Locations

A sanitary relief valve is placed at:

• Fermenter top port – primary CO₂ relief

• Bright beer tank – pressure maintenance

• CIP return lines – prevents vacuum

• Buffer tanks – thermal expansion protection

Frequently Asked Questions

Q: What pressure for lager fermentation?
A: 0.8–1.2 bar (12–17 psi). Set slightly above target.

Q: Does this handle vacuum?
A: No – overpressure only. Separate vacuum relief is needed.

Q: How often to calibrate the gauge?
A: Annual calibration against a certified reference.

Q: What if the vent port is blocked?
A: Inspect during every CIP cycle – blockage prevents release.

Q: SS304 or SS316L?
A: SS304 for most lines. SS316L for aggressive CIP or acidic products.

The sanitary pressure relief valve with built‑in gauge brings visibility to fermentation pressure – enabling precise control and batch‑to‑batch consistency.

Sanitary Stainless Steel Exhaust Valve With Pressure Guage

• Our Sanitary Air Exhaust Valve including Sanitary Clamped Air Relife Valve, Hygienic Thread Pressure Relief Safety Valve, Stainless Steel Safety Exhaust Valve With Pressure Guage.
• The series safety valve is to adjust the spring compression nut to calibrate a particular pressure.the calibration of pressure is to fix the maximum pressure to avoid the equipment damage. In the normal working operating pressure,the valve is closed.When the system pressure exceeds the fsysterm and the equipment.The valve is with start the open device for the CIP cleaning of the safety valve and the piping.
• The safety valve is a special valve through a rigorous calibration,but to make the valve more realistic operating conditions, so the conditions shoud be as mush as possible the scene of the valve and then parity.

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