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KF43 Sanitary Stainless Steel Fermenter Broken Vacuum Welding Exhaust Valve Lift Movable Weight Anti-vacuum Valve

SS316 Sanitary Anti-Vacuum Valve (Weight-Operated Vacuum Breaker)

Safeguard your large-scale sanitary vessels against catastrophic implosion with the Aomite Weight-Operated Anti-Vacuum Valve (Vacuum Breaker).

Engineered for commercial fermenters and thin-walled stainless steel tanks, this crucial safety device instantly breaks vacuum formations caused by rapid draining or sudden temperature drops (such as after hot CIP cleaning). Unlike standard spring-loaded valves, this model utilizes a movable weight on a lever arm, allowing for incredibly precise calibration at extremely low pressure/vacuum thresholds. Crafted entirely from corrosion-resistant SS316 stainless steel and conforming to ISO9001 standards, it ensures a highly reactive, maintenance-free, and sterile air intake (gas media) operation. Backed by a 3-year warranty, we supply customized sizes and connections directly to global equipment integrators.

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Color:	SLIVER
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Model:
34
Brand:
AOMITE

Product Description

Technical Specifications

Parameter	Specification
Product Type	Anti-Vacuum Valve / Vacuum Breaker
Material Grade	SS316 Stainless Steel (Premium Sanitary Grade)
Operating Mechanism	Movable Weight on Lever Arm (Gravity-Operated)
Applicable Media	Gas / Ambient Air
Primary Function	Tank Implosion Protection (Normal to Low Pressure)
Connection Type	Welded / Threaded (Customized to customer's requirements)
Size (Port)	Manufactured to customer request
Certification & Warranty	ISO 9001 Certified / 3 Years Warranty
Applications	Brewery fermenters, dairy silos, sanitary storage tanks

Movable Weight Vacuum Breaker vs. Spring-Loaded Breaker: Which is better?

Weight-Operated (This Product)
Relies on a physical stainless steel weight acting on a lever arm. The massive advantage is precision at ultra-low vacuum limits. A weight never suffers from "metal fatigue" or loses its tension over time. By simply sliding the weight along the arm, operators can perfectly calibrate exactly when the valve should open, making it ideal for thin-walled tanks that can collapse under minimal vacuum.
Spring-Loaded
Uses a compressed spring to hold the seal. While more compact, springs can fatigue, stick, or become less accurate over thousands of CIP cycles, potentially delaying the opening time when a sudden vacuum occurs.

What causes a dangerous vacuum in a sanitary tank?

Hot CIP/SIP Cooling (Thermal Shock): After cleaning a tank with boiling water or steam, sealing it while hot causes the remaining air/steam inside to cool rapidly. As it cools, it contracts violently, creating a massive vacuum that can instantly crush a stainless steel silo.
Rapid Pump-Out: Draining a liquid from the bottom of a sealed tank using a high-capacity pump will suck the tank walls inward if air is not allowed to enter and replace the displaced liquid volume. Our anti-vacuum valve automatically lifts to let air in, neutralizing this threat.