Sanitary Air Relief Valve

Mini type of safety valve for the specific volume is small, exquisite appearance, with a lock nut, especially suitable for micro pressure vessel equipment protection. No retention seal design

Details about Sanitary Air Relief Valve



1"-1 1/2" (DN25-DN40)

Body Material

AISI 304

Max Temperature

94°F (90℃), due to plastic ball.

Max pressure

145psi (10bar)


EPDM, Viton (FPM) or NBR,FDA approved

End connection

butt-weld, sanitary tri-clamp

Sanitary Air Relief Valve

Donjoy Sanitary Air Relief Valve is a reliable, automatic air – relief valve which is installed vertically on the top of a pipeline or container, or before the inlet of a pump, where air releasing is required. Hygienic stainless steel design, used in the dairy, food, beverage, pharmaceutical and fine chemical industries. The valve body is composed of two parts and assembled by a clamp. The lower body has a welding/clamp tube.


Sanitary Air Relief Valve 1


Sanitary Air Relief Valve is a reliable automatic exhaust valve, on-demand to clear the air, mounted vertically on top of the pipe or vessel, or at the inlet of the pump at the installation.
Here below are two examples of applications.
Example 1:Air cavity is formed due to the installation of the pipeline, and thus need to release air. In this case, the valve is installed at the top of the pipe.
Example 2:Discharge air at inside of the pipeline of the pump. When the pump opened the air will be automatically discharged and forming a vacuum.In order to avoid the air mixed with products and the appearance of cavitation. In this case, the valve is installed in front of the pump, on top of the inlet pipe.


Operating Principles

The air Release valve is a double-seat valve with a freely movable plastic ball. The ball, which is lighter than water, According to the conditions of pressure to close the upper or lower valve seat.

Pressure conditions

Sanitary Air Relief Valve3

Condition 1,

The pressure, air, or air/products mixture. The ball is lifted from the lower seat. The air be released when the product lifts the ball against the upper seat, closing the valve.


vacuum, air or product, or air/products mixture. The ball moves forwards the lower seat, closing the valve, whether it contains air/product mixture or air/product.

-Product density must be higher than the ball density.
-Vertical installation.
-Pure products.



Frequency Ask Question

Please firstly leave message below for product you need and requirement,I will send you quotaion sheet,then choose the transportation way and check cost,we will send you Proforma invoice for confirm,at last make the payment and we will ship the goods to you.

Delivery time depends on quantity and type of products,for valve and pipe fittings regular is about 7-20days. For pump regular is about 15-25days.

For small amount we require 100% before production.For big amount,regularly T/T 30% deposit, 70% before shipment.

By Bank T/T, L/C, By Alibaba Assurance Order accept Credit Card VISA, Mastercard, E-checking, and we could’t accept Paypal.

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