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Sanitary Stainless Steel Weld Double Seat Pneumatic Mixproof Valve
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Sanitary Stainless Steel Weld Double Seat Pneumatic Mixproof Valve


Sanitary Stainless Steel Single/Double Seat Mix-Proof Valve




Product Description

The mixproof valve is aa completely hygienic double sealing valve.
This system allows for  the simultaneous processes in the two bodies of the valve by providing interface between the two fluids, preventing the posibility of product contaminataion.
The leakage chamber and leakage detector can be self cleaned through seat lifting.
The mixproof valve is applied to food-processing industries, especially in the beverage and dairy industries.


Design features:
Valves with normally closed pneumatic actuator
Forged spherical bodies
Judge whether the gasket is  broken by observing whether the liquid flows out on the bottom of the valve.
Easy disassembly by releasing the clamp.
Balanced  design

Operating principles:
-Lift type mixing proof valve is remotely operated by compressed air. It is normally closed before running.
-The mixing proof valve is constructed with two independent plugs, which will form a leakage chamber to atmosphere under normal working status. When occasional failure causes leakage happen, medium will flow into the chamber and be diacharged at the outlet port.

-The leakage chamber is closed when the valve is operating, the medium can flow through one pipeline to another. This valve can be clean in place. Many options of CIP and SIP combination are available to users.(Refer to cleaning sterilization function options)

-Clean system can clean the upper, lower stem and leakage chamber, which ensure the valve to be high hygienic. Effectively cleanig system makes the fluid that special for (CIP) clean in place directly wash all the inside calve body, it takes shorter time than common cleaning system.

-Another beneficial of the high cleaning system is that the lift type mixing proof valve can be applied to aseptic processing. If user's steam into CIP pipeline, the system will constitute a shield that can isolate air.

 Techncal Date:

Products name Sanitary Clamped Pneumatic Double Seat Mixproof Valve with Intelligent Head
Size 1.5"-4", DN40-DN100
Working temperature -10 ºC to 130 ºC (140 ºC for short periods or sterilization)
Max. operating pressure 10 BAR
Min. operating pressure Abslute vacuum
Compressed air  pressure 5.5 bar to 7 bar
Gasket  EPDM (standard) in compliance with FDA 177.2600 NBR, FPM (Viton)
Surface Finish Mirror polished/Sandblast
Connection Welding/ Clamped 
Parts in contact with medium AISI 316L



About Us:
Wenzhou Compass Machinery Co.,Ltd is one of the manufactures which are capable of producing high precision stainless steel sanitary equipment and pipeline connection parts.We are a modern enterprise which integrates scientific research and production.

Compass can provide a variety of products,such as sample valve,divert valve, mix proof valve,pressure relief valve, manual and pneumatic butterfly valve, check valve, diaphragm valve , ball valve, pipe fitting, manhole cover, pump, tube/pipe and other related products. All products can be made according to different materials and industrial standard, such as SMS, DIN, ISO, RJT, DF, BS, DS and BPE. 

Our products are widely applied to dairy, food, beer, beverage, chemical industrial of equipment, and cosmetic industries. All technical aspects have reached the international leading levels and are in conformance with GMP requirements.

Provide process design,machinery manufacturing ,installation,technical training.

Compass applies the most advanced CNC machine from Japan for processing,cutting machines, automatic equipment,complete inspection equipment,excellent quality control system, an after-sale service center and strong production capacity. It makes each products go to forefront of our line and shortens the quality gap between imported equipment as well as accessories.

We persist in the principle of "Quality First,Customer Satisfaction" and will create more excellent liquid fittings to meet customers' requirement by full passion and first-class service.Moreover,we can also design according to your drawing and samples.

We believe that sincere service and good quality will let you cooperate with us and achieve mutual benefits,we welcome worldwide friends to give us more supports and suggestions!!


Q1. Are you a trading company or factory?

   We are a manufacturing factory.


Q2. Do you have certificate for the materials?

    is very important for the food processing machines.


Q3. May I have free sample before ordering?

   Yes,our company is very pleased to send to you free sample for quality test as long as freight cost being paid by buyers themselves.


Q4. What's the payment terms?

   For small testing orders,we accept Paypal,Western Union,T/T and credit Card.

   For mass orders,we accept T/T and L/C.


Q5.How do you control the quality?

   Quality control is very important to avoid material mixing and poor quality.We control the quality from beginning to the end.We only have 304 and 316L two different materials.100% inspection on raw material.During production,different materials in different place.After materials are finished,we choose 10% for inspection.If there is 0.1% problem in 10%,then no excuse to go ahead for inspecting 100% of the materials.


Q6.If there is any quality problem,how do you solve it?

   We are proud that we never let one customer leave us.We are not 100% perfect,there is some quality problem.We try our best to provide the correct materials in the beginning,so we need less time for quality problem.If there is any quality problem,we take the responsibility.We believe what we are doing together,it will get back tomorrow.If we leave our responsibility,customer will leave us.If we always take our responsibility,we keep our customers with us.


Q7.How long is your delivery time?

   For normal production in 7-10days.For bulk order in 15-25days.



   One year warranty for all of our stainless steel products.Gaskets are not included due to the different application for customers.


Q9.More questions are appreciated.




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Wenzhou Xusheng Machinery Industry and Trading Co.,Ltd is a modern enterprise which integrates scientific research and production.

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