Donjoy Mixproof Valve / Double seat valve for Food Beverage Processing

Technical specification:

Size	DN40-DN150 ,1.5"- 6"
Working temperature	14°F to 266°F (-10 to 130°C), 284°F (140°C) for short time sterilisation.
Max. Working Pressure	145psi (10bar)
Min. working pressure	Absolute vacuum
Compressed air pressure	5.5 bar to 7 bar
Parts in contact with medium	AISI 316L
Other stainless steel parts	AISI 304
Internal surface finish	Ra 32μin (0.8μm) as default, Ra 16μin (0.4μm) as best.
Seat Material	EPDM, FDA177.2600 , (Default) FPM (Viton), FDA177.2600 (Option)
Pneumatic Actuator Types	Normally Closed (NC) - Air to open and spring to close; Normally Open (NO) - Air to close and spring to open; Air to Air (AA) - Air to open, air to close.
Actuator air pressure	79-102 psi (5.5 bar-7 bar)
Units for intelligent control and indication	C-top control IL-top control (Positioner) Electric connection AS-I bus connection
End Connections	butt-welded, tri-clamp
Packaging details	standard export package or customerized

Design Features

Default with normally closed pneumatic actuator
Compact and robust design, forged spherical bodies
Pressure balanced design
One-piece Body & Clamped Body for choose from
A wide selection of different body combinations.
Easy disassembly by releasing the clamp
Cleaning/Sterilization Parts for Options
100% hydraulic tested / 100% inspected

Operations

Actuators
Stainless steel actuator
Units for intelligent control and indication:
C-top control
IL-top control (Positioner)
Electric connection
AS-I bus connection

Connection:
Clamped, welded and threaded,flanged etc.

WORKING PRINCLE DIAPHRAGM

Drawing:

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.

Tag: Mixing proof valve , MIX-PROOF VALVE, Double seat valve

Donjoy was founded in 1993, with registered capital RMB105.58 million(about 15million USD) We focus on developing high-precision PID valve positioner, Valve Control unit, Valve Position feedback device, intelligent automatic control valve, proportional valve, process control valve, high purity pump, homogeneous mixing pump, cleaning technology, pressure vessel, pipeline safety control technology, high clean pipe fitting&pipeline accessories and integrating r&d, production and sales as an integrated national high-tech enterprises. Donjoy’s products are widely used in bio-pharmaceutical, food and beverage, wine, fine chemicals and other industrial fields. Donjoy’s leading technology and innovation solutions meets growing demand in the industry of bio-pharmaceutical, food and beverage from the whole world, special emerging market.

Raw material, processing technology, welding technology, surface treatment and other technology from Donjoy have achieved advanced level in international market. It also complies with a series of international standards and specifications such as ASME BPE, EHEDG, FDA and 3A , It has passed the EU Pressure Equipment Directive (PED-97/23/EC) and (MD-06/42/EC) issued by the German TÜV organization; the 3-A health standard certification issued by the 3A organization; China Safety Valve Special Manufacturing Equipment (TS) License , China Quality Certification Center (CQC) and Quality Management System Certification (ISO9001:2015) and many other international authoritative certifications.

With advanced technology, excellent quality and perfect after-sales service system, Donjoy was awarded as National High-tech Enterprise, Provincial Famous Trademark, Science and Technology Enterprise, Innovative Enterprise, Patent Demonstration Enterprise, R & D Center Enterprise, AAA Credit Enterprise and many other honorary

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