QUALITY CATEGORY A & CATEGORY B FACTORY

The sine pump is a rotary volumetric pump, also called a rotary volumetric sine pump or a volumetric sine pump. It is one of the few true innovations in the field of volumetric pumps. It successfully solves the problem of slurry transportation in the food hygiene industry. . The sine pump introduces foreign technology and optimizes it. The imported design makes it have strong suction capacity. The sine rotor realizes gentle, smooth and shear-free material transportation. It has been successfully operated in various fields such as food, cosmetics, medicine, chemical industry, etc.

Before buying a lobe pump, you need to know the flow needs and choose the pump from the manufacturer. Manufacturer provides the model of pump data like below picture Lobe Pump Selection table Calculate the flow of lobe pump Per revolution flow means lobe pump rotation in one minute, flow in one minute, take TUL/ TUR-20 as an example, the flow per revolution is 0.12L for a minute. If the rotary lobe pump transfer very thick media, viscosity is 10,000cps, the motor should be worked at low speed, 200 rpm. The calculation of flow in one hour =per revolution 0.12L x 200 rpm x 60 minutes= 1440L/h (1.4m3/h) Of course, the motor speed rpm is different during transfer different media. The motor speed should work at a suitable speed, the higher viscosity, the motor should work lower speed. If work too fast, the pump will shake, make a big noise and even break. Media viscosity less than 500cps should choose the model of at least double-flow because Low viscosity fluids can“slip” at high output pressures, reducing efficiency, not recommend to transfer low viscosity fluids   Select from the table using the viscosity, the maximum recommended speed for lobe pump Viscosity (cP) Recommended motor speed (rpm) 1 – 500 300-500 500cps-3,000 300-500 5,000 – 10,000 150-300 1,0000 – 20,000 150-200 2,0000 – 30,000 100-150 ＞30,000 less than 100

Before that you should figure out your pump application, sanitary pump regularly require to use high clean stainless steel material, sanitary applications e.g. food processing, dairy, beverage, daily chemical, pharmaceutical industry… Industrial application pump material normally is carbon steel, cast iron, copper… Industrial applications require a larger flow than the sanitary pump, up to hundreds of cubic meters per hour, industrial application e.g. oil, gas, agricultural, sewage treatment… Fluid Data The essential information about the liquid you need to transfer. Viscosity Temperature Shear sensitivity Solids content (size & concentration) Fluid type (hazardous, toxic, abrasive, etc.) Among the many factors that influence pump selection and performance, flow requirements, pressure requirements, and fluid characteristics are at the top of the list. Flow Requirements Knowing your flow rate requirement is a must for pump sizing. It is one of the two primary factors for evaluating a performance curve. If your flow rate requirement isn’t already a known value dictated by your process, it can be easily determined. Since flow is measured as volume over time, you need to know how much fluid you need to transfer (volume) and how long you have to transfer it (time). EXAMPLE: YOU NEED TO TRANSFER 1000 GALLONSOF FLUID IN 20 MINUTES; 1000 ÷ 20 = 50 GPM. Viscosity It’s important to factor in pump selection. It’s the resistance of a fluid to flow. When a fluid (gas or liquid) flows, it gets resistance, which is the internal friction of the fluid. To make the fluid flow, it is necessary to add all the linear forces in the direction of fluid flow to counteract the effect of resistance. Before choosing a pump or determining the size of the pump, be sure to determine the viscosity of your fluid. You need a viscosimeter to measure the viscosity of the fluid. If you don’ have it, we can refer to this article with video of Viscosity Comparison Guide Then we can simply choose pump by fluid viscosity. Please see below for the characteristics of each pump Hygienic Centrifugal Pump Sanitary Stainless Steel Centrifugal pump KLX The centrifugal pump works by using the impeller to rotate and make the water produce centrifugal force. Before starting the pump, the pump casing and inlet pipe must be filled with water, then start the motor, so that the pump shaft drives the impeller and the water to do high-speed rotational centrifugal movement, was thrown to the outer edge of the impeller, through the worm-shaped pump casing of the flow channel into the pump pressure pipe. DONJOY centrifugal pump ideal to transfer media low viscosity fluids, Since less viscous liquids are much easier to accelerate with kinetic energy, centrifugal pumps can transfer them much more efficiently than other designs. Not all products are a good fit for the centrifugal pump design. The high-speed impeller creates a very dynamic environment inside the pump casing, which may be harmful to some shear-sensitive fluids. Centrifugal Pump Advantage Ideal to transfer of low viscosity fluids. With high flow rate can easily meet your flow request. Install a valve at outlet can easy to control flow rate. Steady, pulsation-free output. Low purchase cost and maintenance cost comparing with other pumps. Long life spans and have low routine maintenance requirement. Centrifugal Pump Disadvantage Not recommended for viscous liquids. Not recommended for fluids with large suspended solids. Not recommended for shear-sensitive fluids. Hygienic Self-Priming Pump It is similar to the centrifugal pump, but the difference is it has self-priming suction ability max 6meters Self-Priming Pump Advantage Ideal to transfer of low viscosity fluids. It has self-priming suction ability max 6 meters Highly effective as a CIP return pump. Self-Priming Pump Disadvantage Not recommended for viscous liquids. Not recommended for fluids with large suspended solids. Low flow and head compared to standard centrifugal pumps. Hygienic Flexible Impeller Pump Sanitary Flexible Impeller Pump with motor cover As the name suggest, it with special design flexible impeller food grade EPDM or Viton material, self-priming up to 6 meters, soft and gentle pumping shear-sensitive fluids and fluids containing soft or fragile solids kept in suspension, suitable to transfer fluids viscosity less than 1000cps, e.g. milk, cream, yoghurt. Flexible Impeller Pump Advantage Suit for pumping shear sensitive fluids and containing fragile solids Self-priming up to 6 meters Flexible Impeller Pump Disadvantage Not recommended for viscous liquids. Low flow and head compared to standard centrifugal pumps. Hygienic Rotary Lobe Pump LOBE PUMP Donjoy Rotary lobe pump is a kind of positive displacement pump, with sanitary design 3A certified. The pump has two shafts and two cams, some times call it a cam pump. The rotary lobe pump is generally unaffected by system pressures, so it generates a constant flow regardless of changes in the process head pressure. And since it discharges a specific amount of fluid per revolution, the output is easily controlled by varying the pump speed, typically with a variable frequency drive (VFD). It is suitable to transfer high and low viscous fluids, recommend to transfer media viscosity more than 500cps, can transfer fluid contains small particles, large particle recommends to use twin-screw pump. Perfectly use in food processing, dairy, beverage, cosmetic, Pharmaceuticals… Rotary Lobe Pump Advantage Ideal to transfer high viscosity fluids. Offers accurate and consistent output. Reversible direction of flow. Output can be controlled by varying drive speed. Rotary Lobe Pump Disadvantage Low viscosity fluids can“slip”at high output pressures, reducing efficiency, not recommend to transfer low viscosity fluids Typically driven with motor/gear reducer unit creating large footprint. Moderate flow and pressure pulsation. Hygienic Twin-Screw Pump sanitary double screw pump The twin-screw pump is a positive-displacement (PD) pump that use two screws to move high and low visousity fluid and contain large particles, soft handling keep particle intact, capable of handling shear-sensitive products, recommend to transfer very high viscosity fluids, suitable to use in CIP and SIP system, reversible direction of flow. Twin-screw pump pumped fluid flows through screws in an axial direction. Twin-screw pumps can operate over a wide speed range to function in hygienic applications for pumping products at low speed and CIP fluid at high speed. Twin-Screw Pump Advantage Wide range of flows and pressures. Gentle handling of most solids. Wide range of liquids and viscosity. High tolerance for entrained air. Twin-Screw Pump Disadvantage 1.More complexity compared to other types of pumps, higher purchase cost. 2. To accommodate both process and CIP applications, twin screw pumps need to use larger motors than other types of pumps. Pump Performance & Application Factors Pump Performance Curves The most important link between your specific application factors and proper pump selection is the manufacturer’s pump performance curves. Published by the pump manufacturer, they accurately predict how a particular pump will perform in varying conditions.The composition of the performance curve varies from manufacturer to manufacturer, but they generally include most of the performance data you need to begin sizing your pump. 4 things need to know before purchasing a sanitary pump Purchasing a pump can be overwhelming, but once you’ve answered these four specifications, you will be ready to make a decision. First, determine the flow rate. This measures how much fluid is moving and how fast through your process system. Typically represented as gallons per minute (gpm), liters per minute (lpm) or cubic meters per hour (m3/h). Second, determine pressure or head. A measure of force per unit of area, such as pounds per square inch (psi). In terms of pump performance, pressure is a way to define how much resistance the pump can overcome in order to transfer fluid. Third, determine what the fluid is and its characteristics; what is the application?. Is it dense? What are the temperature requirements? What is the size of the contents? Fourth, how will the pump be powered? Is it indoors or outdoors? Starting with these four steps will assist your DONJOY pump expert in helping you select the best pump for your application. DONJOY is known in the sanitary industry as a leader in China. To speak with a Pump expert email donjoy01@cndonjoy.com/Jasmine Zhuang 

Sometimes we also call cavity filled ball valve a full-capsulated ball valve or Non-retention Ball Valve, as we know, the ball valve inside has a ball to control liquid flowing through it. The normal ball valve gasket seal is half-capsulated the ball, normal ball valves usually have a small gap between the ball and the seal, and there will be a slight residue after the medium flows through. The difference is the below PTFE full covers the ball or half covers the ball. The full-capsulated ball valve with non-retention does not have cavities that can trap media that bacteria can feed on and multiply. suit for higher working temperature and long term high-temperature work. Ball Valve PTFE Gasket 3PCS Ball Valve Structure

O-ring seal is a small thing, but it’s a critical thing to have a significant impact on the sanitary valve. Low-quality seal or inappropriate application can cause many problems E.g. leaking, swelling or cracking. It will affect valve lifetime.   Types of O-ring seal EPDM rubber (ethylene propylene diene monomer rubber)is a type of synthetic rubber that is used in many applications. Teflon(PTFE) Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. Viton(FPM) Viton is a brand of FKM, a synthetic rubber and fluoropolymer elastomer commonly used in seals, chemical-resistant gloves, and other molded or extruded goods. Silicon rubber is an elastomer (rubber-like material), usually used in pharmaceutical industry. NBR Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene. The standard of O-ring seal for the sanitary valve Food and Drug Administration (FDA) standards are applied for O-ring seal to use in food and beverage,dairy, brewing, pharmaceutical industries. The temperature and chemical compatibility Types Temperature Chemical Compatibility EPDM -10 – 130 °C (14 – 266°F) good resistance to acid and alkali, good abrasive resistance Teflon(PTFE) -20 – 150 °C (-4 – 302°F) good resistance to acid and alkali，better abrasive resistance，inelastic material Viton(FPM) -10 – 130 °C (14 – 266°F) great resistance to acid and alkali, ozone Silicon rubber -30 – 150 °C (-22 – 302°F) bad resistance to acid and alkali, NBR -5 – 100 °C (23 – 212°F) the best use for oil or fat products, good resistance to acid and alkali DONJOY Sanitary Ball Valve PTFE seat The Teflon(PTFE) has higher hardness, fully PTFE encapsulated ball valve ability to work high temperature for a long time.it’s suitable to use for sanitary ball valve not suit use for butterfly seal.   DONJOY Butterfly Valve O-ring Seal performance DONJOY Sanitary Diaphragm Valve Gasket In addition to the valve body, the gasket is the only direct contact with media parts. Diaphragm valves rely on a diaphragm membrane to isolate the medium from the actuator and the external air. The diaphragm is also a moving part, the membrane moves up and down by the diaphragm to control the flow of the medium or cut off. Donjoy diaphragms valve membrane has been developed and tested over many years according to our own testing methods and standards and under strict third party specifications. Single diaphragm seal EPDM 1 The rubber diaphragm is embedded with a layer of vulcanised fibres to enhance its mechanical properties, the diaphragm has high sealing stability at elevated pressures and temperatures and the reinforcing fibres are hardened on the stainless steel bolts, thus ensuring a better bonding of the rubber to the metal. Specification 1”-4” DN20-DN100 EPDM -10 – 120 °C (14 – 248°F) Double adhesive diaphragm seal PTFE diaphragm is highly resistant to chemicals, extremely stable, resilient, long-lasting, highly leak-tight, non-cold degradable and have excellent resistance to temperature fluctuations, whether in hot, cold or steam sterilisation systems. Specification 1”-3” DN20-DN80 PTFE+EPDM -20 – 120 °C (-4 – 248°F) Double separately diaphragm seal The diaphragm consists of EPDM and PTFE. The special feature of the modified diaphragm is that the diaphragm itself is shaped to seal against the valve body when the valve is in the closed position, thus reducing the diaphragm load and extending its service life. The diaphragm can withstand higher temperatures and severe working conditions. Specification 1/2”-4” DN10-DN100 PTFE+EPDM -20 – 150 °C (-4 – 302°F)

1.What is a sanitary valve? Sanitary valve is a different type from industrial valves, It also called sanitary grade valve or food-grade valve. which is constructed from clean non-toxic stainless steel, designed to controls or regulates the movement of fluid or gas, especially used in food & beverage, dairy, brewing, pharmaceutical, daily chemical, cosmetics industries. Sanitary valve must easy cleaning-in-place (CIP) and circulate CIP fluids. 2.What standard or regulation does a sanitary valve requires? 3-A sanitary standard. The most common standard use in American for valve and fittings is 3-A sanitary standard. Which is specify the criteria for the design and fabrication of equipment that comes into contact with food. The guiding purpose of 3-A Sanitary Standards is to protect public health by using sanitary equipment. Want to know more about 3-A standard, please check this article A Primer for 3-A Sanitary Standards and 3-A Accepted Practices? Donjoy Sanitary valve and fittings are all hygienic design and meet 3-A standard. FDA standard. The full name is the U.S. Food and Drug Administration(FDA Wikipedia ), which is another standard applied to valve gasket. Donjoy valve seal (e.g EPDM, PTFE, FPM, Silicone, NBR, HNBR) all comply with FDA standard. ASME BPE standard is related to how to design and manufacture bioprocessing equipment like valve and pipe fittings intended for use in biopharmaceutical and personal-care products industries. Donjoy sanitary valve and pipe fittings as well as meet the standard. For more details please refer to ASME Wikipedia 3.What’s difference between a sanitary valve and an industrial valve? Material. The sanitary valve body material must use health standards of stainless steel ASI 304 or 316L. But industrial valve body commonly uses carbon steel, alloy steel, cast iron or bronze, which are easily corroded or rust. Metal surface. The hygienic valve and tube fittings require a high standard of the roughness to the metal surface, all parts that contact with the medium must be finely polished. Surface roughness is calculated measuring the average of surface heights and depths across the surface. This measurement is most commonly shown as “Ra”. SF1 RA20=0.51μm. The ASME BPE surface finish table as below: Seal. The seal inside hygienic valve is critical, must meet health standard. Donjoy sanitary valve seal comply with FDA standard. 4. The different application for the sanitary valve and industrial valve. The sanitary valve application is food processing, water, beverage, brewing, dairy, daily chemical, pharmaceutical industries… The industrial valve application is oil, gas, slurry, agriculture… 5. What types of sanitary valve have? Donjoy sanitary butterfly valve Donjoy sanitary ball valve Donjoy sanitary diaphragm valve Donjoy sanitary shutoff valve Donjoy sanitary check valve Donjoy sanitary mixproof valve Donjoy sanitary tank bottom valve Donjoy sanitary pressure relief valve Donjoy sanitary sampling valve 6.Valve Connection Type There are some functional characteristics to end types. Connection end for sanitary valve include: Butt-welded Typically used in high-pressure or high-temperature operations Tri-clamped Easy for installation and maintenance Threaded For low-pressure pipe connection Flanged The most common industrial valve ends for high-pressure pipe connection 7.Sanitary Valve Connection Standard and Size: Matching the Pipeline DIN and 3A, SMS dimension are most commonly used for sanitary pipe connection. Sanitary valve size often means valve port refer to the outside diameter(OD) of pipe. DIN 11851 DIN standards refer to a series of technical standards originating in Germany. These standards are widely used throughout Europe to ensure norms for quality control, safety, environmental protection and rationalisation. Our sanitary butterfly valve DIN size is from DN10 to DN 300. 3A,SMS dimension in inches. It’s the most widely connection standard used in the world.     The benefit of working with sanitary valve manufacturer in China (Donjoy Technology CO., LTD) 1. We manufacture sanitary valve, pump and pipe fittings for 28years, which means we have rich experience, updated and optimized sanitary valve through generations, we solve the problem in advance, with premium quality. 2. Donjoy Technology factory covers an area of 29000 square meters, with more than 300 workers, provide stable production capacity. 3. With more than 200 patents, we have our own design and creativity to keep our products updated. 4. With more than 100 international certificates to ensure the products meet the sanitary standard. 5. Provide the best service and maximum support for customers, whatever before sales or after-sales.

Sometimes we also call cavity filled ball valve a full-capsulated ball valve or Non-retention Ball Valve, as we know, the ball valve inside has a ball to control liquid flowing through it. The normal ball valve gasket seal is half-capsulated the ball, normal ball valves usually have a small gap between the ball and the seal, and there will be a slight residue after the medium flows through. The difference is the below PTFE full covers the ball or half covers the ball. The full-capsulated ball valve with non-retention does not have cavities that can trap media that bacteria can feed on and multiply. suit for higher working temperature and long term high-temperature work. Ball Valve PTFE Gasket 3PCS Ball Valve Structure

Hope to see you in canton fair. Donjoy Booth NO.:19.1F40

Donjoy pump catalogue already update !!! Lobe pump Sine pump Twin screw pump  Centirugal pump  Impeller pump  Mixing pump 

On September 27th, the domestic epidemic was under control and the business stabilized. The company ushered in the "Nanxi River" team building activity. In order to promote the communication between the company's employees and enrich the employees' spare time, they can fully relax and exercise after stressful work. Organized by the Personnel and Administration Department, they will go to Yongjia Nanxi River to kick off the activity.     On September 27th, the domestic epidemic was under control and the business stabilized. The company ushered in the "Nanxi River" team building activity. In order to promote the communication between the company's employees and enrich the employees' spare time, they can fully relax and exercise after stressful work. Organized by the Personnel and Administration Department, they will go to Yongjia Nanxi River to kick off the activity. In the event, everyone created a harmonious and harmonious collective atmosphere, and the event ended successfully. But our passion has not faded, and everyone rushed to sing and perform at dinner. Let us unite our hearts, work hard, and create brilliance with the company. I also wish all employees good health, a happy family and a happy life!

On January 23, 2021, all employees of the company took a group photo, and then an extraordinary company annual meeting kicked off in the company restaurant.   The chairman and general manager delivered speeches and sent blessings to all employees. They said that although the epidemic has disrupted our life and production order, with the efforts of all employees, good results have been achieved in all aspects of work. All departments have done their best to make the company show a good working atmosphere of unity and positive progress.   Next came the interesting links such as songs, dances, and lottery. In order to create a wonderful annual meeting, the multi-talented employees began to rehearse and prepare early.   This annual meeting not only brought joy and laughter to everyone, but also brought the hearts of colleagues closer to each other. The cordial interaction between company leaders and employees, and the exciting lottery activities kept singing, applause, and cheers in the venue. The entire annual meeting was superb, showing the joy and harmony of the Donjoy family. to sum up In 2020, we will be full of hardships. Carry on the past and open the future to welcome the new year, and advance with the times to celebrate the new year. For the upcoming 2021, we have a good heart and full of expectations. Under the correct decision-making and leadership of the company's management, and with the joint efforts and concerted efforts of all our employees, Donjoy will definitely adopt a new attitude and pace in the new year with a spirit of pioneering innovation and advancing with the times. Write a new chapter!

DONJOY WILL ATTEND THE CHINA BREW CHINA BEVERAGE 2020 EXHIBITION WHICH IS IN SHANGHAI NEW INTERNATIONAL EXPO CENTRE DURRING OCTOBER 13-16 2020.  WELCOME TO DONJOY BOOTH NO.:W2-2B68  

Donjoy will attend canton fair during 14-19th October, hope to see you there 

Donjoy Drink technology exhibition in India during 24-26th October,2018, welcome to visit our booth to talking future busines.  

From 2017-7 Donjoy move to new factory.    Donjoy New factory covering an area of 29000 ㎡，with total investment after construction is expected to 120 million yUAN. The base to achieve sales of 500 million yuan. production base, introduces new ABB industrial robot, Janpan Mazar-e-sharif grams of five axis machining center, ABB machines Polishing equipment.

Donjoy, the second generation of automatic control valve is listed, with excellent appearance. It is faster in adjusting the target position, more convenient in connecting to the actuator. The protection grade up to the IP68, lower gas consumption, more interface display.

Donjoy is unfolding with emphasis meets the technology: Biological drugs manufacture diaphragm valve and diaphragm valve system, ASME BPE pipeline and pipeline fitting, high pure pressure relief valve, safety valve as well as products and so on each kind of mutual lack of understanding type commutation regulating valve in the national drugs manufacture mechanical exposition.

Donjoy, the second generation of automatic control valve is listed, with excellent appearance. It is faster in adjusting the target position, more convenient in connecting to the actuator. The protection grade up to the IP68,