Custom Injection Molding for Diaphragm Pump Covers

Tool Making Process:CNC machining, EDM/wire EDM machining

Part Making Process:Plastic Injection Molding

Plastic Material:PPS+GF40%/PA66+20%GF，Food grade PP，Medical grade PP, etc.

Favourite Features:Strict quality control；lead time is only 3 weeks from tooling building to T1 trial shot

Customer Background

Our customer is from Germany. He has more than 30 years of pump design experience for medical and diagnostic instrumentation. Our customer designed a series of diaphragm pumps and he needed us manufacture diaphragm pump plastic covers according to his part designs. We worked in close collaboration with this client and from now on we finished 46 new projects about injection molding pump housings for his company.

Our Advantages

We have professional engineering team and technical team, which can provide our overseas customers a complete manufacturing solution that covers every aspect of positive material identification, mold design, tool making, part fabrication, finishing, and final inspection for your custom plastic pump covers.

We have successfully provided all kinds of micro pump covers’ production technology solutions for our customers from different countries, such as England, Germany, the United States, Canada, Australia, New Zealand, Japan, South Korea.and Israel, etc.

We have over 20-year experience in manufacturing a range of plastic covers for gas diaphragm pumps, liquid diaphragm pumps, peristaltic pumps, linear diaphragm pumps and accessories, so we can rapidly produce pump housings that meet

Gas Diaphragm Pump Covers

Liquid Diaphragm Pump Covers

Peristaltic Pump Shells

Linear Diaphragm Pump Shells

Pump Accessories

DiaphragmPump Accessories

Customer Requirement

1. A pump’s lifetime performance is very critical because our customer want to improve productivity while reducing energy consumption and maintenance; Therefore, the diaphragm used in the pump should be reliable and never fail.

2. Plastic part sealing area is with high polish ,with rubber part match well and make sure no leak water and air ; nice surface of part with VDI# 24 .

How we Serve

1. For different plastic parts of diaphragm pumps, different materials to can be chosen. Each diaphragm pump cover we made provide a high cycle life due to its suitable materials.

As for body, foot, dics and valve plate, we offer PPS+40GF material due to its high flow, low burr and low gas analysis. Besides, PPS 40GF offers a superior combination of mechanical, electrical, and thermal properties. Therefore, It is widely used in Diaphragm pumps/chemical pumps, shells, valves, impellers, rotors, pipelines, anti-corrosion and temperature resistant pipe fittings, etc.

Valve plate

Body

Foot

As for tube clamp, motor plate, lid lock and new rotor support, we provide PA66+20%GF as the material of their construction due to its strength, dimensional stability and resistance to both heat and abrasion for this under-the-hood application.

Tube Clamp

Motor PLate

Lid Lock

As for tube fitting and fitting of diaphragm pump, we offer FDA PP materials. FDA compliant unfilled polypropylene wetted components is smooth, easy to clean finish. Food grade PP material is microwave safe and nonvolatile, meaning it will not react with any type of food you store in it, whether it's acidic, basic or liquid

Tube Fitting

Tube Fitting

Tube Fitting

2. We offer complete in-house tooling designs and fabrication, advanced machining techniques, and injection molding capabilities to design a precise fit solution. Our all-electric 150 ton injection molding machine incorporates advanced control features, and in combination with our precision built die, we were able to uphold ±0.01mm tolerance.

3. Quality assurance procedures involved both dimensional and surface inspections as well as functional fit tests. When completed, the sealing area of pump housings are with high polish ,with rubber part match well and  with no leak water and air. The pump housings featured a textured VDI# 24 finish on all sealing surfaces, which meet our customer’s requirement.

Top Valve Plate

Back Valve Plate

Outlet Plate

Results and Benefits

When our customer confirmed T1 samples is okay. We continue to produce pump plastic housings for the customer in various quantities with typical turnaround time of one or two weeks, depending on order size. All new projects go smoothly. Our customer was satisfied with the quality of pump plastic covers

At last, he has continued to work with us for all kinds of new projects of pump enclosures for many years. He Loves to cooperate with Alpine, mainly becasue we have rich experience on whole project quality control and lead time is only 3 weeks from tooling building to T1 trial shot for his projects. If you also have a new project about injection molding, please contact us, we will give you the quotation as soon as possible.