Stainless Steel Union Hydraulic Mini 3/8 Check Valve

• Customization: Available
• Media: Water
• Temperature: High Temperature
• Material: Stainless Steel
• Connection Form: Welding
• Structure: Check Valve
• Pressure: Low Pressure
• Function: Check
• Sealing Form: Bellows Globe Valve
• Flow Direction: Unidirection
• Standard: DIN
• Application: Water Industrial Usage
• Size: 1/2"-4"
• Transport Package: Wooden Case
• Specification: 1/2"-4"
• Trademark: JONENG
• Origin: Wenzhou China
• HS Code: 8481804090
• Production Capacity: 3000PCS/Year
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 50.000kg

Product Description

Stainless Steel union hydraulic mini 3/8 check valve

Stainless Steel union hydraulic mini 3/8 check valve is a hygienic one-way valve designed to allow fluid to flow in a single direction while automatically preventing backflow. Made from high-quality food-grade stainless steel, it features a smooth, crevice-free interior that ensures easy cleaning, corrosion resistance, and compliance with sanitary standards. The ball swing structure provides reliable sealing with minimal pressure loss, making it ideal for liquid transfer applications in food, beverage, dairy, and pharmaceutical processing systems where hygiene and flow efficiency are essential.

Is typically installed after pumps, tanks, or pressure-sensitive components. At this position, it is used to automatically stop reverse flow when the system pressure changes, thereby protecting equipment from damage, maintaining consistent pressure and directional flow, and ensuring safe, contamination-free fluid transport throughout the sanitary production line.

We supply a complete range of sanitary ball swing non-return valves to meet various pipeline configurations:

• One Way Ball Swing Mechanism - Automatically allows media to flow in one direction while preventing reverse flow.

• Compact Wafer-Type Design - Space-saving, lightweight construction with minimal pressure drop for maximum efficiency.

• Hygienic Food-Grade Finish - Smooth, crevice-free, mirror-polished surfaces eliminate residue buildup and contamination risks.

Working Principle
The stainless steel sanitary ball swing check valve operates automatically: during forward flow, the ball swings open freely to allow passage; when flow reverses, the ball closes instantly, preventing backflow and protecting system integrity. Its wafer-type body ensures easy installation between flanges, while the vertical in-line setup provides stable, hygienic, and leak-free operation.

Specifications

• Size range: DN15 - DN200 (1/2" - 8")

• Connection types: Wafer, Tri-Clamp, Welded, Flanged (DIN, ISO, SMS, 3A standards)

• Working pressure: Up to 10 bar

• Working temperature: -20°C ~ 200°C

• Surface finish: Mirror polished inside & outside, Ra ≤ 0.8μm

• Installation: Vertical in-line pipelines

• Applicable media: Food, beverages, dairy, pharmaceuticals, pure water, bioprocessing, chemicals

Advantages

• OEM customization available for unique system requirements

• Certified materials (ISO 9001, FDA, 3A, SGS) for full international compliance

• Automatic hygienic sealing for leak-free performance and system safety

• Fast delivery within 7-10 days for urgent projects

• 20+ years of export experience ensuring reliable and professional cooperation

Product Description

Food Grade Stainless Steel Ball Swing Non Return Check Valve:

1. Reliable One-Way Flow Control - Designed to allow fluid to flow in only one direction, this valve effectively prevents backflow and ensures safe pipeline operation.

2. Ball Swing Mechanism - Utilizes a precision-engineered ball swing design that opens smoothly under forward pressure and closes instantly under reverse flow, minimizing leakage risk.

3. Hygienic Sanitary Construction - Features food-grade stainless steel with mirror-polished, crevice-free surfaces, ensuring easy cleaning and compliance with sanitary standards.

• Durable and Corrosion-Resistant - Built with high-quality stainless steel, the valve delivers long service life, excellent corrosion resistance, and stable performance in demanding environments.

• Easy Installation and Maintenance - The wafer-style compact structure allows quick installation between flanges, while the simple ball swing mechanism reduces maintenance requirements.

• Versatile Industry Applications - Widely used in food, beverage, dairy, pharmaceutical, biopharma, water treatment, and chemical processing, meeting the strictest hygienic requirements.

 

Product Parameters

 

Packaging & Shipping

 

FAB

Feature	Advantage	Benefit
Wafer-type compact design ensures easy installation in tight pipeline systems without requiring extra space. Swing check mechanism provides smooth one-way flow control with minimal resistance. Sanitary-grade polished surface eliminates crevices and reduces the risk of contamination. In-line vertical installation capability offers flexibility for diverse system layouts. CIP/SIP compatibility allows seamless integration into hygienic processing environments.	Reliable backflow prevention protects pumps, tanks, and sensitive equipment. Low-pressure drop design maintains high process efficiency and reduces energy consumption. Maintenance-friendly structure with simple disassembly for cleaning and inspection. Versatile application in food, beverage, dairy, pharmaceutical, and water treatment industries. Durable sealing performance ensures consistent system protection over extended use.	Enhances product safety by preventing contamination risks from reverse flow. Reduces operational downtime with easy maintenance and long-lasting reliability. Improves process efficiency by minimizing energy loss across the valve. Supports strict sanitary compliance required in high-purity industries. Provides long-term cost savings through reduced wear, lower maintenance, and extended service life.

 

 

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Company Profile

 

 

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JoNeng was established in July 2007, located in Wenzhou, China. Totally 100 nos of workers and the factory Covers 7000m2. Till now, we have 50 sets of LG Mazak machines, local CNC machines,automatic machining unit.We have the full inspecting quality control equipment: 1nos Ra roughness instrument, 3nos stainless steel spectrometer,roundness instrument,thickness instrument, radius instrument, 3 nos pressure testing center.
We have three manufacturing factories under Joneng enterprise.
Jiayuan is especially into elbow, tee, reducer,manifolds,fittings in both sanitary grade and schedule grade ;
Lingdong is focusing into ferrule, union, sight glass, butterfly valves which are produced from CNC machines;
Ezo is into manhole covers, hoppers and small tanks.

We mainly manufacture:
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Stainless steel mixing tank, storage tank, reactors...

The products are produced according to SMS, DIN, AS, BS, BPE, JIS,JIS, ISO,ANSI B16.5, ASME and other standards. They also can be customized. Our products have been exported to dozens of
countries and regions such as Europe, America, Middle East,Australia,Turkey, Iran,Thailand... more than 100 countries.
Joneng is approved with CE, PED, ISO9001, ISO14001 quality management system. The products are complied with FDA certificate.
The product can be widely used in Dairy, Beer, Wine,Beverage, Food, medicine, Chemical,Water Treatment and other fields.
JoNeng always insist in "What we say, What we do". Our goal is to make a centennial factory. We always believe honesty and responsibility is the only way leading to long term business relationship. Wishing to have a cooperation with you for more than 10 years.

More advantages of the company:
√ With 17 prolific years of dedicated expertise in the industry, we embody an unwavering commitment to quality and innovative solutions.
√ Spanning an impressive 6800m2, our state-of-the-art facility is adeptly equipped to manage diverse production demands with flawless efficiency.
√ Our skilled workforce of 100 employees fuels our engine of excellence and propels our growth trajectory.
√ Thriving in over 100+ countries, our expansive global reach is a testament to the trust and satisfaction our international clientele repose in us.
√ With a formidable network of 1000+ partners worldwide, our collaborative endeavours continue to drive success and shared aspirations.

 

 

OUR PRODUCTION CAPACITY 

 

Production Lines	Stainless steel sanitary pipe fittings' line, machining line, sanitary manhole line,
Product Range	Sanitary butterfly Valve, sanitary diaphragm valve, sanitary pipe fittings, union, ferrule, sight glass, manhole cover, safety valve, sampling valve...
Year Established	2007
Factory Size in Square Meters	5000M2
NO. OF TOTAL STAFF	130
Production Capital	8 000 000 USD
Detail capacity	Manhole covers	12000nos
	Pipe fittings	150000nos
	Ferrules, unions, connectors	200000nos
	Diaphragm valves	15000nos
	Butterfly valves	20000nos
Investment in Manufacturing Equipment	750000USD
Details of equipment	For machining parts 29 nos of LG Mazak CNC Machines 4 nos of local CNC machines 2 nos of automatic CNC center 12 nos of plain lathe For pipe fittings 4 nos of press 3 nos of cutting machine 3 nos of chamfering machine We also have the following quipments 4 nos of polishing machine 12 nos of grinding machine 3 nos of laser marking machine 3 nos of pressure testing machine 1 nos of temperature testing machine 3 nos of spectro instrument 1 nos of surface roughness device
Primary Competitive Advantages	Strict inspection, honest business way, fast revert on order problem
Stocked materials	Big quantity for raw forging of butterfly valve, diaphragm valve, ferrule, union, adapters, pipe fittings, clamps, sight glass, safety valve, manhole cover,
OEM Services Provided	Yes
Design Service Offered	Yes
Sales Volume	6 000 000 USD
Export Percentage	80%
MAIN MARKET	USA, Germany, Hungary, Canada, Thailand, Holland, England, South Africa, Indonesia, Saudi, India, New Zealand, Australia, Middle East...
Own Brand Name	JoNeng

Certifications

FAQ

 

1. Are you a trading company or factory? 
We are a manufacturer factory and we also have our own exporting license. 

2. Do you have certificate? 
Yes, ISO, FDA, LFGB, CE, PED certificate. We also have some patents in design. 

3. How do you control the quality? 
In quality control, the most important is to avoid material mixing. 
In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI machines, RA roughness spector, hardness testing machine...All machines help in inspection. 
2 staff inspect during production in different sections
5 staff inspect the finished productions to avoid shortage, poor quality, mixing chemical...

4. How many factories do you have?
Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. 
Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades;
Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; 
while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

5. If there is any quality problem, how do you solve it? 
We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. 
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition. 

6. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 

7. Warranty time? 
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers. 

8. Why trust in us? 
14 years in this industry. It makes us professional. Good credit in this market. 
All of our machines are the assurance of our responsibility. 

9. Free sample? 
Free samples can be provided for first cooperation under sincere cooperation. 

10. What is the MOQ? 
1PCS MOQ is welcome for starting cooperatoon

11. Material certificate? 
Material certificaite, mill certificate, pressure testing certificate, roughness certificate, measure certificate, RT certificate, ...Can be available, please declare when inquiry us. 

12. More questions are appreciated.