How does the check valve prevent fluid backflow?

The valve disc opens when pressure at the stem bottom exceeds the top pressure and spring force, closing automatically to prevent reverse flow and accidents.

304/316L Hygienic Welding Spring Check Valve

Name: 304/316L Hygienic Welding Spring Check Valve
Brand: Milee Clean Valve Technology (Zhejiang) Co., Ltd.
SKU: 772868712

Zhejiang, ChinaMilee Clean Valve Technology (Zhejiang) Co., Ltd.

Negotiable

10 Pieces

Product profile

Customization

Available

Media

Water, Oil.Gas

Temperature

High Temperature

Material

Stainless Steel

Connection Form

Clamp

Structure

Check Valve

Pressure

Ordinary Temperature

Flow Direction

Reversing

Standard

3A, SMS, Rjt, ISO

Application

Industrial Usage, Water Industrial Usage

DIN Size

DN25, DN40, DN50, DN65, DN80, DN100

Specification1

DN10-150 or 1/2"-150 and 12.7mm-152.4mm

SMS Size

25.4mm, 38.1mm, 50.8mm, 63.5mm, 76.2mm, 101.6mm

Sealing

Food Rubber

Medium

Liquid Material, Gas

Pressure Control Range

0.5-6bar

Medium Temperature

-10 Celsius Degree+120 Celsius Degree

Surface Treatment

Ra 0.8um

Transport Package

Shrink Wrap-Carton Case-Exporting Plywood Case

Specification

ISO, 3A, SGS, CE

Trademark

AVM

Origin

China

HS Code

8481804090

Production Capacity

1000sets/Month

Key features

Premium Material Options: Constructed from SS304 or SS316L stainless steel for superior corrosion resistance and hygiene.

Multi-Standard Compliance: Meets DIN, SMS, 3A, ISO, RJT, and ASME/BPE standards for global industrial compatibility.

Precise Pressure Control: Opening pressure adjustable between 0.1-0.3bar with a max working pressure of 10 Bar.

High-Quality Surface Finish: Internal surface Ra 0.4-0.8um and external Ra 0.8-1.6um for easy cleaning and sanitation.

Versatile Connection Types: Available in Thread, Weld, and Clamp connections to fit various piping system requirements.

Full Customization Service: Offers OEM/ODM services, full customization, and flexible design adaptation for specific needs.

Certified Quality Assurance: ISO9001 certified manufacturer with CE and FDA certificates ensuring product safety and reliability.

Company profile

In-stock CapacityFast DeliveryManagement CertificationProduct Certification

Milee Clean Valve Technology (Zhejiang) Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤24h

AI-Powered supplier vetting

SummaryAVM Extraordinary Intelligent Control Equipment Co., Ltd. is a manufacturer and seller of valves, pumps, vacuum equipment, and related general and specialized equipment, serving pharmaceutical, food, beverage, and dairy applications. It reports CE product certification and ISO9001:2015 management certification. Production evidence includes stainless steel union output of 120,000 sets and equipment such as lathes, polishing machines, pressure testers, ultrasonic cleaning machines, laser marking machines, and CNC machinery. The supplier supports multiple customization modes and OEM services for popular brands. However, quality traceability is reported absent, corrective-action and complaint procedures lack written records, and there is no valid manufacturing-capacity contract with affiliated subcontractors. Overseas service infrastructure is limited, with no overseas warehouses, showrooms, agents, or branches. Financial information is only represented by years, without sufficient evidence to assess...

Supplier typeThe supplier is presented as an integrated design, production, sales, and service enterprise manufacturing valves, pumps, vacuum equipment, and other general or specialized equipment. Its stated applications include pharmaceutical, food, beverage, and dairy industries, indicating a direct manufacturer profile rather than only a trading role.

CertificationsThe supplier reports an ISO9001:2015 management-system certificate and CE product compliance certification. These are explicit certifications relevant to quality management and product conformity, although the provided information does not specify their scope or validity period.

After-Sales capabilityThe supplier has procedures for corrective and preventive actions and customer complaints, but no written records; it also lacks raw-material traceability identification. Overseas support is limited because it reports no overseas warehouse, showroom, agent, or branch, although it has inventory capability and stated lead times within 15 workdays in the peak season.

Production capacityProduction evidence includes annual stainless steel union productivity of 120,000 sets, equipment including CNC, lathes, polishing machines, pressure testers, ultrasonic cleaning and laser marking machines, inventory capability, six qualified service-capability suppliers, and peak-season fulfillment within 15 workdays. However, the supplier reports no valid manufacturing-capacity contract with affiliated subcontractors, which is a documented capacity-management weakness.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization, and also reports OEM service for popular brands. These statements directly support a broad customization and OEM offering.