What is the nominal pressure rating?

The nominal pressure options are 4.0MPa and 6.3MPa for most valves, with some specific models like the Neck Flange Check Valve rated at 2.5MPa.

Use for Ammonia System Freon System Cold Storage Fluorine Check Valve

Name: Use for Ammonia System Freon System Cold Storage Fluorine Check Valve
Brand: Shandong Dofun Refrigeration Technology Co., Ltd.
SKU: 786554502

Shandong, ChinaShandong Dofun Refrigeration Technology Co., Ltd.

US$10.00-3,000.00

1 Piece

Product profile

Customization

Available

Nominal Pressure

4MPa, 6.3MPa

Applicable Medium

R12, R22, R502, R134A, R404A, R507, R717 and Other

Model NO.

CVD

Applicable Temperature

-50 ~ +150

Structure Form

Angle & Straight

Valve Rod Material

304 Stainless Steel

Applicable System

Nh3, Freon and CO2

Color of Valve Body

Grey or Red

Certificate

CE, SGS, TUV, Bsi

Transport Package

Carton Box or Plywood Box Packaging

Specification

DN15-DN150

Trademark

DOFUN

Origin

China

HS Code

8481804090

Production Capacity

150000 Sets

Key features

Comprehensive Product Range: Includes stop valves, check valves, solenoid valves, regulators, and filters for NH3, Freon, and CO2 systems.

High-Quality Materials: Valve rods made of 304 Stainless Steel with nominal pressures up to 6.3MPa for durability.

Global Certifications: Products certified by CE, SGS, TUV, and BSI ensuring international safety and quality standards.

OEM/ODM Customization: Supports OEM and ODM services with 6 R&D engineers to meet specific client requirements.

Fast Delivery Time: Average lead time within 15 workdays for both peak and off-season orders.

Versatile Applications: Suitable for refrigeration, petrochemical, nuclear power, chemical engineering, and food industries.

Professional Manufacturer: Established in 2012 with over 10,000 sqm factory and advanced production lines in China.

Company profile

Shandong Dofun Refrigeration Technology Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2019-09-02 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤8.25h CertifiedTerms of Payment: LC, T/T, Western Union

AI-Powered supplier vetting

SummaryShandong Dofun Refrigeration Technology Co., Ltd. is identified as a Chinese manufacturer of refrigeration valves and related industrial equipment, established in 2012 with 85 employees and a 13,000 m² manufacturing area. The supplier reports six production lines, annual refrigeration-valve output of 200,000 sets, quality-control staffing of 11–20 employees, and delivery within 15 working days in both peak and off-peak seasons. It serves domestic and multiple overseas markets and accepts several trade and payment terms. The materials indicate product-development activity and technical capabilities, but provide no verified management-system certifications, after-sales service details, customization evidence, or named customer cases. Company information contains inconsistencies, including different registered-capital and facility descriptions, which should be verified before qualification.

Supplier typeThe supplier is explicitly identified as a manufacturer/factory and operates in industrial equipment and components, with refrigeration valves and related valve products as its stated focus. Its legal and company names vary slightly across the records, but the business type and product orientation are consistent.

CertificationsThe supplier-management-system certification field is explicitly recorded as "NIL." No certification such as ISO is provided in the available information, so certification compliance cannot be established.

R&D capabilityThe supplier states that it pursues continuous product innovation, has six R&D engineers, and operates multiple advanced valve production lines and experimental testing facilities. These statements support some innovation resources, although no patents, formal R&D projects, or measurable innovation outcomes are provided.

Production capacityThe supplier reports a 13,000 m² plant, six production lines, 85 employees, quality-control staffing of 11–20 people, and annual refrigeration-valve output of 200,000 sets. It also states that orders can be fulfilled within 15 working days during both peak and off-peak periods, providing explicit evidence of established production capacity.