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Cold Room Refrigeration Ammonia Neck Flange Check Valve
US$10.00-3,000.00
1 Piece
Product profile
Customization
AvailableTemperature
Low TemperatureCertification
GS, RoHS, CE, ISO9001Model NO.
NRVDMedia
Gas, Oil, Water, AcidStandard
StandardConnection Mode
Butt WeldingPower
AutoMaterial
AlloyType
Self-OperatedNominal Pressure
4MPa, 6.3MPaApplicable Medium
R12, R22, R502, R134A, R404A, R507, R717 and OtherApplicable Temperature
-50 ~ +150Structure Form
Angle & StraightValve Rod Material
304 Stainless SteelApplicable System
Nh3, Freon and CO2Color of Valve Body
Grey or RedCertificate
CE, SGS, TUV, BsiTransport Package
Carton Box or Plywood Box PackagingSpecification
DN25-DN150Trademark
DOFUNOrigin
ChinaHS Code
8481804090Production Capacity
150000 SetsKey features
Multi-Media Compatibility: Suitable for R12, R22, R502, R134A, R404A, R507, R717, NH3, Freon, and CO2.
Comprehensive Certification: Certified by CE, SGS, TUV, Bsi, GS, RoHS, and ISO9001 standards.
Durable Valve Rod Material: Constructed with 304 Stainless Steel for superior corrosion resistance.
Flexible Color Options: Valve body available in Grey or Red to meet specific project requirements.
Customizable Pressure Ratings: Nominal pressure options include 4MPa and 6.3MPa for diverse applications.
Versatile Structure Forms: Available in Angle and Straight configurations for various installation needs.
OEM/ODM Support: Manufacturer offers OEM and ODM services with 6 R&D engineers.
Company profile

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2019-09-02 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤7.22h 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.
Product Q&A
Q:Which refrigerants and media are compatible?
A:
It is suitable for R12, R22, R502, R134A, R404A, R507, R717, NH3, Freon, CO2, Gas, Oil, Water, and Acid.
Q:What certifications does the product hold?
A:
The product holds CE, SGS, TUV, Bsi, GS, RoHS, and ISO9001 certifications.
Q:What materials are used for the valve rod?
A:
The valve rod is made of 304 Stainless Steel to ensure durability and resistance.
Q:What are the available nominal pressure options?
A:
The nominal pressure options are 4MPa and 6.3MPa.
Q:Is OEM or ODM service available?
A:
Yes, the manufacturer provides both OEM and ODM services with support from 6 R&D engineers.
Send Inquiry
*To:
Shandong Dofun Refrigeration Technology Co., Ltd.
Shandong Dofun Refrigeration Technology Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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