Danfoss STC 20A Stop Valve 148B4625, DN20, PS25, Butt Weld
The Danfoss STC 20A (148B4625) is a heavy-duty stop valve designed for industrial refrigeration systems. With a nominal diameter of DN20 and a pressure rating of 25 bar, it features a Y-type flow path for low pressure drop and reliable shutoff performance. Equipped with a handwheel for manual operation and butt weld connections, this valve is compatible with ammonia and fluorocarbon refrigerants. Manufactured in China, it is ideal for cold storage, chillers, and industrial refrigeration applications.
Need help confirming this part?
Send us the part number, equipment model, nameplate information or a product photo. We can check available sourcing options, pricing and lead time.
Product Overview
Danfoss STC 20A (148B4625) Stop Valve
Key Features & Benefits
High Pressure Rating: Rated for a maximum working pressure of 25 bar (PS25), suitable for most industrial refrigeration system pressures.
Y-Type Flow Path: The angled Y-shaped design minimizes pressure drop, ensuring efficient system operation even when the valve is fully open.
Butt Weld Connections: Standard butt weld connections simplify integration into refrigeration piping systems, ensuring leak-free performance.
Handwheel Operation: A large, ergonomic handwheel allows for easy manual opening and closing, even under high pressure conditions.
Multi-Refrigerant Compatibility: Compatible with ammonia (NH3) and common fluorocarbon refrigerants, offering versatility across different system designs.
Durable Construction: Manufactured to strict Danfoss quality standards, ensuring long service life and reliable performance in harsh industrial environments.
Application Scenarios
Industrial refrigeration systems and ammonia plants
Cold storage warehouses and walk-in freezers
Water chillers and process cooling systems
HVAC&R system maintenance and isolation
Piping networks requiring reliable manual shutoff valves
| Parameter | Specification |
|---|---|
| Brand | Danfoss |
| Series | STC |
| Model Number | STC 20A |
| Part Number | 148B4625 |
| Product Type | Industrial Refrigeration Stop Valve |
| Nominal Diameter (DN) | DN20 |
| Maximum Working Pressure (PS) | 25 bar |
| Connection Type | Butt Weld (ANSI) |
| Operation Type | Handwheel Operated |
| Body Design | Y-Type (Angleway) |
| Compatible Refrigerants | Ammonia (NH3), Fluorocarbons |
| Origin | Made in China |
| Application | Industrial Refrigeration, Cold Storage, Chillers, HVAC&R Systems |
Need a Quote?
Request current pricing and availability for this product.
Product Verification & Sourcing
Product availability, condition, origin and lead time can vary by product and supply channel. We confirm the applicable information when providing a quotation.
If you require a specific OEM brand, country of origin, documentation or product condition, please include these requirements in your RFQ.
Can't find the part you need?
If you cannot find the product or part number you are looking for, send us the manufacturer, model number, part number, equipment information or a clear photo. We can check available sourcing options for you.
Related HVAC & Refrigeration Parts
International Standards References
When requesting HVAC or refrigeration components, include any required standard number and edition so that documentation requirements can be checked during quotation.
- ISO — International Organization for Standardization: look up international standards and their scope.
- IEC — International Electrotechnical Commission: find standards for electrical, electronic and related technologies.
These catalogs are reference resources, not evidence of product certification or company accreditation. Applicable requirements and available supporting documents must be confirmed for the specific product and destination.