Its corrosion resistant 304 stainless steel body makes it ideal for handling corrosive media, steam, air, and various liquids. This article provides the latest 2026 price references and comprehensive selection parameters for DN50 304 stainless steel safety valves.The main safety valve product names of China gate valve Network include:Sleeve Insulation Safety Valve,Safety Check Valve,Static Weight Type Safety Valve,Safety Decompression Valve,sanitary Safety Valve,SFV Danfoss Refrigeration Safety Valve,Thermal Power Station Used Non-standard Safety Valve,Ultra-high Pressure Safety Valve,Vacuum Negative Pressure Safety Valve,Water Heater Safety Valve,YD Type Bursting Disc

2026 Price Reference for DN50 304 Stainless Steel Safety Valve

The price of a DN50 304 stainless steel spring loaded safety valve varies significantly based on connection type, pressure rating, valve design, and brand. Below are current 2026 market reference prices:

A threaded connection DN50 304 stainless steel safety valve from established brand Luofu Valve, model A21W-25P with PN25 pressure rating, is priced at approximately 2,435 CNY per unit (tax inclusive) on authorized B2B platforms. This valve is suitable for water, air, and corrosive gases or liquids with temperature up to 150 degrees Celsius.

A flange connection DN50 304 stainless steel safety valve from Nanyi Valve, model A42Y-16P with PN16 pressure rating and full-lift design, is priced based on configuration with temperature capability up to 200 degrees Celsius.

A threaded full-lift closed safety valve A22W-16P from Nanyi Valve with DN50 specification supports working pressure up to 1.6MPa and temperature up to 200 degrees Celsius, suitable for corrosive media applications.

For international procurement, stainless steel 304 DN50 safety valves are available at approximately 70 to 80 USD per unit from Chinese manufacturers, with flange connections and full-lift configurations.

Sanitary grade DN50 304 stainless steel spring safety valves with clamp connections for food and beverage applications are priced from approximately 165 to 518 CNY per unit, depending on configuration and brand.

For high pressure applications with PN25 rating and flange connection, the A42W-25P model is available at approximately 1,450 CNY per unit.

Key factors affecting price include connection type (threaded vs flanged), pressure rating (PN16 vs PN25), valve design (full-lift vs micro-lift), certification requirements, and brand positioning. Stainless steel 316L variants typically cost 30-50% more than 304 stainless steel models.

Technical Specifications for DN50 304 Stainless Steel Safety Valves

Material Specifications

The valve body and wetted parts are manufactured from Stainless Steel 304 (CF8), providing excellent corrosion resistance for water, steam, air, and mild corrosive media. The valve disc and seat are typically hardened with Stellite alloy for wear resistance and reliable sealing at elevated temperatures.

Pressure and Temperature Ratings

DN50 304 stainless steel safety valves are available across multiple pressure classes:

PN16 (1.6MPa): Standard rating for general applications, with temperature capability up to 200 degrees Celsius

PN25 (2.5MPa): Higher pressure rating for more demanding systems, with temperature typically up to 200 degrees Celsius

Working pressure control range: Typically 0.05 to 6 bar for sanitary applications

Connection Types

DN50 safety valves are available with multiple connection options:

Threaded connections (G2 or NPT 2 inch) for convenient installation

Flanged connections for permanent, leak-proof installations

Sanitary clamp connections for food and pharmaceutical applications

Socket weld and butt weld for high integrity systems

Valve Design Types

Full-lift safety valves (A42Y, A22W series): Provide maximum discharge capacity, ideal for gas and steam applications where rapid pressure relief is required

Micro-lift safety valves: Suitable for liquid applications with lower discharge requirements

Closed bonnet design: Prevents media leakage to atmosphere, suitable for corrosive or toxic media

Applicable Standards

DN50 304 stainless steel safety valves typically comply with:

GB/T 12241 for design and manufacturing standards

GB/T 12242 for pressure testing and performance verification

API 526 for spring loaded safety valve design (international applications)

Selection Considerations

When specifying a DN50 304 stainless steel safety valve, consider the following factors:

Set Pressure must match the maximum allowable working pressure of the protected system, typically ranging from 0.3 to 1.6MPa or higher depending on the application. Spring selection is critical for accurate pressure control, with multiple spring ranges available for different set pressure requirements.

Discharge Capacity should be calculated based on the maximum system pressure generation rate to ensure the valve can safely relieve excess pressure. Full-lift valves provide maximum discharge capacity for gas and steam systems.

Media Compatibility must be verified, particularly for corrosive chemicals. While 304 stainless steel offers good corrosion resistance, highly aggressive media may require 316L or other specialty alloys.

Connection Type should match existing piping configurations, with threaded connections suitable for smaller sizes and flanged connections preferred for larger or high pressure systems.

Temperature Considerations require confirming the valve's temperature rating exceeds maximum operating temperature. Standard 304 stainless steel safety valves typically handle temperatures up to 150-200 degrees Celsius.

Summary

DN50 Stainless Steel 304 Spring Loaded Safety Valves are essential overpressure protection devices with 2026 prices ranging from approximately 165 CNY for basic sanitary clamp configurations to 2,435 CNY for premium PN25 rated threaded models. International procurement pricing starts from approximately 70 USD for flange connected versions. Selection requires careful evaluation of pressure rating, temperature capability, connection type, and media compatibility. For critical applications, consulting with qualified valve suppliers who can provide certified material test reports and performance data is strongly recommended to ensure reliable system protection.

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