spring loaded safety valve
spring loaded safety valve
spring loaded safety valve
spring loaded safety valve
spring loaded safety valve

Stainless Steel Pressure Relief Spring Loaded safety valve

JN-EHST23-1002-7
Size: 1/2"–4".
Grade: SS304/SS316L.
Standard: DIN, SMS, 3A.
Working pressure: 0.1–1.6 MPa.
Test pressure: 2.4 MPa.
Temperature Range: -20°C to 180°C.
PTFE seals: chemical resistance.
Viton seals: high-temperature sealing performance.
Designed for fast exhaust and reliable pressure protection.
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Stainless Steel Pressure Relief Spring Loaded safety valve

Stainless Steel Pressure Relief Spring Loaded safety valve is a hygienic safety valve that uses a liquid seal principle to control system pressure while allowing visual pressure monitoring. It is commonly installedon the top of fermentation tanks, storage vessels, or process pipelines in sanitary systems such as food, beverage, and pharmaceutical production lines. At this location, the valve maintains stable internal pressure and releases excess gas through the U-shaped water seal, preventing contamination and protecting tanks from overpressure. Typical types includeU-type water seal safety valves, adjustable liquid seal relief valves, pressure-gauge integrated safety valves, and sanitary fermentation tank safety valves, all designed for hygienic pipeline environments.

Stainless Steel Pressure safety relief valvediffers from ordinary safety valves because it uses aliquid water-seal structure to regulate and release pressure, rather than relying only on mechanical spring action. Traditional safety valves mainly open when pressure exceeds a preset limit, while this valve maintains stable internal pressure through the U-shaped liquid seal and allows visual monitoring with an integrated pressure gauge, which is especially suitable for sanitary tank systems. Compared with other manufacturers, our valve features high-precision stainless steel construction, hygienic polishing, and stable liquid-seal design, providing reliable sealing, easy cleaning, and consistent pressure control for food, beverage, and pharmaceutical applications.

Accessories

 Component & Material Table
  • Valve Body – Stainless steel SUS (304 / 316L)
  • U-shaped water seal cavity – Stainless steel SUS (316L)
  • pressure gauge – Sanitary pressure gauge, housing made of stainless steel SUS (304).
  • valve core– Stainless steel SUS (316L)
  • spring – Stainless steel (316L) / Hastelloy
  • sealing ring – EPDM, PTFE/or silicone rubber
  • Quick-install clamps– Stainless steel SUS (304)
Product Parameter Details
  • Structural Form：Spring-loaded, micro-opening, sanitary U-shaped water seal quick-release structure, with pressure setting and pressure gauge display.
  • Pressure range：0.1~1.6MPa
  • Main functions：The system automatically opens to release pressure when overpressure occurs and automatically closes after the pressure drops, protecting pipelines and equipment; the pressure gauge displays the pressure in real time.
  • Applicable Level：Sanitary
  • Specification Standards：DIN, SMS, 3A, ISO, IDF
  • Certification / Registration：Optional FDA-compliant seals, 3A certification, material traceability, pressure testing and safety compliance documentation.
  • Hygiene and safety levels：GMP, FDA, 3A, USP Class VI
  • Installation direction：Vertical installation is possible; some models can be installed horizontally.
Stainless Steel Pressure Relief Spring Loaded safety valve
 
Feature (F)、Advantage (A)、Benefit (B)
  • 1.Raw materials
  • F:Key components such as the valve body, U-shaped water seal chamber, and valve core are all forged from SUS 304/SUS 316L food-grade stainless steel, meeting FDA, USP Class VI, and 3-A hygiene standards.
  • A:The material is pure, corrosion-resistant, and does not leach heavy metals. It has high structural strength and will not deform or contaminate the medium during long-term use.
  • B: Ensuring product hygiene and safety from the source, meeting the high-cleanliness requirements of industries such as pharmaceuticals, food, and beverages, easily passing GMP, HACCP, and other compliance audits, and mitigating compliance risks.
  • 2. Processing technology
  • F:The product is manufactured using a one-piece precision casting and fully welded molding process. The inner cavity and flow channels are treated with mechanical polishing and electrolytic polishing, resulting in a surface roughness Ra ≤ 0.4 μm.
  • A: Seamless construction with no cleaning dead spots; can withstand CIP online cleaning and SIP online sterilization.
  • B: Completely eliminates bacterial growth and media residue, reduces cleaning difficulty, and improves production cleanliness.
  • 3. Structural features
  • F: U-shaped water-sealed spring micro-opening structure, integrated pressure gauge for real-time monitoring, supports quick-connect Tri-Clamp connection, and includes a pressure setting device.
  • A: Compact size, flexible installation, precise pressure response, visual monitoring, and easy assembly/disassembly.
  • B: Adaptable to sanitary pipelines with limited space, provides real-time monitoring of operating conditions, offers rapid pressure relief protection, and ensures continuous production.
  • 4. Features of main components
  • F: The valve core is precision-ground from SUS 316L stainless steel to achieve a high-precision fit with the valve seat; the spring is made of corrosion-resistant stainless steel.
  • A:The valve core opens and closes smoothly, is wear-resistant and erosion-resistant, has good repeatability, and maintains stable accuracy over long-term operation.
  • B:Extends the overall lifespan of valves, reduces downtime due to malfunctions, and lowers maintenance costs and material waste.
  • 5. Features of the sealing ring
  • F:Uses food-grade EPDM, silicone, or PTFE one-piece molded sealing rings, compliant with FDA and USP Class VI certifications.
  • A: The sealing surfaces fit tightly, are resistant to high temperatures, acids and alkalis, and aging, and are not easily deformed or swollen.
  • B:Significantly extend the replacement cycle of sealing rings, reduce maintenance frequency and consumable costs, and avoid leakage and material waste caused by seal failure.
 
Stainless Steel Pressure Relief Spring Loaded safety valve
 
Maximum Flow Rate: 1-40 m2/h
Maximum Pressure: PN16 (16 bar)
Body Material: AISI 304 (1.4301), AISI 316L(1.4404)
Body Types: Sanitary U-type Water-seal SafetyValve with Pressure Gauge
Sealing Element: EPDM, PTFE, Silicone (foodgrade,FDA/USP Class VI compliant)
Actuation Type: Spring-loaded direct-actingwithoptional smart positioner)
Inlet & Outlet Sizes: 1"-4"(DN25-DN100)
 

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