thermal safety valve
thermal safety valve
thermal safety valve
thermal safety valve
thermal safety valve

Stainless Steel Spring Loaded Thermal Vacuum Consolidated Relief Safety Valve

JN-SFTV23-1002-6
Size: DN15–DN100.
Grade: SS304/SS316.
Standard: DIN, ANSI, ISO.
Working pressure: up to 40 bar.
Test pressure: 1.5× rated pressure.
Temperature Range: -20°C to 200°C.
PTFE seals: high chemical resistance.
Viton seals: excellent oil and heat resistance for hydraulic systems.
Quantity:
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Stainless Steel Spring Loaded Thermal Vacuum Consolidated Relief Safety Valve

Stainless Steel Spring Loaded thermal safety valve is a multi-functional protection valvedesigned to control both pressure buildup and vacuum conditions in closed pipeline systems. It is commonly installed on the top of storage tanks, thermal pipelines, or pressure vessels,where pressure changes and vacuum formation may occur during heating, cooling, or liquid transfer. At this position, the valve automaticallyreleases excess pressure or allows air intake to eliminate vacuum, protecting pipelines and equipment from deformation or damage. Typical types include spring-loaded pressure relief valves,thermal expansion relief valves, vacuum relief valves, and combined pressure-vacuum safety valves used in heating, storage, and process piping systems.

Stainless Steel Spring Loaded Thermal Vacuum Consolidated Relief Safety Valve differs from ordinary safety valves because it is designed to manageboth positive pressure and vacuum conditions within the same system. Traditional safety valves mainly release excess pressure, while this valve can automatically relieve overpressure and simultaneously protect against vacuum formation caused by cooling or fluid discharge. Compared with similar products on the market, our valve adoptsprecision spring-loaded mechanisms and high-quality stainless steel construction, ensuring stable response and strong corrosion resistance. In addition, our design focuses on accurate pressure control, reliable sealing performance, and long service life, making it suitable for demanding industrial and thermal pipeline applications.

 

Accessories

 Component & Material Table
  • Valve Body: Stainless steel 304 / 316 / 316L (for corrosion resistance)
  • Bonnet/Cap: Stainless steel 304 / 316
  • Valve Disc / Poppet: SS316 or hardened stainless steel
  • Spring: Stainless steel 304 / 17-7PH alloy steel
  • Seat: SS316 with precision-machined sealing surface
  • Sealing Elements: PTFE / Viton (FKM) / EPDM
  • Adjustment Screw: Stainless steel with anti-loosening lock nut
Product Parameter Details
  • Material：Body and internal components in SS304 / SS316L; spring in stainless steel; seals in PTFE, EPDM, or Viton; all materials suitable for hygienic processes.
  • Structural Form：Spring-loaded pressure relief with integrated vacuum breaker; optional combined pressure/vacuum structure; dead-leg-free sanitary design; optional insulated or jacketed body.
  • Pressure Rating：Low to medium pressure range (e.g., 0.1–10 bar adjustable); vacuum protection sensitivity calibrated per tank requirement; factory pressure tested.
  • Function：Automatic overpressure release and vacuum compensation; surge protection; tank deformation prevention; sterile process safety assurance.
  • Grade Level：Sanitary grade for food, beverage, dairy, and pharmaceutical; optional industrial chemical grade.
  • Specification Standards：DIN, SMS, ISO, 3A, ASME BPE clamp or flange standards for global hygienic pipeline compatibility.
  • Certification / Registration：Optional FDA-compliant seals, 3A certification, material traceability, pressure testing and safety compliance documentation.
  • Installation Direction：Typically installed vertically on tank tops; horizontal installation optional depending on design; drainage-friendly configuration.
  • Customization：Adjustable pressure settings, customized sizes, special seal materials, connection types, and sample-based OEM production available.
Stainless Steel Spring Loaded Thermal Vacuum Consolidated Relief Safety Valve
 
Feature (F)、Advantage (A)、Benefit (B)
  • Raw Material:
  • F:High-integrity 304/316L stainless steel valve body with reinforced bonnet structure; temperature-resistant alloy spring; PTFE/FKM composite sealing elements
  • A: Superior resistance to thermal expansion, corrosion & pressure fatigue; stable mechanical strength under cyclic heating conditions
  • B: Ideal for thermal systems, heat exchangers & pressurized vessels; ensures consistent pressure protection in high-temperature environments
  • Processing Technology:
  • F:Precision CNC-machined pressure chamber; integral cast or forged body construction; calibrated spring assembly; anti-oxidation surface treatment
  • A: Accurate set-pressure control; enhanced structural rigidity; reduced thermal deformation; reliable long-term sealing
  • B: Maintains stable safety performance during continuous heating cycles; lowers maintenance frequency; improves system durability
  • Structure Feature:
  • F: Consolidated spring-loaded safety structure; thermal constant-pressure compensation design; flange/threaded/welded connection optional; compact vertical configuration
  • A:Automatic overpressure release with rapid reseating; stable pressure balance during temperature fluctuation; strong vibration resistance
  • B:Prevents equipment damage caused by thermal expansion; stabilizes pipeline pressure; improves operational safety and efficiency
  • Core Accessory Feature:
  • F:High-precision pressure disc & guide sleeve; thermally compensated stainless compression spring; reinforced seat alignment mechanism
  • A:Smooth opening at preset pressure; consistent resealing without chatter; accurate pressure repeatability
  • B: Enhances protection reliability; minimizes pressure surge impact; extends valve service life under high-temperature operation
  • Seal Ring Feature:
  • F:High-temperature PTFE/FKM sealing system; anti-aging & wear-resistant design; steam-resistant elastomer components
  • A:Excellent tight shut-off performance; stable elasticity under repeated heating & cooling cycles; wide temperature adaptability
  • B: Suitable for -20℃~220℃ working conditions; prevents medium leakage under thermal stress; reduces seal failure and replacement costs
 
Stainless Steel Spring Loaded Thermal Vacuum Consolidated Relief Safety Valve
 
Connection Type: Sanitary clamp, flange (DIN / ANSI / SMS / ISO), threaded, or welded connections for tank and pipeline installation.
Manufacturing Process: CNC precision machining, sanitary welding, laser cutting, precision turning, and forming processes to ensure dimensional accuracy and smooth sealing surfaces.
Surface Treatment: Mechanical polishing, mirror polishing (Ra≤0.8μm or Ra≤0.4μm optional), electrolytic polishing, passivation, or matte industrial finish.
Raw Material Processing: Forged stainless steel body, precision casting components, rolled plate forming, or solid bar machining depending on pressure requirements.
Operation Method: Automatic spring-loaded operation standard; optional pneumatic-assisted or manual test lifting mechanism available.
Seal Material Options: PTFE, EPDM, Viton (FKM), Silicone, and FDA-compliant hygienic sealing materials.
Sealing Structure: Center soft sealing design standard; optional metal hard sealing or dual-seal structure for enhanced pressure and vacuum protection performance.
 
 
 

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