--- type: "product_component" title: "Metal Tank Pressure Relief Valve Assembly" industry: "Manufacture of Tanks, Reservoirs and Containers of Metal" verification_protocol: urn: "URN:CNFX:ME:METAL_TANK_PRESSURE_RELIEF_VALVE_ASSEMBLY" data_integrity_hash: "76904d77dc135119bd186d650f4ea2eb" source_authority: "https://cnfx.com" strict_mode: true source_identity: provider: "CNFX Industrial Knowledge Graph" index_version: "2026.Q1-Universal" authority_id: "URN:CNFX:ME:METAL_TANK_PRESSURE_RELIEF_VALVE_ASSEMBLY" data_source_uri: "https://cnfx.com/llms/industry/manufacture-tanks-reservoirs-containers-metal/product/metal-tank-pressure-relief-valve-assembly.md" official_resource_url: "https://cnfx.com/industry/manufacture-tanks-reservoirs-containers-metal/product/metal-tank-pressure-relief-valve-assembly" is_verified_logic: true attributes: primary_spec: status: "config-dependent" typical_range: "0.5-25 bar" unit: "bar" secondary_spec: status: "config-dependent" typical_range: "0.5-25 bar" unit: "m³/h" engineering_limits: max_safe_operating_point: value: 28 unit: "bar" consequence: "Spring fatigue due to cyclic loading exceeding 10^6 cycles at 90% of yield strength (σ_y=1200 MPa for 316 stainless steel)" fmea_matrix_quantitative: - node_1: trigger: "Corrosion-induced pitting (chloride concentration >25 ppm)" severity: 8 occurrence: 3 detection: 4 mitigation_protocol: "Duplex stainless steel (UNS S31803) construction with 3.5 mm minimum thickness" - node_2: trigger: "Thermal expansion differential (ΔT>80°C between body and spring)" severity: 8 occurrence: 3 detection: 4 mitigation_protocol: "Inconel 718 spring with coefficient matched to 316L body (α=16.0 μm/m·°C)" bom_nodes: valve-body: type: "part" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/valve-body.md" link_type: "product" link_target_urn: "URN:CNFX:ME:VALVE_BODY" urn: "URN:CNFX:ME:VALVE_BODY" interface_type: "physical-logic-coupled" is_standalone: true spring-mechanism: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/spring-mechanism.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:SPRING_MECHANISM" urn: "URN:CNFX:ME:UNIT:SPRING_MECHANISM" interface_type: "physical-logic-coupled" is_migrated_part: true discseat-assembly: type: "part" llms_uri: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/discseat-assembly.md" link_type: "product" link_target_urn: "URN:CNFX:ME:DISCSEAT_ASSEMBLY" urn: "URN:CNFX:ME:DISCSEAT_ASSEMBLY" interface_type: "physical-logic-coupled" is_standalone: true bonnet: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/bonnet.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:BONNET" urn: "URN:CNFX:ME:UNIT:BONNET" interface_type: "physical-logic-coupled" is_migrated_part: true test-lever: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/test-lever.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:TEST_LEVER" urn: "URN:CNFX:ME:UNIT:TEST_LEVER" interface_type: "physical-logic-coupled" is_migrated_part: true manufacturing_compliance: url: "https://cnfx.com/llms/industry/manufacture-tanks-reservoirs-containers-metal/product/metal-tank-pressure-relief-valve-assembly.md" on_chain_sovereignty: contract_standard: "ERC-721-Industrial" metadata_hash: "13c098317ef7d3867c1de98f362bee6eec828f404cf895b2cc779a87ac3275e3" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Metal Tank Pressure Relief Valve Assembly" - "stainless steel 316 tank pressure relief valve" - "metal pressure vessel safety valve assembly" - "ASTM A105 carbon steel relief valve" - "PTFE seal pressure relief valve for tanks" - "industrial tank pressure relief valve with test lever" - "Metal Tank Pressure Relief Valve Assembly in " - "China Metal Tank Pressure Relief Valve Assembly manufacturer" - "Metal Tank Pressure Relief Valve Assembly supplier China" - "Metal Tank Pressure Relief Valve Assembly primary_spec" - "Metal Tank Pressure Relief Valve Assembly secondary_spec" version: "3.3.5-EXTREME-SOVEREIGN-WEB3" --- # Industrial Specification: Metal Tank Pressure Relief Valve Assembly ## 1. Technical Definition Safety valve assembly for metal tanks and pressure vessels. ## 2. Engineering Reasoning & Causal Matrix > **Operational Intelligence**: Designed for **0.5-25 bar**. Failure boundary: **28 bar (400 psi) at 150°C**, Mechanism: **Spring fatigue due to cyclic loading exceeding 10^6 cycles at 90% of yield strength (σ_y=1200 MPa for 316 stainless steel)**. ### 2.1 Analytical Physics Model Governed by the **Thin-Wall Pressure Vessel Stress Analysis**: > **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$ > **Engineering Impact**: Determines the hoop stress boundary to prevent rupture. | Symbol | Variable Definition | Localized Reference | | :--- | :--- | :--- | | P | Internal Pressure | Engineering Constant | | D | Diameter | Engineering Constant | | t | Wall Thickness | Engineering Constant | ### 2.2 FMEA (Failure Mode & Effects Analysis) | Event Trigger | Severity | Failure Mode | Mitigation Strategy | | :--- | :--- | :--- | :--- | | Corrosion-induced pitting (chloride concentration >25 ppm) | 8 | Valve seat leakage at 0.1 bar below set pressure | Duplex stainless steel (UNS S31803) construction with 3.5 mm minimum thickness | | Thermal expansion differential (ΔT>80°C between body and spring) | 8 | Spring binding causing 15% overpressure before actuation | Inconel 718 spring with coefficient matched to 316L body (α=16.0 μm/m·°C) | ## 3. Key Technical Parameters | Parameter | Value | Unit | Status | | :--- | :--- | :--- | :--- | | primary_spec | Config-dependent | bar | Verified | | secondary_spec | Config-dependent | m³/h | Verified | ## 4. System BOM & Knowledge Routing ### Core Components (Recursive Links) - [Valve Body](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/valve-body.md) `(Standalone System)` - [Disc/Seat Assembly](https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/discseat-assembly.md) `(Standalone System)` ### Industrial DNA Context (De-duplicated) **Complementary Dependencies**: **Pressure Testing Station**, **Torque Calibration System**, **Leak Detection Equipment** **Downstream Applications**: Industrial Pressure Vessels, Chemical Storage Tanks, Compressed Gas Cylinders ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What materials are used in this pressure relief valve assembly? **A**: This assembly uses Stainless Steel 316 for corrosion resistance, Carbon Steel ASTM A105 for structural components, and PTFE seals for reliable sealing at high temperatures. ### Q: What are the key specifications for this pressure relief valve? **A**: Key specifications include set pressure (bar), relief capacity (m³/h), operating temperature (°C), connection size (DN), blowdown pressure (%), and back pressure (bar) ratings. ### Q: How does the test lever function on this safety valve? **A**: The test lever allows for manual operation to verify the valve's functionality without requiring system pressure, ensuring regular safety checks can be performed easily. ## 6. Manufacturing Compliance --- ### 🛠️ Engineering Resource Access 🔗 **[Full Specification: Metal Tank Pressure Relief Valve Assembly](https://cnfx.com/industry/manufacture-tanks-reservoirs-containers-metal/product/metal-tank-pressure-relief-valve-assembly)** ### 🌐 Knowledge Graph Topology > **Node Status**: Verified Engineering Spec > **Connectivity**: Linked to **5** standalone system nodes > **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph > **Reference ID**: METAL_TANK_PRESSURE_RELIEF_VALVE_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: fdfa14a2