Boiler Safety Valves - Auxiliary Machinery and Engine Room
Boiler safety valves are automatic pressure-relief devices fitted to marine steam and auxiliary boilers. They open at a calibrated set pressure to discharge steam and protect the boiler, piping, personnel, and machinery from overpressure.
ProShipWorks provides end-to-end support to source and supply Boiler Safety Valves for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Boiler Safety Valves |
|---|---|
| Product Category | Auxiliary Machinery and Engine Room |
| Product Reference | 330 |
| Brands / Manufacturers | LESER, Crosby, Consolidated |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Spring-loaded automatic overpressure protection |
| 2. Calibrated opening at the specified boiler set pressure |
| 3. Rapid lift and adequate steam discharge capacity |
| 4. Positive reseating after pressure returns to a safe level |
| 5. Heat-resistant body, trim, spring, and seating materials |
Applications of Boiler Safety Valves
| Application |
|---|
| 1. Marine auxiliary and exhaust-gas boilers |
| 2. Steam drums and superheaters |
| 3. Engine-room steam systems and pressure vessels |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| Type 441 | LESER |
| HCI ISOFLEX | Crosby |
| 1700 Maxiflow | Consolidated |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| Type 441 | Valve design | Direct spring-loaded full-lift safety valve | — |
| Type 441 | Connection type | Flanged | — |
| HCI ISOFLEX | Service | Steam boiler pressure relief | — |
| HCI ISOFLEX | Valve design | Direct spring-loaded safety valve | — |
| 1700 Maxiflow | Service | High-pressure steam boiler service | — |
| 1700 Maxiflow | Valve design | Spring-loaded safety valve | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | Common requirements include ASME BPVC Section I for power boilers, ASME BPVC Section VIII where applicable, EN ISO 4126-1 for safety valves, and relevant SOLAS boiler safety provisions. The required standard depends on the vessel flag, boiler design, and class rules. |
|---|---|
| Class Approval | Acceptance may be required from DNV, ABS, Lloyd's Register, Bureau Veritas, ClassNK, RINA, or another vessel classification society. Approval is model-, material-, pressure-, capacity-, and installation-specific and should be verified from current certificates. |
Installation, Maintenance & Safety Information
| Installation Notes | Mount directly on the designated boiler connection in the upright orientation specified by the manufacturer. Do not install an isolating valve between the boiler and safety valve. Size the discharge line to avoid excessive backpressure, support it independently, and provide safe drainage. |
|---|---|
| Maintenance Tips | Inspect for leakage, corrosion, blocked drains, damaged seals, and discharge-pipe strain. Test at class and flag-state intervals, verify set pressure and blowdown, and overhaul using approved parts. Calibration and sealing should be performed by authorized personnel. |
| Safety Notes | Never gag, isolate, or adjust a safety valve while the boiler is in normal service. Keep personnel clear of steam outlets and hot surfaces. Depressurize, cool, drain, and lock out the boiler before removal or internal maintenance. |
Request a Quote for Boiler Safety Valves
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