Marine pneumatic valve
Comprehensive information of marine pneumatic valves:
1. Core standards and types
GB/T 5744-2023: The current national standard for marine pneumatic quick closing valves is applicable to fuel and lubricating oil pipeline systems, with a nominal pressure extended to 4.0MPa, new water medium compatibility, and optimized anti jamming design for straight through structures.
Main types:
Quick closing valve: complete emergency cut-off within 0.5 seconds, equipped with compressed air drive and ESD (emergency stop) function.
Pressure reducing valve: such as Y42XF16 diaphragm type, used to regulate pipeline pressure (DN50 and other specifications) ^ ^.
2. Typical products and parameters
One standard ship pneumatic quick closing valve GB/T5744 cast steel quick closing valve quick closing valve DN20
180 day return and exchange policy, damaged package return and exchange policy, 7-day no reason return policy, 7-day price guarantee, free on-site return and exchange policy, lightning refund policy, fast review policy, late delivery compensation policy
Emergency cut-off of straight through diesel pipeline GBT5744-93 DN20 (AQ type) with flange cast steel pneumatic quick closing valve for first-class ships
Support 7-day no reason return and free on-site return and exchange
T standard ship valve, ship manual quick closing valve, fuel quick closing valve, ship pneumatic quick closing valve, ship pneumatic quick closing valve, manual L=150/4 holes/center distance 68
Fast review, late arrival compensation, 180 day replacement without repair, damaged package return and exchange, 7-day no reason return support, free on-site return and exchange, lightning refund
3. Application scenarios and technical requirements
Safety system: The rapid isolation of the main steam pipeline and fuel delivery requires certification from classification societies such as CCS/ABS.
Adaptation to harsh environments:
Salt spray corrosion resistance (such as bronze material with no corrosion after 720 hours of testing).
Explosion proof design (ExdI explosion-proof rating) and anti-static treatment.
4. Selection suggestions
Priority criteria: Select products that comply with GB/T 5744-2023 to ensure emergency cut-off response speed and sealing performance.
Special requirements:
High temperature media (such as steam) require the use of chromium molybdenum steel valve bodies.
LNG scenarios require low-temperature sealing materials (-162 ℃ working condition).
