Product Overview
The LUZHEN LPG Cylinder Dual Valve is a high-performance valve designed specifically for LPG cylinders with a capacity not exceeding 48 kg, supporting both vapour and liquid service. The valve features an integrated design combining a pressure relief device and an excess flow protection device, providing comprehensive safety protection for LPG cylinders.

Key Features
1. Excess Flow Protection for Safety
This valve is equipped with an excess flow valve on the liquid side. In the event of a hose rupture or line breakage, the excess flow valve automatically closes when the flow rate reaches 9 ℓ/min, effectively preventing excessive product loss from the cylinder and avoiding safety incidents caused by leakage.
2. Precise Valve Control
- Inlet Connection: 3/4" - 14 NGT
- Pressure Relief Valve Set Pressure: 26 bar
- Pressure Relief Valve Flow Capacity: 12.75 m³/min (air)
3. High-Quality Sealing and Assembly Process
- Strict inspection and removal of sharp edges, burrs, and foreign matter left from part machining before assembly to ensure seals are not damaged during installation
- Parts must not be bumped, scratched, or corroded during assembly, ensuring product appearance and performance
- Anti-tamper treatment on the valve body after assembly to prevent disassembly by unauthorized personnel
4. Rigorous Pressure Testing Standards
- Under 1.2 times the nominal working pressure and at 0.05 MPa, the valve is held for 1 minute in both open and closed positions, ensuring no leakage
- Pressure relief set pressure: 2.6 MPa
- Relief pressure range: 2.8 ~ 3.4 MPa
- Reseating pressure: 2.08 MPa
5. Applicable Product Standards
Designed and manufactured in accordance with GB/T15382-2021 "General Technical Requirements for Gas Cylinder Valves". The product has a nominal working pressure of 2.5 MPa and an operating temperature range of -40°C to 60°C, suitable for various extreme climatic conditions.

Product Advantages
1.Multi-Scenario Application
This product is widely used in LPG cylinder storage, transportation, distribution, and end-use scenarios. Whether in household kitchens, catering establishments, or industrial applications, it provides stable and reliable gas control solutions.
2.International Standard Compatibility
The product design complies with international standard requirements and can adapt to usage needs in different countries and regions. We support customization of various inlet and outlet connection types according to buyer requirements.
3.Continuous Quality Commitment
LUZHEN has nearly 20 years of experience in the gas cylinder ancillary equipment industry and has established a strict quality management system. Each dual valve undergoes 100% gas tightness testing before leaving the factory. After testing, water stains are thoroughly dried to keep the valve body dry, ensuring the product is delivered to customers in optimal condition.
4.Thoughtful After-Sales Service
- Detailed product instruction manuals and safety operation manuals provided
- Technical support team ready to respond to customer needs at any time
- Product certification documents and conformity declarations available upon request
5.Customization Services
LUZHEN supports comprehensive customization services for customers:
- Customization of different inlet/outlet connection specifications according to customer requirements
- Adjustments to meet different national technical standards
- Brand identification customization services
Contact Us
You are welcome to request detailed technical specifications, product quotations, or sample testing. LUZHEN will provide professional product configuration recommendations and technical support based on your specific application needs.
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