Specification
What is Gas Ball Valve?
A gas valve is a mechanical device installed in gas pipelines to control the flow, pressure, or direction of flammable gases (like natural gas, propane/LPG, or manufactured gas).
Design Drawing
Feature
1.Ultra-Low Pressure Design
Nominal Pressure: 0.022 MPa (22 kPa / 3.2 psi) – Optimized for low-pressure gas/fluid systems.
2.Multi-Medium Compatibility
Suitable for: Natural gas, Manufactured gas, LPG (Liquefied Petroleum Gas), and Water.
3.Robust Temperature Tolerance
Operating Range: -10°C to 80°C – Reliable performance in varied climates.
4.Standardized Threading
Thread Standard: ISO 228 (G-series) – Ensures global compatibility and leak-proof sealing.
5.Compact Butterfly Valve Structure
Flange Dimensions:
Bolt Hole Centres: 65.5 mm
Flange Diameter: Φ40 mm
Bolt Hole Diameter: Φ31 mm – Compact design for space-constrained installations.
Applications
1.Residential Gas Systems:
Low-pressure branch lines for cooktops, water heaters, or space
heaters using natural gas/LPG.
2.Specialized Gas Distribution:
Manifolds for biogas, laboratory gas lines, or low-pressure
industrial gas circuits.
3.Water/Low-Pressure Fluid Control:
Cooling systems, irrigation, or low-head water supply networks.
Usage Precautions
1.Pressure Limit Compliance
NEVER exceed 0.022 MPa – Risk of valve failure/leakage. Verify system pressure matches
this rating.
2.Medium Compatibility Check
Confirm fluid/gas type aligns with specifications (e.g., no
corrosive/flammable liquids beyond water/LPG).
3.Temperature Constraints
Avoid environments below -10°C (risk of seal brittleness) or above 80°C (degradation risk).
4.Thread Integrity
Use ISO 228-compliant fittings only. Apply thread sealant (gas-rated for gas applications; PTFE for
water).
5.Installation Orientation
Install with flow direction aligned with valve arrow (if marked). Avoid inverted/pressure-reverse
mounting.
6.Leak Testing Mandatory
Pressure-test with soap solution or gas detector post-installation. Never use open flames.
7.Exclusion for High-Pressure Systems
Prohibited for:
Standard LPG cylinder valves (>0.8 MPa),
Natural gas mains (>5 kPa),
Compressed air systems (>1 bar).
Safety and Compliance Instructions for Selecting Gas Valves
- Certification: Ensure valve carries regional safety marks (e.g., CE, AGA, or GB
for target markets).
- Professional Installation: Gas systems require licensed technicians – DIY is illegal and hazardous.
- Material Warning: Verify body/seal materials (e.g., brass/EPDM) resist specific
media (e.g., sulfur in man-made gas).
Our advantages
1). Over 20 Years' Experience in production
2). Accept OEM Order
3). ISO9001 approved
4). We use All New raw material in products
5). Sufficient products with complete specifications for your
choice
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