FAQs of Butterfly Gas Ball Valve

1. What are the butterfly gas ball valves’ main materials?

Plumberstar butterfly gas ball valves have main bodies made of brass (H59/H62) and stainless steel (304/316). Their seals are made of nitrile rubber (NBR) and fluororubber (FKM). These seals resist gas corrosion. The valve core is made of copper alloy or stainless steel. All materials have passed the gas contact safety test and meet the safety standards of gas valves, such as GB 15558.1 (national standard), EN 331 (Europe), and ANSI Z21.15 (USA). No harmful substances are precipitated.

2. Are raw materials traceable for gas ball valve production?

• Brass ingots need spectroscopic analysis to confirm composition purity.
• Stainless steel bars need tensile strength and corrosion resistance tests.
• EPDM seals need gas medium resistance tests.

3. What is the sealing performance of the butterfly gas ball valve?

Double seal structure-hard seal (metal to metal)+ soft seal (seal and valve core fit), gas leakage ≤0.01cm³/min (in accordance with ISO 5208 Class VI seal standard) Before each valve leaves the factory, air tightness test (1.5 times rated pressure for 30 minutes) is performed to ensure no gas leakage, and safety is guaranteed from both structure and detection.

4. What types of gas are butterfly gas ball valves suitable for?

It works for natural gas (NG), liquefied petroleum gas (LPG), artificial gas (CG), methane, and other common gases. It can also be used for non-corrosive, low viscosity gas or liquid (like air, inert gas, light oil). You need to specify the medium type in advance. This helps match the sealing material. For example, a corrosive medium needs fluororubber sealing.

5. How to select the butterfly gas ball valve size according to the gas flow?

The core of selection is to ensure that the valve diameter ≥ the gas pipeline diameter, and the valve flow coefficient (Cv value) meets the pipeline flow demand. General reference: DN15 is suitable for flow ≤5 m³/h, DN25 ≤ 15 m³/h, and DN50 ≤ 50 m³/h. If it is an industrial high-flow scenario, pipeline pressure and flow parameters can be provided. Plumberstar engineers assist in making accurate selections to avoid waste caused by insufficient flow or excessive valve usage.

6. What customization requirements are supported for butterfly gas ball valves?

Customization supports special alloy materials with anti-corrosion coatings, as well as large diameter (DN100 and above) specifications, thread and flange mixed connections, emergency shutdown, remote control, flow metering functions, surface treatments, and customer logo engraving on the exterior.

7. What is the warranty period for the butterfly gas ball valve?

Standard warranty period is 24 months (longer than the industry’s 12-month standard), starting from the customer acceptance date. It covers material defects (such as cracking, rust, and non-artificial damage), the valve manufacturing process issues (including loose sealing, opening and closing failure), and aging seals (with free replacement). Free new product replacement or maintenance is provided within the warranty period.

8. What is the packing method for the export gas ball valve?

Plumberstar packaging ensures product safety during transportation. It also meets customs clearance and storage requirements of different countries.
Here are the specific packaging methods:
1. Individual Inner Packaging: Anti-Scratch, Anti-Rust, Anti-Collision
Every gas butterfly valve is packaged separately:
Wrap the valve body surface with antistatic PE film. It isolates moisture and dust. This prevents rust and scratches on stainless steel and brass parts.
Add custom plastic protective sleeves to vulnerable parts. Things like valve stems and flanges are covered. This avoids collision deformation during transportation.
Put the single valve into a thickened corrugated box. The box is printed with the product model and specifications. Fill the box with buffer foam or pearl cotton. It fixes the product in place and prevents shaking and wear.
2. FCL Collective Packaging: Strengthen Logistics Pressure Resistance
Pack individually wrapped valves in batches:
Use 5-layer standard export corrugated boxes. Mark them clearly with Plumberstar brand logo, product name, quantity, gross/net weight, destination, and transportation warning signs (moisture proof, keep upright, fragile).
Stack the valves in the box layer by layer. Put cardboard partitions between layers. Fill the top and bottom with buffer bubble film. This ensures uniform stress on the box. It can resist extrusion and jolting during long-distance sea and land transportation.
For large-diameter gas butterfly valves, use extra plywood wooden boxes for packaging. Fumigate the wooden boxes and stamp the IPPC mark. This meets the quarantine requirements of Europe, America, Australia, and other countries. It prevents pests from being carried in wood packaging.
3. Customized Packaging Services: Meet Special Market Needs
We offer customized packaging solutions for different export market requirements:
For the EU market, packaging materials comply with the ROHS environmental standards. No fillers containing harmful substances like lead and mercury are used.
For high-temperature and high-humidity areas like the Middle East and Southeast Asia, put desiccant packs in the packaging boxes. This enhances the moisture-proof effect.
For customers with brand customization needs, print their LOGO and promotional text on the packaging boxes. This boosts brand recognition.

9. How to detect whether there is a gas leakage from the gas ball valve?

Detection method: 1. Soapy water detection: smear soapy water on the valve interface and the valve core. If bubbles are generated, it indicates leakage;2 Professional instrument detection: use a gas leakage detector (such as a combustible gas detector) to detect, and the leakage concentration shall be lower than 10% of the lower explosion limit. Regular inspection cycle: once every 6 months for home scenarios and once every 3 months for commercial/industrial scenarios to ensure safety.

10. How does the performance consistency of the gas ball valve support large projects?

Unified Performance Parameters: Ensure Efficient Large-Scale Project Construction

Large-scale engineering projects demand huge quantities of gas butterfly valves. Think urban gas pipeline network renovation, industrial park gas supply system construction — these projects often need thousands, even tens of thousands of valves. They have strict, unified requirements for valve opening and closing torque, sealing performance, and pressure rating.
Plumberstar gas butterfly valves are made on standardized production lines. The machining tolerance of core components — valve ball, valve seat, valve stem — is controlled within ±0.02mm. Every valve passes a pressure holding test (1.5 times the working pressure) and an air-tightness test before delivery. This ensures batch-to-batch opening and closing torque deviation is ≤5%, and sealing leakage rate is 0.
This performance consistency eliminates installation compatibility issues caused by valve parameter differences during construction. You don’t need to adjust pipe connection sizes or installation tools for different batches of valves. It greatly boosts on-site construction efficiency and cuts down project duration.

Standardized Operation & Maintenance: Boost Large-Scale Project Management Efficiency

The later-stage operation and maintenance of large-scale projects involves regular valve maintenance and replacement. Performance consistency slashes operation and maintenance costs and difficulty significantly:

• Universal spare parts: Unified performance parameters mean standby valves can directly replace faulty ones. No need for separate customization. This reduces the pressure of spare parts inventory.
• Unified maintenance processes: Maintenance staff don’t need to adjust standards for different batches of valves. They can use standardized testing tools and processes. This improves maintenance efficiency.
• Convenient fault tracing: If an individual valve malfunctions, you can quickly check the cause via the product traceability code. Find out if it’s a production batch issue or an on-site condition problem. Avoid confusion caused by performance differences that lead to faulty results. Shorten fault handling time.

For large-scale projects, Plumberstar also provides full-batch performance test reports. These reports seamlessly align with project acceptance criteria, enabling customers to successfully complete project delivery.