Flanged Natural Gas Ball Valves
A flanged natural gas ball valve is a flanged, three piece body ball valve used for main shut-off and sectioning on natural gas, LPG and other gas lines. An anti-static stem design is provided as standard to prevent static charge build-up in the gas line.
Products are built with a ductile iron body and a solid stainless ball from DN15 to DN300. On large sizes the ball is supported from below and a reduced bore option is available.
Main Applications
- Building entry and main shut-off points in city gas distribution
- Gas reception and pressure reducing stations in industrial plants
- Sectioning on boiler and burner gas lines
- LPG tank outlet and distribution lines
- In-plant gas header lines
- Service shut-off valves upstream of gas appliances
Technical Data
| Connection | Flanged |
|---|---|
| Bore range | DN15 – DN300 |
| Pressure class | PN25 / PN40 |
| Operating pressure class | MOP20 |
| Medium | Natural gas, LPG and other gases |
| Temperature | −10 °C … +200 °C (manufacturer data) |
| Body material | Ductile iron (cast steel models separately) |
| Ball | Solid stainless steel; bottom supported from DN250 |
| Body construction | Three piece |
| Bore | Full bore or reduced bore |
| Stem | Anti-static |
| Standards | TS EN 331, TS 9809 |
Material Options
| Part | PN25 / PN40 · ductile iron | PN40 · cast steel |
|---|---|---|
| Body | Ductile iron | Cast steel (grade depending on model) |
| Ball | Solid stainless steel | Depending on model |
| Stem | Anti-static stem (material depending on model) | Depending on model |
| Seat | Depending on model | Depending on model |
| Conformity | TS EN 331, TS 9809 | Depending on model |
The ductile iron column is taken from the manufacturer product page for natural gas ball valves. Stem and seat materials and the values for cast steel models are confirmed from the product datasheet.
Advantages
Designed for Gas Lines
- An anti-static stem is provided as standard.
- Manufactured within the scope of TS EN 331 and TS 9809.
Wide Size Range
- Selected from DN15 to DN300 within one series.
- On large sizes the bottom supported ball balances operating torque.
Removable Centre Body
- The three piece design eases maintenance.
- The flanged ends remain in the line.
Operating Flexibility
- The top flange design suits actuator mounting.
- Can be used together with emergency shut-off systems.
Construction and Design Features
- The body consists of two flanged end pieces and a centre body.
- The ball is machined from solid stainless steel.
- From DN250 upwards the ball is supported by a bottom bearing.
- The stem has an anti-static design that conducts static charge to the body.
- The top flange is designed for mounting a lever or an actuator.
Send us the gas type, DN, PN and operating pressure; we will define a compliant valve and connection parts together.
How to Choose?
- Define gas type and pressureCheck that the operating pressure of the natural gas or LPG line stays within the MOP20 limit.
- Select the flange classChoose the valve matching the PN25 or PN40 drilling of the mating flange.
- Decide on the boreChoose full bore where pressure loss is critical, reduced bore where cost and weight come first.
- Request the documentsAsk for the TS EN 331 conformity certificate with the quotation for project approval.
- Plan the operationIf emergency shut-off or remote operation is required, evaluate an actuated solution together.
Complementary Products
Why ORFA?
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Details →Our Flanged Natural Gas Ball Valves
ORFA supplies flanged natural gas ball valves in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
Flanged Natural Gas Ball Valve
Flanged natural gas ball valve: full bore, 3-piece, ductile iron body, stainless steel filled sphere, DN15–DN300, PN16 / PN25 / PN40 (MOP20), TS 9809 / TS EN 331. Request a quote.
Details →Reducing Flanged Natural Gas Ball Valve
Reducing flanged natural gas ball valve: 3-piece, ductile iron body, stainless steel ball, DN32–DN300, PN40 / PN25. Economy solution for gas lines.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.