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Manual Ball Valves & Plug Valves

plug valve manual ball ball
Lubricated plug valves, also known as lubricated plugcocks, provide a reliable manual shutoff option for gas trains, combustion systems, and industrial applications.

Why it matters: These valves offer a rugged alternative to standard ball valves, trusted in demanding environments for decades.

  • The guide explains their functionality and the differences between plug and ball valves.
Key selection criteria:

  • Consider full-port vs. standard-port configurations and threaded vs. flanged connections.
  • Understand the role of operating wrenches or handles.
Bottom line: Whether replacing or specifying new installations, this guide simplifies the selection process for Homestead lubricated plug valves, ensuring you choose the right fit for your needs.

Manual Gas Shutoff Valves

What Is a Lubricated Plug Valve?

When selecting a manual gas shutoff valve, many customers are familiar with ball valves but may be less familiar with lubricated plug valves, sometimes called lubricated plug cocks or plugcocks.

These valves are commonly used in combustion, industrial, utility, and gas train applications where rugged construction and reliable shutoff performance are critical.

Homestead lubricated plug valve

How a Lubricated Plug Valve Works

A lubricated plug valve uses a tapered metal plug that rotates inside the valve body to control flow. Valve lubricant is injected between the plug and body, helping the valve seal properly while also reducing operating torque and wear.

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Reliable Shutoff

Designed for dependable manual shutoff in gas and industrial applications.

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Quarter-Turn Operation

The valve opens and closes with a simple manual quarter-turn operation.

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Serviceable Design

Lubrication helps improve sealing performance and extend service life.

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Combustion Applications

Often used in gas trains, boiler rooms, burner systems, and utility gas piping.

Lubricated Plug Valve vs. Ball Valve

Both ball valves and lubricated plug valves can be used as manual gas shutoff valves, but they are built differently and are often selected for different reasons.

Lubricated Plug Valve Ball Valve
Uses a tapered metal plug design Uses a spherical ball design
Requires valve lubricant Typically does not require lubrication
Common in industrial gas and combustion applications Common in general manual gas shutoff applications
Often selected for rugged serviceability Often selected for simple shutoff needs

Full-Port vs. Standard-Port Plug Valves

One of the most important questions when selecting a lubricated plug valve is whether the application requires a full-port or standard-port design.

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Full-Port Valves

A full-port valve provides an opening equal to or greater than the inside diameter of the connected pipe. This helps maximize flow and reduce restriction.

  • Maximum flow capacity
  • Lower pressure drop
  • Common Homestead Series: 601 threaded, 602 flanged
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Standard-Port Valves

A standard-port valve uses a smaller internal opening than the connected pipe size and may be used when full flow is not required.

  • Reduced internal opening
  • Useful where full flow is not needed
  • Common Homestead Series: 611 threaded, 612 flanged

Selection Tip: If a customer does not specify full-port or standard-port, it is worth confirming before ordering. The correct choice depends on the application and flow requirements.

Threaded vs. Flanged Connections

Homestead lubricated plug valves are available in multiple connection styles depending on the piping system and application.

NPT

Threaded Connections

Threaded plug valves are commonly used in smaller piping systems, retrofit work, and applications where NPT connections are preferred.

FL

Flanged Connections

Flanged plug valves are often used on larger pipe sizes, industrial installations, and higher-capacity gas systems.

Don’t Forget the Wrench or Handle

Unlike many manual ball valves, lubricated plug valves may be supplied without the operating wrench or handle. The correct wrench is typically selected based on the valve series, valve size, and port configuration.

When ordering a Homestead lubricated plug valve, it is important to verify whether a wrench or handle is required and confirm the correct accessory for the valve being quoted.

Common Applications

  • Industrial gas trains
  • Burner systems
  • Boiler rooms
  • Utility gas piping
  • Manufacturing facilities
  • Process heating equipment
  • Commercial combustion systems

Why Choose Homestead Lubricated Plug Valves?

  • Rugged industrial construction
  • Reliable gas shutoff performance
  • Multiple connection options
  • Full-port and standard-port configurations
  • Broad size range availability
  • Long service life when properly maintained

Need Help Selecting a Lubricated Plug Valve?

Whether you know the exact Homestead part number or need help determining the correct size, connection type, port configuration, or wrench accessory, the Stromquist team can help point you in the right direction.

Shop Plug Valves Contact Our Team

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