Plug Valve

Design Features

• Type: Lubricated plug valve

• Operation: Manual handwheel operated

• Connection: Flanged ends (as shown)

• Body Design: Straight pattern with a cylindrical plug inside

• Tight Shutoff: Designed for bubble-tight shutoff

• Usage: Typically used for on/off services, suitable for handling various types of fluids including gas, oil, and water

• Seal: Uses sealant injection to ensure a tight seal between plug and body

• Maintenance: Top-entry design enables easy maintenance and plug removal without removing the valve from the pipeline

Cast Iron Plug Valve

Material of Construction

• Body: Cast Iron (ASTM A126 Class B or equivalent)

• Plug: Cast Iron or Ductile Iron, often with a corrosion-resistant coating

• Bonnet: Cast Iron

• Stem: Stainless Steel or Carbon Steel with corrosion-resistant coating

• Gland Packing/Sealant: PTFE or compatible lubricant sealant for tight sealing

• Handwheel: Cast Iron or Ductile Iron

Size Range Available

• Typical Range: 1/2" to 12" (DN 15 to DN 300)

• Larger sizes can be provided upon request for specific industrial requirements.

Pressure Rating

• Standard Rating: Class 125 or Class 150 (ANSI B16.1 for flanged cast iron fittings)

• Max Working Pressure: Approximately 200 PSI at ambient temperature

• Always verify actual pressure-temperature ratings with manufacturer datasheet due to variations in design.

Stainless Steel Plug Valve

Design Features

• Type: Lubricated plug valve

• Operation: Handwheel-operated with gear-assisted drive for ease of use

• Port: Typically full port or standard port (depending on model)

• Connection Type: Flanged ends (ANSI B16.5 standard likely)

• Body Design: Robust two-piece body with bolted bonnet

• Flow Control: Quarter-turn plug design for on/off and limited throttling

• Top Entry: Facilitates in-line maintenance and inspection without removal from the pipeline

• Sealant Injection: Available for leak-tight sealing under pressure

Material of Construction

• Body made from stainless steel 316 (ASTM A351 CF8M).

• Plug constructed from stainless steel 316, usually coated with PTFE or graphite.

• Bonnet made from stainless steel 316 for corrosion resistance.

• Stem is stainless steel 316, offering strength and durability.

• Sealing components use PTFE, graphite, or similar chemical-resistant sealants.

• Handwheel typically made from ductile iron or stainless steel.

• Fasteners and bolting components are stainless steel for corrosion protection.

Size Range Available

• Standard size range from ½ inch to 12 inches (DN15 to DN300).

• Larger sizes can be provided upon request for specific industrial requirements

Pressure Rating

• Available in ANSI pressure classes: Class 150, Class 300, and Class 600.

• Class 150: Rated up to ~285 PSI at 100°F (19.6 bar at 38°C).

• Class 300: Rated up to ~740 PSI at 100°F (51 bar at 38°C).

• Class 600: Rated up to ~1480 PSI at 100°F (102 bar at 38°C).

• Temperature range: typically from -20°C to +400°C depending on seal material.