Grove G4N Flat Gate Valve, ASTM A515 70, DN300, PN63, RTJ

Cameron Grove G4n Flat Gate Valve

Valve description: Slab gate valve, carbon steel, Double Block & Bleed, Full bore, piggable, Through conduit

Body material: ASTM A515 Grade 70
Gate: ASTM A515 Grade 70 ENP
Nominal diameter: DN300 (12 Inch)
Nominal class: PN63 (Class 400 LB)
End connection: RTJ
Face to face: ASME B16.10
Test and inspection: API 598
Mode of operation: bare shaft

The G4N gate valve, part of the GROVE valve portfolio, is constructed from welded steel plates with forged rolled ends. For larger sizes and higher pressure classes, the valve body is reinforced with multiple welded ribs. The pressure-containing plates undergo sandblasting and ultrasonic inspection. Both the gate and the seats are floating components. An initial seal at very low differential pressure is achieved by a series of springs behind the seats that push against the gate.

TECHNICAL FEATURES
 

• Stem seals with self-energized nonrolling lip seals
• No side load and friction drag on the stem—low operating thrust
• Stem protector and gate position indicator
• Through-conduit, self-cleaning, floating slab gate
• Floating seat always in contact with the gate
• Metal-to-metal primary seal; protected O-ring secondary seal
• Block-and-bleed and double block-and-bleed design
• Top-entry body for inline maintenance
• Built-in sealant injection system for emergency sealing
• Graphite packing fire-safe sealing
• Metal-to-metal with tungsten carbide coating (TCC)