Flat gate valve with diversion hole

Flat gate valve with diversion hole

Flat gate valve with diversion hole

Type:Z43W/F,Z543W/F
Subtitle:Pressure-balanced Pipeline Gate Valve
The Flat Gate Valve with Diversion Hole is a high-performance solution designed for high-pressure, high-temperature applications in oil and gas pipelines, water distribution, and industrial processes. Featuring a flat gate design with a diversion hole, it ensures balanced pressure, smooth operation, and tight sealing, making it ideal for systems requiring pressure relief and efficient flow control.
Category:Flat Gate Valve

Product Overview

The Flat Gate Valve with Diversion Hole is a high-performance solution designed for high-pressure, high-temperature applications in oil and gas pipelines, water distribution, and industrial processes. Featuring a flat gate design with a diversion hole, it ensures balanced pressure, smooth operation, and tight sealing, making it ideal for systems requiring pressure relief and efficient flow control.

Applications

Oil & Gas: Pipeline isolation and wellhead control.
Water Distribution: Mainline isolation and flow control.
Industrial Processes: High-pressure fluid handling in chemical and petrochemical plants.
Power Generation: Steam and feedwater isolation in power plants.

Key Features

Flat Gate Design with Diversion Hole

  • Pressure Balancing: Diversion hole ensures balanced pressure across the gate for smooth operation.
  • Tight Sealing: ANSI Class VI leakage rates for critical shut-off applications.
  • Smooth Operation: Low operating torque due to pressure-balanced design.

Valve Construction

  • Body Materials: Carbon steel (WCB), 316L Stainless Steel (CF8M), Duplex (UNS S32205).
  • Gate Materials: 13% Cr stainless steel, Stellite 6, or nickel-plated carbon steel.
  • Seals: Graphite, PTFE, or metal-to-metal sealing (-40°C to 450°C).

Flow Characteristics

  • Full-Bore Design: Minimal flow restriction for maximum efficiency.
  • Flow Coefficient (Cv): 500–5000 (DN50–DN600).
  • Pressure Drop: Minimal due to streamlined flow path.

Operational Features

  • Low Torque Operation: Smooth opening and closing with minimal effort.
  • Bidirectional Sealing: Effective sealing in both flow directions.
  • Fire-Safe Design: API 607 certified for fire-safe applications.

Operational Advantages

Pressure Balancing: Diversion hole ensures smooth operation under high pressure.

Tight Sealing: ANSI Class VI leakage rates for critical applications.

Low Torque: Smooth operation with minimal effort.

Fire-Safe: API 607 certified for fire-safe applications.

Comparison with Flat Gate Valves without Diversion Hole

FeatureFlat Gate Valve with Diversion HoleFlat Gate Valve without Diversion Hole
Pressure BalancingYes (diversion hole)No
Operating TorqueLower due to pressure balancingSlightly higher
SealingBidirectional, metal-to-metalBidirectional, metal-to-metal
MaintenanceLow (fewer components)Low (fewer components)

Selection Guidelines

High Pressure: Opt for Class 1500 or 2500 for extreme conditions.

Corrosive Media: Choose 316L body with Stellite 6 trim.

High Cycling: Nickel-plated gate for 10,000+ cycles.

Fire-Safe Applications: Select API 607 certified valves.

Product Parameters

Nominal DiameterDN50–DN600 (2"–24")
Pressure RatingPN16–PN420 (Class 150–2500)
Temperature Range-40°C to 450°C (dependent on seals)
Flow Coefficient (Cv)500–5000
Leakage ClassANSI Class VI (standard)
Connection TypesFlanged (RF/RTJ), Welded (BW), Threaded (NPT/BSPT)
Body MaterialWCB, 316L SS (CF8M), Duplex (UNS S32205)
Gate Material13% Cr stainless steel, Stellite 6, Nickel-plated carbon steel
Seal MaterialsGraphite, PTFE, Metal-to-metal
Cycle Life10,000+ cycles (standard trim)
CertificationsAPI 6D, ISO 9001, API 607 (fire-safe)
Testing StandardsHydrostatic: API 598; Leakage: ISO 5208

Summarize

The Flat Gate Valve with Diversion Hole is a reliable and efficient solution for high-pressure, high-temperature applications requiring pressure balancing and tight sealing. Its robust design, low maintenance requirements, and fire-safe certification make it an ideal choice for oil and gas, water distribution, and industrial processes. With optional customization and a 5-year extended warranty, it ensures long-term operational efficiency and cost savings.

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