Purple Valves
PRPLZ233

Flanged End Pressure Seal Gate Valve

A flanged-end pressure-seal gate valve engineered for high-pressure, high-temperature on/off isolation where bonnet integrity is critical.

Size1/2" to 24"PressureANSI Class 150 to 1500PortFull BoreBodyPressure-seal bonnet, flanged ends, OS&Y rising stem
Overview

The Flanged End Pressure Seal Gate Valve combines convenient flanged connections with a pressure-seal bonnet that grows tighter as internal pressure rises, making it well suited to high-pressure steam and hydrocarbon isolation duty. It is a true on/off valve relying on a flexible wedge and rising stem to provide drop-tight shut-off through a full-bore opening, and should not be used to regulate flow. Forged body materials and API-compliant trims allow the valve to handle demanding power-station and process conditions while the flanged ends simplify installation and removal.

Technical Detail

Specifications

Size Range
1/2" to 24"
Pressure Rating
ANSI Class 150 to 1500
Temperature Range
-46°C to 232°C (-50°F to 450°F)
End Connections
Raised face (RF), RTJ, threaded (NPT), socket weld, butt weld
Body Material
Carbon steel (WCB / A105N), low-temp (LCC / LF2), stainless (CF8M / 316 / 316L), Alloy 20, Hastelloy C
Ball / Disc / Wedge Material
13Cr / Stellite-faced flexible wedge (API trims 5, 8, 12, 16 available)
Seat Material
13Cr / Stellite-faced (API trims 5, 8, 12, 16)
Stem Material
13Cr stainless steel (410)
Port Type
Full Bore
Body Style
Pressure-seal bonnet, flanged ends, OS&Y rising stem
Operation
Handwheel, Gear, Electric, Pneumatic
Applications
High-pressure steam and hydrocarbon isolation in power generation, refining and petrochemical plants
Design Standard
API 600 / API 602 / API 603 / ASME B16.34
Testing Standard
API 598
Face to Face Standard
ASME B16.10
At a Glance

Key Features

  • OS&Y rising stem with visual position indication
  • Bolted bonnet construction for maintainability
  • Flexible wedge for reliable bidirectional sealing
  • Full-bore through-conduit flow for minimal pressure drop
  • Low-fugitive-emission packing and gasket sets available

Options

  • NACE MR0175 compliance
  • Bevel gear operator
  • Actuation-ready ISO mounting pads
  • Thermal relief (DTR) systems
  • Double-lead stem for faster run time

Standards & Certifications

  • API 600 / API 602 / API 603
  • ASME B16.34
  • NACE MR0175 (on request)
  • Low-fugitive-emission packing available
Contact

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