Purple Valves
PRPLZ244

Investment Casting Screwed Gate Valve

An investment-cast screwed gate valve giving precise, smooth-finished on/off isolation for small-bore threaded piping.

Size1/4" to 4"PressureANSI Class 150 to 1500PortFull BoreBodyInvestment-cast body, screwed bonnet, rising stem
Overview

The Investment Casting Screwed Gate Valve is produced by the lost-wax investment-casting process, yielding precise dimensions and a smooth internal finish that reduces turbulence and improves sealing. Fitted with screwed (threaded) ends, it isolates small-bore lines with a rising stem and wedge sealing a full-bore opening, and is intended only for fully-open or fully-closed operation. The investment-cast body, typically in stainless or carbon steel, suits utility, instrument and light-process service where a clean, accurate casting is preferred over a forging.

Technical Detail

Specifications

Size Range
1/4" to 4"
Pressure Rating
ANSI Class 150 to 1500
Temperature Range
-46°C to 232°C (-50°F to 450°F)
End Connections
Screwed / threaded (NPT, BSP)
Body Material
Investment-cast stainless steel (CF8 / CF8M) or carbon steel (WCB)
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
Investment-cast body, screwed bonnet, rising stem
Operation
Handwheel, Gear, Electric, Pneumatic
Applications
On/off isolation of small-bore threaded utility, instrument and light-process lines
Design Standard
ASME B16.34 / BS 5154 / API 602
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

Get in Touch

Have a question or ready to order? Reach out and our team will get back to you with pricing and availability.

Send us a message.

"*" indicates required fields

This field is for validation purposes and should be left unchanged.
Supporting Document (Optional)
Max. file size: 25 MB.