Purple Valves
PRPLZ190

Forged Stainless Steel Check Valve

A forged stainless steel check valve providing automatic, corrosion-resistant backflow prevention for aggressive media.

Size1/2" to 4"PressureClass 150 to 2500PortFull portBodyForged check (stainless)
Overview

Forged from stainless steel, this check valve withstands corrosive and high-purity media while delivering dependable automatic non-return performance. The internal disc lifts under forward flow and reseats on reversal to block backflow without manual intervention. Stainless construction, fine machined seats and compact threaded or socket-weld ends make it well suited to chemical processing, food and pharmaceutical, and offshore systems where both corrosion resistance and clean, reliable sealing are required.

Technical Detail

Specifications

Size Range
1/2" to 4"
Pressure Rating
Class 150 to 2500
Temperature Range
-46°C to 232°C (-50°F to 450°F)
End Connections
Threaded (BSPT/NPT), Socket Weld, Flanged
Body Material
Forged stainless steel (F304, F316, F316L and duplex grades)
Ball / Disc / Wedge Material
Lift / piston disc
Seat Material
Stainless metal seat
Port Type
Full port
Body Style
Forged check (stainless)
Operation
Automatic (non-return)
Applications
Chemical processing, food and pharmaceutical, offshore and high-purity systems
Design Standard
API 602, BS 1868
Testing Standard
API 598
Face to Face Standard
ASME B16.10
At a Glance

Key Features

  • Forged stainless steel for corrosion resistance
  • Automatic disc non-return action
  • Threaded, socket-weld or flanged ends
  • Clean, fine-machined sealing seats
  • Suited to aggressive and high-purity media

Options

  • NACE compliant trim
  • Special materials on request
  • Soft or metal seating

Standards & Certifications

  • API 598
  • NACE compliant (optional)
  • API 602
Contact

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