Purple Valves
PRPLZ002

Mud Check Valve

An API 6A mud check valve that permits one-way flow of drilling mud and slurry while preventing backflow in high-pressure service.

Size1/4" to 2"Pressure2000 / 3000 / 5000 PSI rated working pressurePortFull boreBodyCheck valve (one-way / non-return)
Overview

Designed for the abrasive, solids-laden conditions of drilling-mud circulation, this API 6A mud check valve allows fluid to pass in a single direction and seals automatically against reverse flow. Its rugged, wear-resistant construction stands up to the erosive slurry and high pressures encountered in wellhead and mud-handling systems. Manufactured to API Spec 6A, it provides dependable non-return protection for pumps and lines in demanding oil and gas drilling and production service.

Technical Detail

Specifications

Size Range
1/4" to 2"
Pressure Rating
2000 / 3000 / 5000 PSI rated working pressure
Temperature Range
-46C to 232C (-50F to 450F); API 6A temperature classification available
End Connections
Flanged API 6B / 6BX; threaded NPT (API 6A end and outlet connections)
Body Material
A216 WCB / A351 CF8M (AISI 4130 / 4140 alloy steel for sour service available)
Ball / Disc / Wedge Material
Hardened check disc / poppet
Seat Material
Hardfaced / tungsten carbide overlay
Stem Material
A182 F6a / A182 F316 (alloy stem, hardfaced)
Port Type
Full bore
Body Style
Check valve (one-way / non-return)
Operation
Automatic (flow-actuated)
Applications
Drilling mud circulation, slurry lines, pump discharge protection, oil & gas drilling service
Design Standard
API 6A
Testing Standard
API 6A (API 598 hydrostatic test procedures)
At a Glance

Key Features

  • Automatic non-return protection against backflow
  • Erosion-resistant internals for abrasive mud and slurry
  • API Spec 6A construction for high-pressure duty
  • Rugged body for severe drilling environments

Options

  • Hardfaced or tungsten carbide trim
  • Various end connections to suit mud lines

Standards & Certifications

  • API 6A
  • API Spec 6A monogram available
  • PSL 1-3 / PR1-PR2 on request
Contact

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