Dual Plate Check Valves

High-performance compact dual plate check valves designed for reliable non-return service in surface industrial applications, with robust metal seating and fire-safe features.

The ATV SPA Dual Plate Check Valves are engineered non-return valves that prevent reverse flow in process systems while offering a compact, lightweight design suitable for both horizontal and vertical installations. Featuring a dual-plate configuration with hard-faced metal seats and a self-retainer hinge without external screwed plugs, these valves provide non-slamming operation, fire-safe construction, and easy installation. They are available in forged or cast body options and can be customized for specific size and pressure requirements according to project needs.
Typical applications include surface production systems, FPSO platforms, LNG and pumping systems, where dependable backflow prevention and minimal pressure loss are critical.

Main Features

  • Forged or Cast Body
  • Hard Faced Metal Seated
  • Non Slam Type
  • Intrinsically Fire Safe
  • Self-retainer hinge, without external screwed plugs
  • Twin Plate, flat design

Options

  • Customized size and design pressure according to Project requirements
  • Available Design Validation: API 6A PR2F, ISO 15848-1, API 6D
  • Client specific Type Approval or Design Validation test
  • PED
  • ATEX
  • Painting according to Customer Specification
  • Fire Safe Design (API 607, API 6FA, ISO 10497)

Benefit

  • Compact design
  • Easy installation
  • Horizontal & Vertical installation

Technical Data

Main Design Standard

API 6D, API 6A, ISO 14313, ISO 10423

Applications
Platforms, FPSO / Turret & Mooring System, LNG, Pumping System
Size, Pressure Range

API 6D:
2”- 60”
Class: # 150-2500

API 6A:
1 13/16” – 21 ¼”
From RWP Form 13.8 MPa (2.000PSI) to RWP 103.4 MPa (15.000PSI)

Temperature Range
-101°C ÷ 400°C
Quality Controls
API 6D:
QSL 2, QSL3/3G, QSL4/4G
API 6A:
PSL-1, PSL-2, PSL-3, PSL-4
Materials

Main Components:

  • Carbon steel
  • Low temperature carbon steel
  • Stainless austenitic steel and super-austenitic steel
  • Stainless duplex and super-duplex
  • Nickel superalloys (such as Monel, Inconel 625, Hastelloy)

NACE material available upon request Norsok material available upon request

End Connections
Double Flanged, Lug, Wafer, Hub Ends
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