Find My Check Valve
The DFT® Model DLC® is a corrosion resistant, dependable, versatile and economical spring assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the DLC® provides tight shut-off and protects other equipment in the system from water hammer. Its stainless steel construction insures a long service life.
Inconel® X-750 spring is standard

Standard Features:
  • 1/2" to 3" Line size
  • ASME Class 150 and 300
  • Standard Body Material A351 CF8M
  • Stainless Steel Construction
  • ANSI B16.10 Face-to-Face Dimensions
  • Raised Face Flanged Ends
  • Inconel® X-750 Spring
  • Electron Beam Welded Body
  • Spring-Assisted Silent Closing, Non-Slam
  • Horizontal or Vertical Installation
Unit of Measure

OLD NPT #

OLD PART #

9401

Inventory

Inventory

QUOTE

Specifications

Series

DLC®

Size

0.75 inDN 20

ASME CLASS

150

Dimension A

4.62 in117 mm

Dimension B

3.88 in99 mm

Weight

4.5 lb2 kg

Cracking Pressure CP

0.24 psig0.017 bar

Temperature Rating

-460 to 700 ºF-273.33 to 371.11 ºC
Pressure Rating1
275 psig19 barg

Working Steam Pressure

110 psig

Body Seal

EB WELD

ENDS

Flanged (RF)

Cv

13

Materials of Construction

Body Material

316 Stainless Steel

Body

A351 CF8M

Trim

A351 CF8M/316 SS

Seat

A351 CF8M

Spring

Inconel® X-750

Disc

316 SS

Codes and Standards

ANSI

B16.10 B16.34 B16.5

MSS

SP-126 SP-25 SP-6 SP-61
Other Standards2 A351GR CF8M

Features

N/A

  • ANSI B16.10 Face-to-Face dimensions
  • Spring-assisted silent closing, non-slam
  • 1/2" to 3" Line size
  • ASME 150 and 300
  • Stainless Steel Construction
  • Raised Face Flanged ends
  • Inconel® X-750 spring
  • Electron beam welded body
  • Meets ASME B16.34 - 2004
  • Horizontal or vertical installation
  • Body guided disc
  • Tight shut-off - lapped disc & seat
  • Simplified construction - 4 parts
  • Versatile

Options

N/A

  • 316 SS Springs
  • Body Materials
    - Alloy 20
    - Hastelloy® C
    - NACE
  • Soft-Seat (Teflon Encapsulated Viton only)

Application

N/A Autoclaves Boiler Feed & Discharge Chemical Lines Compressor Discharge Condensate Lines Cookers Cooling Towers Crude & Refined Product Lines Cryogenics Digester Evaporators Fly Ash System Generator Inlet & Discharge Hydraulic Lines Metering Pumps Mine Dewatering Nitrogen Purge Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines Water Treatment

  • 1 ASME B16.34
  • 2 Contact DFT for NACE.