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Prod. # 8031, 3/4" 316 SS BSE Style Basic-Check® Threaded In-Line Check Valve

 	 Prod. # 8031, 3/4" 316 SS BSE Style Basic-Check® Threaded In-Line Check Valve
Prod. # 8031, 3/4' 316 SS BSE Style Basic-Check® Threaded In-Line Check Valve
DFT Inc.

The DFT® Basic-Check valve is a versatile all-purpose, spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of liquids and gases at various pressure/temperature combinations. The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc. to form a complete check valve unit ideally suited for a broad range of pipeline applications or incorporated into machinery for OEM applications. The metal-to-metal sealing area of the Basic-Check valve’s disc and seat is precision lapped, providing very tight shut-off of both gas and liquid. If bubble-tight shut-off is required, resilient soft seats are available.




Specifications  · Materials of Construction  · Springs  · Valve Selection Specifications  · Codes and Standards  · Features  · Options

Specifications

Series

Basic-Check®

Size

DN 20
0.75 in

Line Size Inlet (FNPT) A

0.75 in

Style

BSE

Outside Thread (MNPT) B

1.50 in

Cv

13.2

Friction Loss (Feet of Pipe)

6

Friction Loss (Meter of Pipe)

1.8

Valve Cracking Pressure1

0.44 psi
0.030 bar
12.1 in.water
307 mm.water
22.6 mmHg

Valve Cracking Pressure Tolerance

±10%

Approx. Net Weight Each

0.88 lb
0.4 kg

Cold Working Pressure2

0 psig
2000 psig
0 barg
138 barg
1 Cracking pressure for vertical flow will be slightly different: upward flow, slightly higher; downward flow, slightly less.
Not recommended for use on discharge of reciprocating compressors.
2 Contingent on service ratings of matching pipe and fittings.


Materials of Construction

Seat

303 SS

Disc

316 SS

Guard

17-4 SS

Spring

Inconel®

Retaining Ring

316 SS


Springs

Springs

Inconel® X-750 (-460 to 700°F)
316 SS (-460 to 450°F)


Valve Selection Specifications

ENDS

NPT

ASME

2000 CWP

Materials

303 SS


Codes and Standards

ANSI

B1.20.1

MSS

SP-25


Features
  • 1/4" to 2 1/2" Line size
  • 450 to 6000 CWP
  • Threaded ends
  • Stainless Steel Construction
  • Spring-assisted silent closing
  • Horizontal or vertical installation
  • Tight shut-off - lapped disc & seat
  • Easy Maintenance
  • Versatile


Options
  • Inconel® 750 Spring
  • Soft seat



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