DFT – 8023 SS-BSSH7 Model Check Valve In-Line Threaded Check Valve

Description

 


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
·
Soft Seat Materials
·
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

 


BSSH7

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
6000 psig
0 barg
414 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

 


316 SS

Disc

 


17-7 SS

Guard

 


CF8M

Spring

 


316 SS

Retaining Ring

 


316 SS

 


Soft Seat Materials

Soft Seat Materials1

 


Buna-N -49 (-70 to 250°F)
EPDM -57 (-75 to 300°F)
TFE®-Viton -98 (-40 to 400°F)
Viton® -51 (-40 to 400°F)
Zelon® -54 (37 to 400°F)

1 Soft seats are not available for the Style BSE check Valve. Buna-N and Viton are not suitable for steam service.

 


Springs

Springs

 


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

 


Valve Selection Specifications

ENDS

 


NPT

ASME

 


6000 CWP

Materials

 


316 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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DFT – 8023 SS-BSSH7 Model Check Valve In-Line Threaded Check Valve

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