DFT – 8010 SS-BSA 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.

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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 40
1.5 in

Line Size Inlet (FNPT) A

 


1.50 in

Style

 


BSA

Outside Thread (MNPT) B

 


3.00 in

Cv

 


57.4

Friction Loss (Feet of Pipe)

 


11

Friction Loss (Meter of Pipe)

 


3.4

Valve Cracking Pressure1

 


0.15 psi
0.010 bar
4.2 in.water
107 mm.water
7.8 mmHg

Valve Cracking Pressure Tolerance

 


±10%

Approx. Net Weight Each

 


3.75 lb
1.7 kg

Cold Working Pressure2

 


0 psig
700 psig
0 barg
48.3 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

 


416 SS

Disc

 


316 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

 


700 CWP

Materials

 


416 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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Product Literature

 

Additional Literature
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Cut Sheet (Basic-Check® Threaded In-Line Check Valves) (PDF)

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Water Hammer (PDF)

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Features (PDF)

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Pressure Temperature Rating (PDF)

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Applications (PDF)

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Technical Information (PDF)

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NACE (PDF)

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Zelon Technical Information (PDF)

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Canadian Registration Numbers (PDF)

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Check Valves: Key Considerations to Make When Designing Fluid or Gas Flow Systems (PDF)

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Non-Slam Check Valve RFQ

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