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Home > DFT Inc. > Check Valves > Threaded Check Valves > Basic Check > 416 SS BSA

Prod. # 8009, 1 1/4" 316 SS BSA Style Basic-Check® Threaded In-Line Check Valve

  	 Prod. # 8009, 1 1/4" 316 SS BSA Style Basic-Check® Threaded In-Line Check Valve
Prod. # 8009, 1 1/4' 316 SS BSA 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  · Soft Seat Materials  · Springs  · Valve Selection Specifications  · Codes and Standards  · Features  · Options

Specifications

Series

Basic-Check®

Size

DN 32
1.25 in

Line Size Inlet (FNPT) A

1.25 in

Style

BSA

Outside Thread (MNPT) B

2.50 in

Cv

36

Friction Loss (Feet of Pipe)

12.5

Friction Loss (Meter of Pipe)

3.8

Valve Cracking Pressure1

0.16 psi
0.011 bar
4.5 in.water
114 mm.water
8.4 mmHg

Valve Cracking Pressure Tolerance

±10%

Approx. Net Weight Each

2.25 lb
1 kg

Cold Working Pressure2

0 psig
850 psig
0 barg
58.6 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

850 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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