Prod. # 8005, 1″ 316 SS BSS Style Basic-Check® Threaded In-Line Check Valve

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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.

Light spring available: Cracking Pressure = 0.24 PSI (6.5 inches of water)


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


Specifications

Series


Basic-Check®

Size


DN 25
1 in

Line Size Inlet (FNPT) A


1.00 in

Style


BSS

Outside Thread (MNPT) B


2.00 in

Cv


23.1

Friction Loss (Feet of Pipe)


7

Friction Loss (Meter of Pipe)


2.1

Valve Cracking Pressure1


0.36 psi
0.025 bar
10.1 in.water
257 mm.water
18.8 mmHg

Valve Cracking Pressure Tolerance


±10%

Approx. Net Weight Each


1.25 lb
0.6 kg

Cold Working Pressure2


0 psig
1500 psig
0 barg
103 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


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


1500 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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Prod. # 8005, 1″ 316 SS BSS Style Basic-Check® Threaded In-Line Check Valve

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