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DFT – 8011 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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Basic-Check®
DN 50
2 in
2.00 in
BSA
4.00 in
90
16
4.9
0.10 psi
0.007 bar
2.6 in.water
66 mm.water
4.8 mmHg
±10%
7.00 lb
3.2 kg
0 psig
450 psig
0 barg
31.0 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.
416 SS
316 SS
CF8M
316 SS
316 SS
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.
Inconel® X-750 (-460 to 700°F)
316 SS (-460 to 450°F)
NPT
450 CWP
416 SS
B1.20.1
SP-25
- 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
- Inconel® 750 Spring
- Soft seat
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Product Literature
Cut Sheet (Basic-Check® Threaded In-Line Check Valves) (PDF)
Water Hammer (PDF)
Features (PDF)
Pressure Temperature Rating (PDF)
Applications (PDF)
Technical Information (PDF)
Additional Literature
NACE (PDF)
Zelon Technical Information (PDF)
Canadian Registration Numbers (PDF)
Check Valves: Key Considerations to Make When Designing Fluid or Gas Flow Systems (PDF)
