Prod. # 8002, 3/8″ 316 SS BSS Style Basic-Check® Threaded In-Line 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.

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

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

Specifications

Series

Basic-Check®

Size

DN 10
0.38 in

Line Size Inlet (FNPT) A

0.38 in

Style

BSS

Outside Thread (MNPT) B

1.00 in

Cv

5.8

Friction Loss (Feet of Pipe)

Friction Loss (Meter of Pipe)

2.1

Valve Cracking Pressure¹

0.60 psi
0.041 bar
16.7 in.water
424 mm.water
31.1 mmHg

Valve Cracking Pressure Tolerance

±10%

Approx. Net Weight Each

0.38 lb
0.2 kg

Cold Working Pressure²

0 psig
2500 psig
0 barg
172 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		303 SS

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		2500 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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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)

Request Information

Non-Slam Check Valve RFQ