DLC® Flanged Check Valves

The DFT DLC® model is a corrosion resistant, dependable, versatile and economical spring assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the DLC® provides tight shut-off and protects other equipment in the system from water hammer. Its 316 stainless steel construction insures a long service life.

Specifications:

• ANSI B16.10 Face-to-Face dimensions
• Spring-assisted silent closing
• 1/2” to 3” Line size
• ANSI 150 and 300
• 316 Stainless Steel Construction
• Raised Face Flanged ends
• Inconel X-750 spring
• Electron beam welded body
• Meets B16.34 - 1988
• Horizontal or vertical installation
• Body guided disc
• Tight shut-off - lapped disc & seat
• Simplified construction - 3 parts
• Versatile
  
  

  STANDARD MATERIALS
  Component		Carbon Steel Body	Stainless Steel Body
  Body		A216 Grade WCB	A351 CF8M
  Disc/stem assembly		A351 CF8M/A479 316	A351 CF8M/A479 316
  Seat (1)		A351 CF8M	A351 CF8M
  Spring (2)		A313 316	A313 316
  Bushing		A479 316	A479 316
  Bolting (3)		A193-B7 (Stud) & A194-2H (Nut)
  Gasketing (3)	Cl.150 & 300	CFG (4)
  	Cl.600+	316 Spiral wound with Flexible Graphite Filler

*1” & 1-1/2” WLC; Cl 150 to 1500 - 316 SS trim except 17-7 disk in Cl 900+.
Some valves contain body seals (“O” ring or gasket). Consult DFT for material selection.

Notes:

1. Soft seats are available for bubble-tight shutoff.
2. Inconel® X-750 spring is available.
3. Excalibur only. Contact DFT for stainless steel or other bolting materials.
4. Corrugated flexible graphite material.