DFT: Check Valves:

DLC® Flanged Check Valve

The DFT® Model DLC® is a corrosion resistant, dependable, versatile and economical spring assisted, in-line check valve for a wide range of applications.
For liquid, gas or steam.
The DLC® provides tight shut-off and protects other equipment in the system from water hammer.
Stainless steel construction insures a long service life.
Inconel® X-750 spring is standard.

Documentation:
Product Specifications
(139KB PDF)

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

Materials of Construction:
Body	A351 CF8M
Seat	A351 CF8M
Disc	316 SS
Spring	Inconel® X-750

Pressure Temperature Rating (PSIG)
A351 CF8M			Alloy 20 (CN7M)			Hastelloy® C (CW-12MW)
Temp. (°F)	ASME 150	ASME 300	Temp. (°F)	ASME 150	ASME 300	ASME 150	ASME 300
-460	275	720	-325	230	600	230	600
100	275	720	100	230	600	230	600
200	235	620	200	200	520	210	550
300	215	560	300	180	465	200	520
400	195	515	400	160	420	190	490
500	170	480	500	150	390	170	465
600	140	450	600	140	360	140	440
700	110	435	700			110	420

DFT WLC Cast Iron Wafer Threaded In-Line Check Valve

DLC Check Valve

ANSI B16.10 Face-to-Face dim
Spring-assist non-slam silent closing
1/2” to 3” Line size
ASME Class 150 and 300
Standard body material:
- A351 CF8M
Optional body materials:
- Alloy 20
- Hastelloy®
Horizontal or vertical installation
Stainless steel construction
Raised face flanged ends
Inconel® X-750 spring
Electron beam welded body


DLC FLANGED CHECK VALVES
Part #	Class	Size	Dimension A	Dimension B	Cv	Cracking Pressure CP
9400	150	DN 15 0.5 in	4.25 in 108 mm	3.50 in 89 mm	7	0.29 psig 0.020 bar
9401	150	DN 20 0.75 in	4.62 in 117 mm	3.88 in 99 mm	13	0.24 psig 0.017 bar
9402	150	DN 25 1 in	5.00 in 127 mm	4.25 in 108 mm	22	0.36 psig 0.025 bar
9404	150	DN 40 1.5 in	6.50 in 165 mm	5.00 in 127 mm	54	0.24 psig 0.017 bar
9405	150	DN 50 2 in	8.00 in 203 mm	6.00 in 152 mm	93	0.42 psig 0.029 bar
9407	150	DN 80 3 in	9.50 in 241 mm	7.50 in 191 mm	180	0.20 psig 0.014 bar
9410	300	DN 15 0.5 in	6.00 in 152 mm	3.75 in 95 mm	7	0.29 psig 0.020 bar
9411	300	DN 20 0.75 in	7.00 in 178 mm	4.62 in 117 mm	13	0.24 psig 0.017 bar
9412	300	DN 25 1 in	8.50 in 216 mm	4.88 in 124 mm	22	0.36 psig 0.025 bar
9414	300	DN 40 1.5 in	9.50 in 241 mm	6.12 in 155 mm	54	0.24 psig 0.017 ba
9415	300	DN 50 2 in	10.50 in 267 mm	6.50 in 165 mm	93	0.23 psig 0.016 bar
9417	300	DN 80 3 in	12.50 in 318 mm	8.25 in 210 mm	180	0.20 psig 0.014 bar

WLC Wafer Check Valve Specifications
Class		150 RF	300 RF
1/2"	Dim A	4.25	6.00
	Dim B	3.50	3.75
	Weight	3.2	4.5
	Cv	7	7
	CP	0.29	0.29
3/4"	Dim A	4.62	7.00
	Dim B	3.88	4.62
	Weight	4.5	7.2
	Cv	13	13
	CP	0.24	0.24
1"	Dim A	5.00	8.50
	Dim B	4.25	4.88
	Weight	6.0	9.9
	Cv	22	22
	CP	0.36	0.36
1-1/2"	Dim A	6.50	9.50
	Dim B	5.00	6.12
	Weight	11.7	18.5
	Cv	54	54
	CP	0.24	0.24
2"	Dim A	8.00	10.50
	Dim B	6.00	6.50
	Weight	19.1	24.3
	Cv	93	93
	CP	0.42	0.23
3"	Dim A	9.50	12.50
	Dim B	7.50	8.25
	Weight	39.2	50.5
	Cv	180	180
	CP	0.20	0.20