IFC Series DC
Cast Iron Dual Disc Check Valves
Design Features
· Available in wafer body style. Suitable for installation between FF or RF flanges.
· Valve sizes 6” and larger are complete with a valve lifting lug tap.
· Teflon thrust washers are standard.
· Available with resilient (Buna-N or EPDM) seats.
· Seat design lifts then swings discs to minimize seat wear.
· Body meets ASME B16.1, space API 594.
· Testing is performed in accordance with API 598.
· All valves are equipped with independent springs that optimize the closing rates of
each valve plate, while minimizing spring stress.
Parts List and Standard Materials Upper Pressure Limits (Non-Shock)
Part Description Specifications Valve Size M.A.W.P psig (Bars)
1 Body A126-B Cast Iron 2”-12” (50 - 300mm) 200 (13.79)
2 Discs Aluminum Bronze B148 14”- 48” (350 - 1200mm) 150 (10.34)
C954 or 316 SS A351-CF8M
3 Seat Buna-N or EPDM
4 Hinge Pin 316 SS
5 Spring 316 SS Lower Temperature Limits
6 Thrust Washers Teflon / Phenolic Body/Seat Material Lower Limit °F (°C)
7 Stop Pin 316 SS A126-B -20° (-28.9°)
8 Hinge Pin Retainer 1
A126-B Buna-N / EPDM -13° (-25°)
9 Stop Pin Retainer 1 A126-B
Notes: 1. Materials of equivalent strength may be substituted at manufacturer’s option.
2. See page 6 for part identification.
Pressure Temperature Chart (In Accordance with ASME B16.1, A126-B)
5 Tel. 905-335-8777 Fax. 905-335-0977 Toll Free Tel. 1-866-872-0072 Toll Free Fax. 1-866-872-0073
IFC Series DC
Cast Iron Dual Disc Check Valves
5 ØA C ØD
4
7
8 E
9 B
Dimensional Data (Class 125) Stud Selection
Size 1
ØA B C 2
ØD E Qty. Dia. Length Weight
in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) lb. (kg)
2 (50) 4.13 (105) 2.13 (54) 2.00 (51) 2.38 (60) 0.13 (3) 4 0.63 (16) 5.50 (140) 4 (1.8)
2.5 (65) 4.88 (124) 2.13 (54) 2.50 (64) 2.88 (73) 0.50 (13) 4 0.63 (16) 6.00 (152) 5.5 (2.5)
3 (80) 5.38 (137) 2.25 (57) 3.00 (76) 3.50 (89) 0.63 (16) 4 0.63 (16) 6.25 (159) 7.5 (3.4)
4 (100) 6.88 (175) 2.50 (64) 4.00 (102) 4.50 (114) 1.00 (25) 8 0.63 (16) 6.25 (159) 13.5 (6.1)
5 (125) 7.75 (197) 2.75 (70) 5.00 (127) 5.50 (140) 1.25 (32) 8 0.75 (19) 7 (184) 17.5 (7.9)
6 (150) 8.75 (222) 3.00 (76) 6.00 (152) 6.63 (168) 1.63 (41) 8 0.75 (19) 8.00 (203) 26.5 (12.0)
8 (200) 11.00 (279) 3.75 (95) 8.00 (203) 8.63 (219) 2.38 (60) 8 0.75 (19) 9.50 (241) 50 (22.7)
10 (250) 13.38 (340) 4.25 (108) 10.00 (254) 10.75 (273) 3.00 (76) 12 0.88 (22) 10.50 (267) 70 (31.8)
12 (300) 16.13 (410) 5.63 (143) 12.00 (305) 12.75 (324) 3.88 (99) 12 0.88 (22) 12.25 (311) 110 (49.9)
14 (350) 17.75 (451) 7.25 (184) 12.50 (318) 14.00 (356) 4.00 (102) 12 1.00 (25) 13.00 (330) 170 (77.1)
16 (400) 20.25 (514) 7.50 (191) 15.00 (381) 16.00 (406) 5.25 (133) 16 1.00 (25) 13.50 (343) 225 (102.1)
18 (450) 21.61 (549) 8.00 (203) 17.00 (432) 18.00 (457) 6.00 (152) 16 1.13 (29) 14.50 (368) 280 (127.0)
20 (500) 23.86 (606) 8.38 (213) 19.00 (483) 20.00 (508) 6.88 (175) 20 1.13 (29) 15.25 (387) 390 (176.9)
24 (600) 28.25 (718) 8.75 (222) 22.75 (578) 24.00 (610) 8.25 (210) 20 1.25 (32) 16.25 (413) 590 (267.6)
Notes: 1. Dimensions are in accordance with API 594 except face to face dimensions of 2.5” thru 12” valves.
2. Minimum bore diameter of companion flanges.
3. Larger sizes available upon request.
General: 1. For pressure loss information please see page 14.
2. For ordering information please see page 18.
3. Dimensions are subject to change. Contact factory for certified prints when required.
Tel. 905-335-8777 Fax. 905-335-0977 Toll Free Tel. 1-866-872-0072 Toll Free Fax. 1-866-872-0073 6
