Description
Subsea Check Valves – Technical Data
• Subsea Check Valves Working pressure up to 20,000 psig (1379 bar)
• Maximum external pressure: 6,000 psig (414 bar)
• Cracking pressure: 14 to 26 psig (0.966 to 1.794 bar)
• NBR O-ring for operation from -10 to 250˚F (-23 to 121˚C); other O-ring materials available
• High tensile 316 stainless steel for valve body
• Available to NACE MR0175
• Provides unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure, valve shuts offs (Not for use as relief valve)
• Soft seat seal ring style or metal-to-metal seat poppet style available
• Maximum water depth: 13,800 ft. (4,200 m)
Technical Data
![]() | Connection | Orifice size in. (mm) | Cv | A in. (mm) | B in. (mm) | C-HEX in. (mm) | HEX in. (mm) | ![]() |
---|---|---|---|---|---|---|---|---|
10SCSS-FNS12 | FNS12 | 0.52 (13.21) | 4.70 | 6.11 (155.19) | - | - | 1.75 (44.45) | 10,000 (690) |
10SCSS-FNS16 | FNS16 | 0.69 (17.52) | 7.40 | 7.32 (185.93) | - | - | 1.88 (47.75) | 10,000 (690) |
10SCOSS-FNS12 | FNS12 | 0.52 (13.21) | 4.70 | 6.11 (155.19) | - | - | 1.75 (44.45) | 10,000 (690) |
10SCOSS-FNS16 | FNS16 | 0.69 (17.53) | 7.40 | 7.32 (185.93) | - | - | 1.88 (47.75) | 10,000 (690) |
15SCSS-DFF4 | DFF4 | 0.188 (4.78) | 0.63 | 3.43 (87.12) | 0.52 (13.21) | 0.63 (16.00) | 0.81 (10.57) | 15,000 (1034) |
15SCSS-DFF6 | DFF6 | 0.250 (6.35) | 1.70 | 3.82 (97.03) | 0.53 (13.46) | 0.75 (19.05) | 1.00 (25.40) | 15,000 (1034) |
15SCSS-DFF8 | DFF8 | 0.375 (9.53) | 3.40 | 4.55 (115.57) | 0.60 (15.24) | 0.93 (23.62) | 1.38 (35.05) | 15,000 (1034) |
15SCOSS-DFF4 | DFF4 | 0.188 (4.78) | 0.63 | 3.43 (87.12) | 0.53 (13.46) | 0.63 (16.00) | 0.81 (20.57) | 15,000 (1034) |
15SCOSS-DFF6 | DFF6 | 0.250 (6.35) | 1.70 | 3.82 (97.03) | 0.53 (13.46) | 0.75 (19.05) | 1.00 (25.40) | 15,000 (1034) |
15SCOSS-DFF8 | DFF8 | 0.375 (9.53) | 3.40 | 4.55 (115.57) | 0.60 (15.24) | 0.93 (23.62) | 1.38 (35.05) | 15,000 (1034) |
15SCSS-FNS4 | FNS4 | 0.12 (3.05) | 0.28 | 3.43 (87.12) | - | - | 0.94 (23.81) | 15,000 (1034) |
15SCSS-FNS6 | FNS6 | 0.22 (5.59) | 0.84 | 3.82 (97.03) | - | - | 1.13 (28.58) | 15,000 (1034) |
15SCSS-FNS8 | FNS8 | 0.36 (9.12) | 2.30 | 4.55 (115.57) | - | - | 1.38 (35.05) | 15,000 (1034) |
15SCOSS-FNS4 | FNS4 | 0.12 (3.05) | 0.28 | 3.43 (87.12) | - | - | 0.94 (23.81) | 15,000 (1034) |
15SCOSS-FNS6 | FNS6 | 0.22 (5.59) | 0.84 | 3.82 (97.03) | - | - | 1.13 (28.58) | 15,000 (1034) |
15SCOSS-FNS8 | FNS8 | 0.36 (9.12) | 2.30 | 4.55 (115.57) | - | - | 1.38 (35.05) | 15,000 (1034) |
20SCSS-MF4 | MF4 | 0.125 (3.18) | 0.28 | 2.94 (74.68) | 0.38 (9.65) | 0.50 (12.70) | 0.81 (20.57) | 20,000 (1379) |
20SCSS-MF6 | MF6 | 0.218 (5.54) | 0.84 | 3.34 (84.84) | 0.44 (11.18) | 0.62 (15.75) | 1.00 (25.40) | 20,000 (1379) |
20SCSS-MF9 | MF9 | 0.359 (9.12) | 2.30 | 4.35 (110.49) | 0.55 (12.97) | 0.94 (23.81) | 1.38 (35.05) | 20,000 (1379) |
20SCSS-MF12 | MF12 | 0.516 (13.11) | 4.70 | 5.50 (139.70) | 0.62 (15.75) | 1.19 (30.23) | 1.75 (44.45) | 20,000 (1379) |
20SCSS-MF16 | MF16 | 0.688 (17.48) | 7.40 | 7.07 (179.59) | 0.74 (18.80) | 1.38 (35.05) | 2.12 (53.85) | 20,000 (1379) |
20SCOSS-MF4 | MF4 | 0.125 (3.18) | 0.28 | 2.94 (74.68) | 0.38 (9.65) | 0.50 (12.70) | 0.81 (20.57) | 20,000 (1379) |
20SCOSS-MF6 | MF6 | 0.128 (5.54) | 0.84 | 3.12 (79.25) | 0.47 (11.94) | 0.62 (15.75) | 1.00 (25.40) | 20,000 (1379) |
20SCOSS-MF9 | MF9 | 0.259 (9.12) | 2.30 | 4.18 (106.17) | 0.53 (13.46) | 0.94 (23.81) | 1.38 (35.05) | 20,000 (1379) |
20SCOSS-MF12 | MF12 | 0.516 (13.11) | 4.70 | 5.50 (139.70) | 0.62 (15.75) | 1.19 (30.32) | 1.75 (44.45) | 20,000 (1379) |
20SCOSS-MF16 | MF16 | 0.688 (17.48) | 7.40 | 6.63 (168.40) | 0.72 (18.29) | 1.38 (35.05) | 2.12 (53.85) | 20,000 (1379) |