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Department: InstrumentationX
Product Type: ValvesX
Product Sub-Type: Check ValvesX
Product: Check Valve - Inline - CX
Special Cleaning: Cleaning for oxygen serviceX

Trade Name

A-LOK® (147) CPI™ (46) Seal-Lok® (2)

Series

C2 (15) C4 (142) C6 (60) C8 (102) C12 (28) C16 (29)

Inch/Metric

Inch (336) Metric (40)

Connection Type

Double ferrule compression (133) Double ferrule compression / Male NPT (5) Female NPT (81) Female NPT / Male NPT (2) Male NPT (76) Male NPT / Double ferrule compression (9) Male NPT / Female NPT (13) Male NPT / Single ferrule compression (1) Seal-Lok face seal (2) Single ferrule compression (45) VacuSeal face seal (9)

Inlet port 1

1/8" A-LOK compression (6) 1/8" CPI compression (1) 1/8" female NPT (4) 1/8" male NPT (6) 1/4" A-LOK compression (40) 1/4" CPI compression (12) 1/4" female NPT (22) 1/4" male NPT (40) 1/4" Seal-Lok face seal with o-ring (1) 1/4" VacuSeal face seal (9) 3/8" A-LOK compression (10) 3/8" CPI compression (8) 3/8" female NPT (6) 3/8" male NPT (14) 1/2" A-LOK compression (23) 1/2" CPI compression (17) 1/2" female NPT (26) 1/2" male NPT (34) 3/4" A-LOK compression (10) 3/4" CPI compression (2) 3/4" female NPT (13) 3/4" male NPT (2) 3/4" Seal-Lok face seal with o-ring (1) 1" A-LOK compression (9) 1" CPI compression (5) 1" female NPT (12) 1" male NPT (3) 6mm A-LOK compression (15) 8mm A-LOK compression (4) 10mm A-LOK compression (9) 12mm A-LOK compression (12)

Outlet port 2

1/8" A-LOK compression (6) 1/8" CPI compression (1) 1/8" female NPT (4) 1/8" male NPT (6) 1/4" A-LOK compression (41) 1/4" CPI compression (13) 1/4" female NPT (33) 1/4" male NPT (27) 1/4" Seal-Lok face seal with o-ring (1) 1/4" VacuSeal face seal (9) 3/8" A-LOK compression (13) 3/8" CPI compression (8) 3/8" female NPT (6) 3/8" male NPT (11) 1/2" A-LOK compression (23) 1/2" CPI compression (17) 1/2" female NPT (26) 1/2" male NPT (34) 3/4" A-LOK compression (10) 3/4" CPI compression (2) 3/4" female NPT (13) 3/4" male NPT (2) 3/4" Seal-Lok face seal with o-ring (1) 1" A-LOK compression (9) 1" CPI compression (5) 1" female NPT (12) 1" male NPT (3) 6mm A-LOK compression (15) 8mm A-LOK compression (4) 10mm A-LOK compression (9) 12mm A-LOK compression (12)

CV Factor

0.22 (7) 0.31 (8) 0.66 (1) 0.75 (141) 2.02 (4) 2.09 (20) 2.16 (9) 2.26 (27) 2.93 (12) 3.3 (30) 3.53 (60) 6.01 (28) 6.56 (29)

Material

Brass (123) Stainless Steel (253)

Material - Seats

Ethylene propylene rubber (31) Fluorocarbon rubber (201) Highly fluorinated fluorocarbon rubber (9) Neoprene rubber (18) Nitrile rubber (78) PTFE (39)

Cracking Pressure

1/3 psi (0.02 bar) (100) 1 psi (0.07 bar) (85) 5 psi (0.4 bar) (51) 10 psi (0.7 bar) (51) 25 psi (1.7 bar) (26) 50 psi (3.5 bar) (34) 75 psi (5.2 bar) (5) 100 psi (6.9 bar) (24)

Operating Temperature

-15 F to 200 F (-26 C to 93 C) (9) -15 F to 400 F (-26 C to 204 C) (201) -30 F to 275 F (-34 C to 135 C) (78) -45 F to 250 F (-43 C to 121 C) (18) -65 F to 400 F (-54 C to 204 C) (39) -70 F to 275 F (-57 C to 135 C) (31)

Orifice size

0.093 Inch (2.4mm) (7) 0.125 Inch (3.2mm) (8) 0.172 Inch (4.4mm) (1) 0.187 Inch (4.7mm) (141) 0.250 Inch (6.4mm) (4) 0.281 Inch (7.1mm) (20) 0.312 Inch (7.9mm) (9) 0.359 Inch (9.1mm) (27) 0.375 Inch (9.5mm) (12) 0.423 Inch (10.7mm) (30) 0.453 Inch (11.5mm) (60) 0.594 Inch (15.1mm) (28) 0.656 Inch (16.7mm) (29)

Pressure Rating

3,000 psig (207 bar) CWP (123) 4,000 psig (276 bar) CWP (39) 5,000 psig (345 bar) CWP (16) 6,000 psig (414 bar) CWP (198)
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Check Valve - Inline - CCheck Valve - Inline - C

Check Valve - Inline - C

Parker Inline Check Valve - C Series

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Showing 1 - 20 of 376  
Part # Availability Price/UOM
++ 2A-C2L-1/3-B-C3 Out of Stock - Lead Time Required $101.53
++ 2A-C2L-1/3-SS-C3 Out of Stock - Lead Time Required $129.79
++ 2A-C2L-1/3-T-SS-C3 Out of Stock - Lead Time Required $175.63
++ 2A-C2L-1-SS-C3 Out of Stock - Lead Time Required $128.41
++ 2A-C2L-5-SS-C3 Out of Stock - Lead Time Required $129.79
++ 2A-C2L-10-SS-C3 Out of Stock - Lead Time Required $129.79
++ 2F-C2L-1/3-BN-B-C3 Out of Stock - Lead Time Required $92.22
++ 2F-C2L-1-BN-B-C3 Out of Stock - Lead Time Required $92.22
++ 2F-C2L-5-SS-C3 Out of Stock - Lead Time Required $131.37
++ 2F-C2L-25-SS-C3 Out of Stock - Lead Time Required $131.37
++ 2M-C2L-1/3-SS-C3 Out of Stock - Lead Time Required $122.55
++ 2M-C2L-1-BN-B-C3 Out of Stock - Lead Time Required $125.11
++ 2M-C2L-1-EPR-SS-C3 Out of Stock - Lead Time Required $137.67
2M-C2L-100-B-C3 N/A Call to Order
++ 2Z-C2L-1-SS-C3 Out of Stock - Lead Time Required $128.41
++ 2M-C4L-1/3-B-C3 In Stock $89.51
++ 2M-C4L-1-T-SS-C3 Out of Stock - Lead Time Required $163.57
++ 4A-C4L-1/3-B-C3 Out of Stock - Lead Time Required $99.66
++ 4A-C4L-1/3-BN-B-C3 Out of Stock - Lead Time Required $99.66
++ 4A-C4L-1/3-BN-SS-C3 Out of Stock - Lead Time Required $113.69
UOM Inlet port 1 Outlet port 2 Material - Seats Cracking pressure Material Country of Origin (COO) Harmonized Tariff (HTS)
EA 1/8" A-LOK compression 1/8" A-LOK compression Fluorocarbon rubber 1/3 psi (0.02 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/8" A-LOK compression 1/8" A-LOK compression Fluorocarbon rubber 1/3 psi (0.02 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" A-LOK compression 1/8" A-LOK compression PTFE 1/3 psi (0.02 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" A-LOK compression 1/8" A-LOK compression Fluorocarbon rubber 1 psi (0.07 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" A-LOK compression 1/8" A-LOK compression Fluorocarbon rubber 5 psi (0.4 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" A-LOK compression 1/8" A-LOK compression Fluorocarbon rubber 10 psi (0.7 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" female NPT 1/8" female NPT Nitrile rubber 1/3 psi (0.02 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/8" female NPT 1/8" female NPT Nitrile rubber 1 psi (0.07 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/8" female NPT 1/8" female NPT Fluorocarbon rubber 5 psi (0.4 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" female NPT 1/8" female NPT Fluorocarbon rubber 25 psi (1.7 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" male NPT 1/8" male NPT Fluorocarbon rubber 1/3 psi (0.02 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" male NPT 1/8" male NPT Nitrile rubber 1 psi (0.07 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/8" male NPT 1/8" male NPT Ethylene propylene rubber 1 psi (0.07 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" male NPT 1/8" male NPT Fluorocarbon rubber 100 psi (6.9 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/8" CPI compression 1/8" CPI compression Fluorocarbon rubber 1 psi (0.07 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/8" male NPT 1/8" male NPT Fluorocarbon rubber 1/3 psi (0.02 bar) Brass United States - Required COO must be noted at time of order 8481301090
EA 1/8" male NPT 1/8" male NPT PTFE 1 psi (0.07 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
EA 1/4" A-LOK compression 1/4" A-LOK compression Fluorocarbon rubber 1/3 psi (0.02 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/4" A-LOK compression 1/4" A-LOK compression Nitrile rubber 1/3 psi (0.02 bar) Brass Special request, please call for COO Special request, please call for HTS
EA 1/4" A-LOK compression 1/4" A-LOK compression Nitrile rubber 1/3 psi (0.02 bar) Stainless Steel Special request, please call for COO Special request, please call for HTS
2A-C2L-1/3-B-C3
Out of Stock - Lead Time Required
$101.53
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" A-LOK compression

1/8" A-LOK compression

Fluorocarbon rubber

1/3 psi (0.02 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
2A-C2L-1/3-SS-C3
Out of Stock - Lead Time Required
$129.79
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" A-LOK compression

1/8" A-LOK compression

Fluorocarbon rubber

1/3 psi (0.02 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2A-C2L-1/3-T-SS-C3
Out of Stock - Lead Time Required
$175.63
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" A-LOK compression

1/8" A-LOK compression

PTFE

1/3 psi (0.02 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2A-C2L-1-SS-C3
Out of Stock - Lead Time Required
$128.41
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" A-LOK compression

1/8" A-LOK compression

Fluorocarbon rubber

1 psi (0.07 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2A-C2L-5-SS-C3
Out of Stock - Lead Time Required
$129.79
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" A-LOK compression

1/8" A-LOK compression

Fluorocarbon rubber

5 psi (0.4 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2A-C2L-10-SS-C3
Out of Stock - Lead Time Required
$129.79
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" A-LOK compression

1/8" A-LOK compression

Fluorocarbon rubber

10 psi (0.7 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2F-C2L-1/3-BN-B-C3
Out of Stock - Lead Time Required
$92.22
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" female NPT

1/8" female NPT

Nitrile rubber

1/3 psi (0.02 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
2F-C2L-1-BN-B-C3
Out of Stock - Lead Time Required
$92.22
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" female NPT

1/8" female NPT

Nitrile rubber

1 psi (0.07 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
2F-C2L-5-SS-C3
Out of Stock - Lead Time Required
$131.37
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" female NPT

1/8" female NPT

Fluorocarbon rubber

5 psi (0.4 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2F-C2L-25-SS-C3
Out of Stock - Lead Time Required
$131.37
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" female NPT

1/8" female NPT

Fluorocarbon rubber

25 psi (1.7 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2M-C2L-1/3-SS-C3
Out of Stock - Lead Time Required
$122.55
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" male NPT

1/8" male NPT

Fluorocarbon rubber

1/3 psi (0.02 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2M-C2L-1-BN-B-C3
Out of Stock - Lead Time Required
$125.11
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" male NPT

1/8" male NPT

Nitrile rubber

1 psi (0.07 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
2M-C2L-1-EPR-SS-C3
Out of Stock - Lead Time Required
$137.67
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" male NPT

1/8" male NPT

Ethylene propylene rubber

1 psi (0.07 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2M-C2L-100-B-C3
N/A
Call to Order
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" male NPT

1/8" male NPT

Fluorocarbon rubber

100 psi (6.9 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
2Z-C2L-1-SS-C3
Out of Stock - Lead Time Required
$128.41
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" CPI compression

1/8" CPI compression

Fluorocarbon rubber

1 psi (0.07 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
2M-C4L-1/3-B-C3
In Stock
$89.51
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" male NPT

1/8" male NPT

Fluorocarbon rubber

1/3 psi (0.02 bar)

Brass

United States - Required COO must be noted at time of order

8481301090
2M-C4L-1-T-SS-C3
Out of Stock - Lead Time Required
$163.57
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/8" male NPT

1/8" male NPT

PTFE

1 psi (0.07 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
4A-C4L-1/3-B-C3
Out of Stock - Lead Time Required
$99.66
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" A-LOK compression

1/4" A-LOK compression

Fluorocarbon rubber

1/3 psi (0.02 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
4A-C4L-1/3-BN-B-C3
Out of Stock - Lead Time Required
$99.66
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" A-LOK compression

1/4" A-LOK compression

Nitrile rubber

1/3 psi (0.02 bar)

Brass

Special request, please call for COO

Special request, please call for HTS
4A-C4L-1/3-BN-SS-C3
Out of Stock - Lead Time Required
$113.69
View

UOM:

Inlet port 1:

Outlet port 2:

Material - Seats:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" A-LOK compression

1/4" A-LOK compression

Nitrile rubber

1/3 psi (0.02 bar)

Stainless Steel

Special request, please call for COO

Special request, please call for HTS
Showing 1 - 20 of 376
Parker C Series Check Valves are designed for uni-directional flow control of fluids and gases in industries such as chemical processing, oil and gas production and transmission, pharmaceutical, pulp and paper, power and utilities.

Application: In the key markets of chemical & refining, food, beverage & dairy, medical & dental, microelectronics, oil & gas, and power generation.
Parker Instrumentation Check Valves
Parker Instrumentation Check Valves
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