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A CK 4

Series Check Valve

Copper ODF

Connection Size

PCN Description

Connection

Size

(in.)

Opening

Pressure

(oz./sq. in.)

MWP

(psig)

Leak Rate

CIM @ 60 psi

Nominal Tons

R-22 Suction

40°F @ 1 psi

Nominal Tons

R-22 Liquid

40°F @ 1 psi

064985 ACK-4 1/4 ODF 4 7/8 .254 ± .002 0.19 1.2 800 0.015 0.4 2.6

064986 ACK-6 3/8 ODF 4 7/8 .379 ± .002 0.40 1.3 800 0.015 0.6 3.1

064987 ACK-8 1/2 ODF 5 1-1/8 .504 ± .002 0.31 3.5 680 0.034 1.2 9.4

064988 ACK-10 5/8 ODF 5 1-1/8 .629 ± .002 0.50 3.5 680 0.034 1.4 13

064989 ACK-12 3/4 ODF 7 1-5/8 .754 ± .002 0.63 3.8 680 0.074 3.3 27

064990 ACK-14 7/8 ODF 7 1-5/8 .879 ± .003 0.75 3.8 680 0.074 3.7 29

064991 ACK-18 1-1/8 ODF 8-3/8 2-1/8 1.130 ± .003 0.94 6.8 680 0.122 6.0 51

064992 ACK-22 1-3/8 ODF 9-3/8 2-5/8 1.380 ± .003 1.04 10.2 680 0.172 9.5 79

064993 ACK-26 1-5/8 ODF 10-1/2 3-1/8 1.630 ± .003 1.07 11.4 680 0.272 17.0 102

064994 ACK-34 2-1/8 ODF 12 3-5/8 2.130 ± .003 1.34 18.1 680 0.386 30.0 213

064995 ACK-42 2-5/8 ODF 13 4-1/8 2.630 ± .003 1.50 23.0 680 0.512 50.0 375

Emerson

A-1

Components

Superior

ACK-4 MS-4 900M-4S

ACK-6 MS-6 900M-6S

ACK-8 MS-8 900M-8S

ACK-10 MS-10 900M-10S

ACK-12 MS-12 900M-12S

ACK-14 MS-14 900M-14S

ACK-18 MS-18 N/A

ACK-22 MS-22 N/A

ACK-26 MS-26 N/A

ACK-34 MS-34 N/A

ACK-42 MS-42 N/A

2003FC-104 R1 (6/08) Emerson is a trademark of Emerson Electric Co.

Ordering Information

Dimensional Drawing

Cross Reference

Nomenclature

About Emerson Climate Technologies - Flow Controls division

Emerson Climate Technologies - Flow Controls division is a leading manufacturer of valves, controls and system protectors commonly applied

in air conditioning and refrigeration systems worldwide. The company continues to pioneer the control of refrigerant flow through innova-

tive, high performance components, such as thermostatic expansion valves and filter driers. Emerson Climate Technologies - Flow Controls

division is headquartered in St. Louis. For more information, visit Emersonflowcontrols.com.