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The MAC 55 Series is a 3-way balanced spool valve piloted by a small direct operated balanced poppet valve. This is an extremely versatile valve: 1. It can be converted for use in vacuum. 2. It can be changed from an Internal Pilot to an External Pilot function by simply rotating the adaptor between the pilot and valve main bodies. 3. It can also be converted to a remote air operated valve by removing the solenoid pilot assembly – just to name a few. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website.
Cv (Max): 2.2
Port Sizes: 1/4″-3/8″
Configurations: Individual Inline
55 Series Catalog Pages
55 Series Remote Air Pages
Related products
68 Series
Large 3-Way Valves The MAC 68 Series is a 3-way balanced spool valve pilot operated by a small direct operated 4-way solenoid valve - a one-off in valve manufacturing. The 4-way pilot means a low minimum operating pressure - no pistons or springs - and minimal resistance to shifting. The balanced design in the pilot means shifting forces are consistently high and response times are repeatable regardless of inlet pressure fluctuations. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 31
Port Sizes: 1'-1 1/2'
Configurations: Individual Inline/Manifold
68 Series Catalog Pages
68 Series Remote Air Pages
69 Series
Large 3-Way Valves The MAC 69 Series is a 3-way balanced spool valve piloted by a small direct operated 4-way solenoid pilot - a one-off in air valve manufacturing. The 4-way pilot means a low minimum operating pressure - no pistons or springs - and minimal resistance to shifting. The balanced design in the pilot means shifting forces are consistently high and response times are repeatable regardless of inlet pressure fluctuations. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 60
Port Sizes: 1 1/2'-2 1/2'
Configurations: Individual Inline/Manifold
69 Series Catalog Pages
69 Series Remote Air Pages
Quickview53 Series
Large 3-Way Valves The MAC 53 Series is a 3-way balanced spool valve piloted by a small direct operated 4-way solenoid pilot - a one-off in air valve manufacturing. The 4-way pilot means a low minimum operating pressure - no pistons or springs - and minimal resistance to shifting. The balanced design in the pilot means shifting forces are consistently high and response times are repeatable regardless of inlet pressure fluctuations. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 2
Port Sizes: 1/4'-3/8'
Configurations: Individual Sub Base - Manifold: Non Plug-in
53 Series Catalog Pages
53 Series Circuit Bar Pages
53 Series Remote Air Pages
Martin Mac 550 Manual
67 Series
Large 3-Way Valves The MAC 67 Series is a 3-way balanced spool valve piloted by a small direct operated 4-way solenoid pilot - a one-off in air valve manufacturing. The 4-way pilot means a low minimum operating pressure - no pistons or springs - and minimal resistance to shifting. The balanced design in the pilot means shifting forces are consistently high and response times are repeatable regardless of inlet pressure fluctuations. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 20
Port Sizes: 3/4'-1'
Configurations: Individual Inline/Manifold
67 Series Catalog Pages
67 Series Remote Air Pages
58 Series
Large 3-Way ValvesMac 550 Manual
The MAC 58 Series is a 3-way balanced spool valve piloted by our 200 series (which means this large 3-way valve can also be ordered with the 200 series Hazardous Location version as a pilot - giving it the same standard). This is an extremely versatile valve: 1. It can be converted for use in vacuum. 2. It can be changed from a Normally Closed function to a Normally Open function by simply rotating a function plate between the pilot and the main valve bodies. 3. It can also be converted to a remote air operated valve by removing the solenoid pilot assembly - just to name a few. For information regarding certifications (such as CL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 26
Port Sizes: 1'-1 1/2'
Configurations: Individual Inline
58 Series Catalog Pages
58 Series Remote Air Pages
56 Series
Large 3-Way Valves The MAC 56 Series is a 3-way balanced spool valve piloted by a small direct operated balanced poppet valve. This is an extremely versatile valve: 1. It can be converted for use in vacuum. 2. It can be changed from a Normally Closed function to a Normally Open function by simply rotating a function plate between the pilot and main valve bodies. 3. It can also be converted to a remote air operated valve by removing the solenoid pilot assembly - just to name a few. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 5.7
Port Sizes: 3/8'-3/4'
Configurations: Individual Inline
56 Series Catalog Pages
56 Series Remote Air Pages
57 Series
Large 3-Way Valves The MAC 57 Series is a 3-way balanced spool valve piloted by our 200 series (which means this large 3-way valve can also be ordered with the 200 series Hazardous Location version as a pilot - giving it the same standard). This is an extremely versatile valve: 1. It can be converted for use in vacuum. 2. It can be changed from a Normally Closed function to a Normally Open function by simply rotating a function plate between the pilot and the main valve bodies. 3. It can also be converted to a remote air operated valve by removing the solenoid pilot assembly - just to name a few. For information regarding certifications (such as CL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 17.4
Port Sizes: 1/2'-1'
Configurations: Individual Inline
57 Series Catalog Pages
57 Series Remote Air Pages
Mac 550 Service Manual
54 Series
Large 3-Way Valves The MAC 54 Series is a 3-way balanced spool valve piloted by a small direct operated balanced poppet valve. This is an extremely versatile valve: 1. It can be converted for use in vacuum. 2. It can be changed from a Normally Closed function to a Normally Open function. Huge flow in a compact package size is the best way to describe this valve series. 3. It also can be converted to a remote air operated valve by removing the solenoid pilot assembly - just to name a few. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 4.1
Port Sizes: 3/8'-3/4'
Configurations: Sub-base/Manifold Mount
54 Series Catalog Pages
54 Series MAConnect Pages
Mac 550 Profile Manual
52 Series
Large 3-Way Valves The MAC 52 Series is a 3-way balanced spool valve pilot operated by a small direct operated 4-way solenoid valve - a one-off in valve manufacturing. The 4-way pilot means a low minimum operating pressure - no pistons - and minimal resistance to shifting. The balanced design in the pilot means shifting forces are consistently high and response times are repeatable regardless of inlet pressure fluctuations. For information regarding certifications (such as UL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions
Cv (Max): 1.5
Port Sizes: 1/8'-1/4'
Configurations: Inline/Sub Base - Manifold: Non Plug-in
52 Series Catalog Pages
52 Series Circuit Bar Pages
52 Series Intrinsically Safe Pages
59 Series
Large 3-Way Valves The MAC 59 Series is a 3-way balanced spool valve piloted by our 200 series (which means this large 3-way valve can also be ordered with the 200 series Hazardous Location version as a pilot - giving it the same standard). This is an extremely versatile valve: 1. It can be converted for use in vacuum. 2. It can be changed from a Normally Closed function to a Normally Open function by simply rotating a function plate between the pilot and the main valve bodies. 3. It can also be converted to a remote air operated valve by removing the solenoid pilot assembly - just to name a few. For information regarding certifications (such as CL, CSA, RoHS and CE) please visit the Get Support pages on our website. Application, Installation and Service Precautions