How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Straight-Flow Rectangular Manifolds


Unlike other manifolds, which have an inlet on either end, these have one inlet on the opposite side from the outlets. This design allows fluid or air to follow a straight path, improving flow through your system. It also frees up the ends of the manifold, so you can mount it in corners and in narrow spaces. Manifolds are also known as headers. They have mounting holes, so you can mount from the top or side.
Anodized aluminum manifolds are the industry standard for the most common types of applications. They are lighter in weight than other metal manifolds and have good corrosion resistance. These manifolds are anodized for a black finish.
Use a plug (sold separately) to close off any unused inlets and outlets.
- For Use With: Air, Water, Hydraulic Fluid
- Temperature Range: -10° to 200° F
- Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 1,000 psi @ 72° F
Hydraulic Fluid: 3,000 psi @ 72° F
Inlet | Outlet | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
No. of Outlets | Thread Size | Dash Size | Thread Size | Dash Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Color | Each | |
Standard Outlet Spacing | |||||||||||
2 | 9/16"-18 | 6 | 7/16"-20 | 4 | 2 1/8" | 1 1/4" | 1 1/4" | 7/8" | Black | 00000000 | 000000 |
2 | 1 1/16"-12 | 12 | 3/4"-16 | 8 | 4" | 2" | 2" | 1 1/2" | Black | 00000000 | 00000 |
3 | 1 1/16"-12 | 12 | 3/4"-16 | 8 | 5 1/2" | 2" | 2" | 1 1/2" | Black | 00000000 | 00000 |
3 | 1 5/16"-12 | 16 | 1 1/16"-12 | 12 | 7" | 2 1/2" | 2 1/2" | 2" | Black | 00000000 | 000000 |
4 | 9/16"-18 | 6 | 7/16"-20 | 4 | 3 7/8" | 1 1/4" | 1 1/4" | 7/8" | Black | 00000000 | 00000 |
4 | 3/4"-16 | 8 | 9/16"-18 | 6 | 4 3/4" | 1 1/2" | 1 1/2" | 1" | Black | 00000000 | 00000 |
4 | 1 1/16"-12 | 12 | 3/4"-16 | 8 | 7" | 2" | 2" | 1 1/2" | Black | 00000000 | 00000 |
6 | 9/16"-18 | 6 | 7/16"-20 | 4 | 5 5/8" | 1 1/4" | 1 1/4" | 7/8" | Black | 00000000 | 00000 |
6 | 1 5/16"-12 | 16 | 1 1/16"-12 | 12 | 13" | 2 1/2" | 2 1/2" | 2" | Black | 00000000 | 000000 |
8 | 7/16"-20 | 4 | 5/16"-24 | 2 | 6 1/4" | 1" | 1" | 3/4" | Black | 00000000 | 00000 |
8 | 9/16"-18 | 6 | 7/16"-20 | 4 | 7 3/8" | 1 1/4" | 1 1/4" | 7/8" | Black | 00000000 | 00000 |
Flow-Adjustment Valve Manifolds for Sealed Systems



A sealed design prevents contamination in dirty and dusty environments. Use these manifolds to serve multiple lubrication points from a single location. Adjust the flow to individual lubrication points by turning the dial on the corresponding valve. Each valve can be removed for cleaning without disturbing the rest of the system. They can be used with any oil grade. Flow rate depends on temperature. They have NPTF (Dryseal) threads, which are compatible with NPT threads.
Oil Outlet | Oil Inlet | Overall | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of | For Tube OD | Gender | Location | Thread Type | Pipe Size | Gender | Ht. | Wd. | Dp. | Max. Oil Outlet Pressure, psi | Material | Temp. Range, °F | Mounting Thread Size | Features | Each | |
2 | 1/4" | Female | Top | NPTF | 1/4 | Female | 3 13/16" | 4 3/16" | 1 11/16" | 125 | Aluminum | -30° to 250° | 5/8"-18 | Glass Flow Sight | 0000000 | 0000000 |
3 | 1/4" | Female | Top | NPTF | 1/4 | Female | 3 13/16" | 4 15/16" | 1 11/16" | 125 | Aluminum | -30° to 250° | 5/8"-18 | Glass Flow Sight | 0000000 | 000000 |
4 | 1/4" | Female | Top | NPTF | 1/4 | Female | 3 13/16" | 5 11/16" | 1 11/16" | 125 | Aluminum | -30° to 250° | 5/8"-18 | Glass Flow Sight | 0000000 | 000000 |
Flow-Adjustment Valve Manifolds for Vented Systems



For use in clean environments, these manifolds have multiple air vents that keep pressure balanced. Use them to serve multiple lubrication points from a single location. Adjust the flow to individual lubrication points by turning the dial on the corresponding valve. Each valve can be removed for cleaning without disturbing the rest of the system. They can be used with any oil grade. Flow rate depends on temperature. They have NPTF (Dryseal) threads, which are compatible with NPT threads.
Oil Outlet | Oil Inlet | Overall | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of | For Tube OD | Gender | Location | Thread Type | Pipe Size | Gender | Ht. | Wd. | Dp. | Material | Temp. Range, °F | Mounting Thread Size | Features | Each | |
2 | 1/4" | Female | Top | NPTF | 1/4 | Female | 3 13/16" | 4 3/16" | 1 11/16" | Aluminum | -30° to 250° | 5/8"-18 | Glass Flow Sight | 0000000 | 0000000 |
3 | 1/4" | Female | Top | NPTF | 1/4 | Female | 3 13/16" | 4 15/16" | 1 11/16" | Aluminum | -30° to 250° | 5/8"-18 | Glass Flow Sight | 0000000 | 000000 |
4 | 1/4" | Female | Top | NPTF | 1/4 | Female | 3 13/16" | 5 11/16" | 1 11/16" | Aluminum | -30° to 250° | 5/8"-18 | Glass Flow Sight | 0000000 | 000000 |
Metering Valves for Oil-Dispensing Pumps

Use these valves with manual and electric pumps to dispense different amounts of oil from multiple lubrication points. They have a check valve to prevent backward flow. To connect to tubing, use a compression nut and sleeve (sold separately).
Flow rate trade number indicates the relative amount of oil each valve delivers. For each increase in trade size, the amount of oil delivered approximately doubles. For example, 0 delivers twice the amount of oil that 00 delivers. In a system with two lubrication points, the lubrication point connected to 0 will receive 2/3 of the oil dispensed, and the lubrication point connected to 00 will receive 1/3 of the oil dispensed. In general, valves with lower relative flow rates are better for cycling systems; valves with higher relative flow rates are better for continuous recirculation systems.
Oil Outlet | Oil Inlet | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Type | Pipe Size | Thread Size | Gender | Thread Type | Thread Size | Gender | Max. Oil Outlet Pressure, psi | Lg. | Hex Wd., mm | Material | Temp. Range, °F | Choose a Flow Rate Trade Number | Each | |
NPT | 1/8 | __ | Male | UNF | 5/16"-24 | Male | 200 | 1" | 10 | Brass | 32° to 120° | 0000000 | 000000 | |
UNF | __ | 5/16"-24 | Male | UNF | 5/16"-24 | Male | 200 | 1" | 10 | Brass | 32° to 120° | 0000000 | 00000 |
Air Conditioner Charging and Testing Manifolds
Monitor refrigerant pressure with analog gauges when servicing air conditioning systems. All manifolds have double O-ring piston valves.
Replacement gauges are sold separately.
Optional gauge cover sets (sold separately) include one blue and one red gauge cover. They are not for use with the manifolds for R-410A refrigerant.

Hose | |||||||
---|---|---|---|---|---|---|---|
For Refrigerant Number | Valve Material | Connection | Lg., ft. | Dia. | Color | Each | |
Two Valve | |||||||
R-134A | Brass | 1/2"-16 Acme × 7/16"-20 UNF × 7/16"-20 UNF | 6 | 2 1/2" | One Blue and One Red | 0000000 | 0000000 |