NPT Male Flow Orifices and Flow Restrictors
Description
NPT Male Flow Orifices and Flow Restrictors are devices designed to control the flow rate of fluids through a system. They achieve this by providing a fixed restriction within the flow path, which limits the volume of fluid that can pass through at any given time. These devices are typically equipped with male National Pipe Thread (NPT) connections, allowing them to be easily integrated into various piping systems.
Working Principle
The working principle of NPT Male Flow Orifices and Flow Restrictors is based on the concept of creating a pressure drop across the device. As fluid enters the orifice or restrictor, the reduced cross-sectional area causes an increase in velocity and a corresponding decrease in pressure. This pressure differential is what limits the flow rate. These devices are useful because they provide a simple and reliable means of controlling fluid flow without the need for complex control systems. They are particularly effective in maintaining consistent flow rates in systems where pressure, temperature, and viscosity remain constant.
Applications
NPT Male Flow Orifices and Flow Restrictors are used in a variety of applications. For example, they are employed in water jet systems to convert pressure into velocity, producing a high-speed stream of water. They are also used in atmospheric burners to ensure the correct gas flow while maintaining sufficient velocity and suction. Additionally, these devices are utilized in particle counting systems as an inactive control method, relying on constant pressure and temperature conditions.
Advantages over other Flow Orifices and Flow Restrictors
One advantage of NPT Male Flow Orifices and Flow Restrictors is their compatibility with standard NPT connections, which are widely used in many industries. This makes them easy to integrate into existing systems without the need for special adapters or modifications. Additionally, their simple design and lack of moving parts contribute to their reliability and low maintenance requirements compared to more complex flow control devices.
Limitations
A limitation of NPT Male Flow Orifices and Flow Restrictors is that they rely on constant pressure, temperature, and viscosity to maintain accurate flow control. Variations in these parameters can lead to changes in flow rate, which may not be acceptable in all applications. Furthermore, the fixed nature of the restriction means that they are not suitable for applications requiring variable flow rates.
Considerations
When selecting NPT Male Flow Orifices and Flow Restrictors, it is important to consider factors such as initial costs, operating expenses, and durability. These devices are generally cost-effective due to their simple design and low maintenance requirements. However, their accuracy can be affected by changes in system conditions, so they may not be suitable for applications requiring precise flow control. Replacement and maintenance costs are typically low, but it is essential to ensure that the materials used are compatible with the fluids being handled to prevent corrosion and wear.
from Beswick Engineering Co., Inc.
1/8â € NPT male threaded barb fitting with micro-drilled orifice for precise flow restriction. Max Pressure Rating: 100 psig, when used with appropriately sized polyurethane tubing. With a clamp installed, the limiting factor generally becomes the burst pressure of the tubing. Features Beswick... [See More]
- Connection: Male NPT
- Max Pressure: 100
- Orifice Diameter: 0.0040 to 0.0760
- Fitting Type: Adapter
from RS Components, Ltd.
Minimises installation time and cost. Speed may be accurately controlled even at low velocity. Constant speed easily achieved. Retaining function prevents accidental loss of needle. Meter out only free flow return. Tapered port threads (not M5). Manufacturer Series = AS. Type = Exhaust. Inlet Port... [See More]
- Connection: Male NPT; Female NPT; NPT 3/8 Male, NPT 3/8 Female
- Fitting Type: Exhaust
- Max Pressure: 14.5 to 218
- Fitting / Connection Size: NPT 3/8 Male, NPT 3/8 Female
from O'Keefe Controls Co.
Checked orifices are a series arrangement of a precision orifice, a ball check valve and an optional screen. The all metal assemblies are made of brass or stainless steel. Gas or liquid can flow in one direction only, at a rate established by the metering orifice. Reverse pressure differential does... [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 200
- Orifice Diameter: 0.0102
- Max Gas Flow: 0.0562 to 0.1635
from ABB Measurement & Analytics
The 1330L can be ordered with internal NPT threads or flanged pipe runs, welded both upstream and downstream of the flow restriction. The orifice assembly may be directly mounted to the transmitter or remote using an optional adapter kit. [See More]
- Connection: Male NPT; Flange
- Max Pressure: 0.3613 to 7.23
- Orifice Diameter: 0.0200 to 0.9180
- Max Liquid Flow: 0.0014 to 43.81
from Beswick Engineering Co., Inc.
1/8â € NPT male threaded barb fitting with a pressed in sapphire jewel for precise flow restriction. Max Pressure Rating: 100 psig, when used with appropriately sized polyurethane tubing. With a clamp installed, the limiting factor generally becomes the burst pressure of the tubing. Features... [See More]
- Connection: Male NPT
- Fitting Type: Adapter
- Max Pressure: 100
from RS Components, Ltd.
Minimises installation time and cost. Speed may be accurately controlled even at low velocity. Constant speed easily achieved. Retaining function prevents accidental loss of needle. Meter out only free flow return. Tapered port threads (not M5). Manufacturer Series = AS. Type = Exhaust. Inlet Port... [See More]
- Connection: Male NPT; Female NPT; NPT 1/8 Male, NPT 1/8 Female
- Fitting Type: Exhaust
- Max Pressure: 14.5 to 218
- Fitting / Connection Size: NPT 1/8 Male, NPT 1/8 Female
from O'Keefe Controls Co.
Precision orifice assemblies that adapt to common fittings used in the process industry. Press-fit inserts are used with standard compression tube fittings to form a precision orifice assembly. The fittings shown here are for 1/4" OD tubing, or 3/16" OD tubing. [See More]
- Connection: Male NPT; Compression Fitting; Push-to-Connect; 1/4" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from RS Components, Ltd.
Minimises installation time and cost. Speed may be accurately controlled even at low velocity. Constant speed easily achieved. Retaining function prevents accidental loss of needle. Meter out only free flow return. Tapered port threads (not M5). Manufacturer Series = AS. Type = Exhaust. Inlet Port... [See More]
- Connection: Male NPT; Female NPT; NPT 1/8 Male, NPT 1/8 Female
- Fitting Type: Exhaust
- Max Pressure: 14.5 to 218
- Fitting / Connection Size: NPT 1/8 Male, NPT 1/8 Female
from O'Keefe Controls Co.
Precision orifice assemblies that adapt to common fittings used in the process industry. Press-fit inserts are used with standard compression tube fittings to form a precision orifice assembly. The fittings shown here are for 1/4" OD tubing, or 3/16" OD tubing. [See More]
- Connection: Male NPT; Compression Fitting; Push-to-Connect; 3/8" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
Fixed flow controls are a parallel arrangement of a ball check valve and a precision orifice. Free flow occurs in one direction and metered flow occurs in the opposite direction. Suitable for both liquids and gases the fixed flow controls are available in brass or stainless steel. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Fitting Type: Nipple
- Orifice Diameter: 0.0102
- Fitting / Connection Size: 1/8" NPT Male
from O'Keefe Controls Co.
Fixed flow controls are a parallel arrangement of a ball check valve and a precision orifice. Free flow occurs in one direction and metered flow occurs in the opposite direction. Suitable for both liquids and gases the fixed flow controls are available in brass or stainless steel. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Fitting Type: Nipple
- Orifice Diameter: 0.0102
- Fitting / Connection Size: 1/8" NPT Male
from O'Keefe Controls Co.
Fixed flow controls are a parallel arrangement of a ball check valve and a precision orifice. Free flow occurs in one direction and metered flow occurs in the opposite direction. Suitable for both liquids and gases the fixed flow controls are available in brass or stainless steel. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Fitting Type: Nipple
- Orifice Diameter: 0.0102
- Fitting / Connection Size: 1/8" NPT Male
from O'Keefe Controls Co.
Fixed flow controls are a parallel arrangement of a ball check valve and a precision orifice. Free flow occurs in one direction and metered flow occurs in the opposite direction. Suitable for both liquids and gases the fixed flow controls are available in brass or stainless steel. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Fitting Type: Nipple
- Orifice Diameter: 0.0102
- Fitting / Connection Size: 1/8" NPT Male
from O'Keefe Controls Co.
Fixed flow controls are a parallel arrangement of a ball check valve and a precision orifice. Free flow occurs in one direction and metered flow occurs in the opposite direction. Suitable for both liquids and gases the fixed flow controls are available in brass or stainless steel. [See More]
- Connection: Male NPT; 1/4" NPT Male
- Fitting Type: Nipple
- Orifice Diameter: 0.0102
- Fitting / Connection Size: 1/4" NPT Male
from O'Keefe Controls Co.
Fixed flow controls are a parallel arrangement of a ball check valve and a precision orifice. Free flow occurs in one direction and metered flow occurs in the opposite direction. Suitable for both liquids and gases the fixed flow controls are available in brass or stainless steel. [See More]
- Connection: Male NPT; 1/4" NPT Male
- Fitting Type: Nipple
- Orifice Diameter: 0.0102
- Fitting / Connection Size: 1/4" NPT Male
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. Type DEL is a two-piece construction. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1680 to 1.68
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. Type DEL is a two-piece construction. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1680 to 1.68
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.1000
- Max Liquid Flow: 13.8 to 138
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/8" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.1000
- Max Liquid Flow: 13.8 to 138
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/4" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/4" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/4" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.1000
- Max Liquid Flow: 13.8 to 138
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/4" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.1000
- Max Liquid Flow: 13.8 to 138
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/2" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/2" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/2" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.1000
- Max Liquid Flow: 13.8 to 138
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 1/2" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.1000
- Max Liquid Flow: 13.8 to 138
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 3/8" NPT Male
- Max Pressure: 2000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5
from O'Keefe Controls Co.
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order. [See More]
- Connection: Male NPT; 3/8" NPT Male
- Max Pressure: 4000
- Orifice Diameter: 0.0102
- Max Liquid Flow: 0.1500 to 1.5