The H14W-16T high-flow brass horizontal check valve is a threaded non-return valve designed to allow flow in the intended direction while restricting reverse flow.
This model is available in 1/2″, 3/4″ and 1″ sizes with ISO 228 threaded connections.
The catalogue specifies a nominal pressure of 1.6 MPa and a working temperature range of -20°C to 120°C.
The specified working media are water and steam.
For steam service, the catalogue states a pressure limit of ≤ 0.6 MPa.
About “High Flow”:
“High Flow” is the catalogue designation for this H14W-16T model.
The supplied technical sheet does not provide a Cv/Kv value, measured flow rate or a quantified comparison with the standard version, so flow performance should not be expressed as a specific numerical improvement without additional test data.
How Does a Horizontal Check Valve Work?
A check valve is designed to control flow automatically without requiring a manual handle.
Forward-flow pressure moves the internal closing component away from the sealing position and allows fluid to pass through the valve.
When forward flow decreases or reverse pressure develops, the internal closing component moves back toward the seat and restricts reverse flow.
Fluid enters the valve in the intended flow direction.
Sufficient forward pressure moves the internal closing component away from its sealing position.
Flow continues through the internal passage toward the outlet.
When flow stops or reverses, the internal element returns toward the seat and limits backflow.
Structure Note:
The catalogue drawing shows the internal valve arrangement, but it does not provide a complete component material list or enough information to publish specific seat or internal material claims. These details should be confirmed separately if required for a project.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | High-Flow Brass Horizontal Check Valve |
| Model | H14W-16T |
| Body Material | Brass |
| Connection | Female Threaded Ends |
| Thread Standard | ISO 228 |
| Thread Designation | G Thread |
| Size Range | 1/2″–1″ |
| Nominal Pressure | 1.6 MPa |
| Working Medium | Water; Steam ≤ 0.6 MPa |
| Working Temperature | -20°C to 120°C |
| Product Standard | GB/T 8464 |
| Pressure Test Standard | GB/T 13927 |
Dimensions
The H14W-16T high-flow brass check valve is available in three threaded sizes.
| DN | Size | Thread | L (mm) | B (mm) | H (mm) |
|---|---|---|---|---|---|
| 15 | 1/2″ | G1/2 | 50 | 14 | 32 |
| 20 | 3/4″ | G3/4 | 60 | 18.5 | 36.5 |
| 25 | 1″ | G1 | 68 | 23 | 41 |
Thread Note:
The catalogue specifies ISO 228 threads and identifies the available connections as G1/2, G3/4 and G1.
These are parallel pipe-thread designations and should not be treated as interchangeable with NPT connections.
Why Is the ISO 228 Thread Specification Important?
This model is supplied with ISO 228 G-thread connections.
Confirming the exact thread standard matters because nominal pipe size alone does not determine whether two threaded components are compatible.
For example, a 1/2″ G thread and a 1/2″ NPT connection may have similar nominal sizes but use different thread geometry and sealing concepts.
Before ordering, buyers should therefore confirm:
- Nominal valve size
- ISO 228 / G-thread requirement
- Female connection requirement
- Mating pipe or fitting
- Required sealing arrangement
For more detail, see our guide to
BSP vs NPT thread differences
.
What Does the High-Flow Design Mean?
The manufacturer catalogue identifies H14W-16T as a
high-flow horizontal check valve.
However, product names such as “high flow” should be separated from measured hydraulic performance.
The technical sheet provided for this model does not state:
- Cv value
- Kv value
- Maximum flow rate
- Pressure-drop curve
- Percentage increase compared with the standard model
Buyer Tip:
If actual flow capacity is critical to a project, request flow coefficient or pressure-drop data rather than selecting the valve only from the “High Flow” product designation.
Working Medium and Temperature
According to the supplied catalogue specification, this model can be used with:
Water is listed as an applicable working medium within the specified valve operating conditions.
Steam is listed with a catalogue pressure limitation of ≤ 0.6 MPa.
The specified working temperature range is
-20°C to 120°C.
Application Note:
Valve selection should be based on the combined medium, temperature, pressure, connection and system requirements.
The general nominal pressure rating should not be used alone to assume suitability for every steam or water application.
What Should Buyers Confirm Before Ordering?
Choose between 1/2″, 3/4″ and 1″ according to the piping connection.
Confirm that ISO 228 G threads match the mating pipe or fitting.
Confirm whether the application uses water, steam or another medium requiring separate evaluation.
Check system pressure against the valve specification, including the ≤ 0.6 MPa catalogue limit stated for steam.
Confirm that the operating temperature remains within the specified -20°C to 120°C range.
If flow capacity is a critical design parameter, request appropriate flow or pressure-drop data for evaluation.
Quality Control Points
A threaded brass check valve should be evaluated through both dimensional inspection and functional testing.
- Brass body condition
- ISO 228 female thread dimensions
- Thread cleanliness and burr control
- Internal component assembly
- Opening and closing function
- Flow direction marking where applicable
- Pressure testing according to the agreed specification
Pressure Testing:
The supplied technical sheet states that pressure testing follows GB/T 13927.
Specific test pressure and acceptance requirements should follow the applicable product specification and order requirements.
You can also browse our
brass check valves
for other check-valve configurations and size ranges.
Frequently Asked Questions
What sizes are available?
The H14W-16T high-flow brass horizontal check valve is available in 1/2″, 3/4″ and 1″ sizes.
What thread standard does this valve use?
The catalogue specifies ISO 228 threaded connections. The listed thread designations are G1/2, G3/4 and G1.
What is the nominal pressure?
The catalogue specifies a nominal pressure of 1.6 MPa.
Can this brass check valve be used with steam?
Steam is listed as an applicable working medium, with a catalogue pressure limitation of ≤ 0.6 MPa. The specified working temperature range is -20°C to 120°C. Final suitability should still be checked against the complete system conditions.
What does “High Flow” mean for this check valve?
“High Flow” is the catalogue designation for model H14W-16T. The supplied specification does not provide Cv, Kv or pressure-drop data, so a specific flow improvement should not be claimed without additional test information.
Is G thread the same as NPT?
No. ISO 228 G threads are parallel pipe threads and are different from NPT in thread form and sealing concept. The mating connection should be confirmed before ordering.
Which pressure-test standard is specified?
The supplied catalogue states that pressure testing follows GB/T 13927.
Need a High-Flow Brass Check Valve?
Send us your required size, quantity, working medium, pressure and application.
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