PRODUCT FEATURES
Threaded Gate Valve — Product Features
“A manual threaded gate valve offering threaded connection options, a variety of material choices, and PTFE seals. Please refer to the enclosed technical specifications for details.
Gate Valve Body
A threaded gate valve specifically designed for manual on/off operation in piping systems.
Manual Gate Valve Operation
– Turn the handwheel clockwise → the valve stem moves downward, the gate descends, and the valve closes – Turn the handwheel counterclockwise → the valve stem moves upward, the gate lifts, and the flow path opens
Connection Type
Threaded connection; please confirm the required sizes and specifications.
Threaded Connections
BSPT, BSPP, and NPT thread types are available; please confirm the required sizes and specifications.
Materials and Seat Options
The parts list includes WCB / CF8 / CF8M / 2205 body materials and PTFE seat components.
OPERATING PRINCIPLE
How Threaded Gate Valve Works
1. Turning the handwheel causes the valve stem to rotate; the valve stem has a trapezoidal thread, which converts the rotational movement into **upward and downward linear movement**.
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Operation 1
2. Turn the handwheel anti-clockwise → the valve stem is raised, causing the wedge-shaped gate to move upwards and away from the sealing surface of the valve seat, fully opening the flow passage and opening the valve.
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Operation 2
3. Turn the handwheel clockwise → the valve stem moves downwards, pressing the wedge-shaped gate downwards against the sealing surfaces of the valve seats on both sides, cutting off the flow path; the valve is closed.
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4. Function of the wedge-shaped surface
Once the gate has moved downwards into position, the wedge-shaped structure generates a clamping force, ensuring a tight seal against the valve seats.
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> Key points
The gate moves up and down **perpendicularly to the direction of the medium flow**; when fully open, the gate is completely withdrawn from the flow passage, leaving the passage unobstructed.
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Operation 5
> The valve must be either fully open or fully closed; **throttling in a half-open position is strictly prohibited**, as high-velocity media will erode and damage the sealing surfaces.
ENGINEERING DATA
Technical Specifications
Technical data supplied for Threaded Gate valve. Ratings and material combinations should be confirmed for the selected configuration.
| PARAMETER | SPECIFICATION |
|---|---|
| Product type | Manual threaded gate valve |
| Size range | “1/2–4” (DN15–DN100) |
| Thread specifications | BSPT / BSPP / NPT |
| Body material | WCB/CF8 / CF8M |
| Working Pressure | 1.6 MPa |
| Working Temperature | 0°C to 120°C |
| Design and Manufacture | ASME B16.34 |
| Inspection and Testing | API 598 |
| Body/Casing Test Pressure | 1.6 MPa |
| Seat Seal Test Pressure | 1.6 MPa |
| Air Tightness Test Pressure | 1.2 MPa |
MECHANICAL DIMENSIONS
Dimensions & drawings.
Compare connection size with the corresponding overall length, bore and handle clearance dimensions from the supplied drawing.
Dimension chart
| SIZE | DN | L | W | B | H |
|---|---|---|---|---|---|
| 1/2″ | DN15 | 52 | 70 | 25 | 93 |
| 3/4″ | DN20 | 57.5 | 70 | 30 | 100 |
| 1″ | DN25 | 61.5 | 70 | 37 | 112 |
| 1-1/4″ | DN32 | 71 | 80 | 45.5 | 125 |
| 1-1/2″ | DN40 | 74 | 100 | 52 | 142 |
| 2″ | DN50 | 83 | 100 | 64 | 162 |
Refer to the supplied dimension chart.
COMPONENT BREAKDOWN
Parts & Materials
Component names and materials from the supplied product parts list.
| NO. | PART | MATERIAL |
|---|---|---|
| 01 | Body | CF8 / CF8M |
| 02 | Wedge Disc | CF8 / CF8M |
| 03 | Stem | 304 / 316 |
| 04 | Gasket | PTFE |
| 05 | Bonnet | CF8 / CF8M |
| 06 | Gland | CF8 / CF8M |
| 07 | Handwheel | 铸铁 Cast iron |
APPLICATIONS
Applications
Applicable media: the supplied document lists the following fluids. Actual compatibility depends on selected materials, concentration, temperature, pressure and the specific service conditions.
Application – Water Circulation
Cooling water, circulating water, drinking water and neutral purified water.
Application – Steam Piping
Clean, low-temperature saturated steam, subject to the product’s confirmed temperature and pressure limits.
Application – Compressed Air
Compressed air and nitrogen; verify compatibility for each system.
PURCHASING SUPPORT
Frequently Asked Questions
Find answers to common questions about sizing, materials, threaded connections and operating conditions.
What is threaded gate valve?
Threaded gate valve is a wedge gate isolation valve with female threaded ends. It is used for fully opening or fully closing pipeline media, not for flow regulation.
What is the working principle?
The trapezoidal thread on stem converts handwheel rotation into vertical movement of wedge gate. Counter-clockwise rotation lifts gate to open; clockwise rotation pushes gate down to press against seats and shut off flow.
Pressure rating?
1000WOG (PN16), working pressure up to 16bar at room temperature.1000WOG (PN16)
What are the main product features?
Full bore design, low pressure drop. Bi-directional sealing, no flow direction limit. Wedge gate for reliable sealing. Compact structure, threaded connection for easy installation. Must work full open or full closed only.
Pressure rating?
PN16 / 200WOG.
Bidirectional sealing?
Yes, bi-directional sealing. No inlet/outlet direction limit during installation.
Do you do 100% pressure test?
Yes. Every valve will pass air leakage test before packing.
MOQ?
Small MOQ available. Mixed sizes in one order acceptable.
Packing method?
Each valve in plastic bag, then small box, carton outside. Wooden pallet optional.
Can I put my own logo /custom label?
Yes, OEM & ODM available. Logo on handle or body.
What is difference between threaded gate valve and threaded ball valve?
– Threaded Gate Valve: Multi-turn operation, full bore, low pressure drop, for less frequent on/off. **Not for throttling.**
– Threaded Ball Valve: Quarter turn 90°, quick open & close, suitable for frequent switching
What’s the warranty?
12 months warranty against manufacturing defect. Not cover damage from wrong operation.
How to prevent leakage?
Do not over-tighten thread when installation; avoid impact. Regular inspection for long time service.
“What sizes are available?
The general product specifications list sizes from 1/2” to 4” (DN15–DN100). The accompanying size chart currently covers DN15–DN50; please verify the specific dimensions for the size you require.
What materials can I choose from?
The original bill of materials includes 201, CF8, and CF8M valve body options.
What are the temperature and pressure limits?
The accompanying general data indicates an operating pressure of 1.6 MPa and an operating temperature range of 0°C to 120°C. Suitability of this product for specific fluids and temperatures must be confirmed separately.
Can this valve be used for throttling?
The accompanying operating instructions recommend against leaving the valve in a partially open position for extended periods, as high-velocity fluid may erode the seat.
What is the lead time for orders?
We maintain a stock of 5,000 BSPT valves for standard orders; other thread types require customization, with a production capacity of 50,000 units within 15 days.
What is the product quality like? Is there a warranty period?
Every valve undergoes rigorous quality inspection, including testing of the material, threads, seals, and valve body, and is backed by a one-year warranty within the normal operating range of the medium.”””
Threaded Gate valve
“The manual threaded gate valve is a manually operated valve specifically designed to fully open or fully close industrial piping systems to shut off the flow of media. It is classified as a shut-off valve and must not be used for throttling or regulating flow. This product is manufactured from 201/CF8/CF8M stainless steel and is available with a variety of threaded connection options.
Model: Manual Threaded Gate Valve
Material: 201/CF8/CF8M Stainless Steel
Nominal Diameter: 1/2“–4” (DN15–DN100)
Rated Pressure: 1.6 MPa (PN16)
Connection Type: Threaded Connection (BSPT / BSPP / NPT)”
