Gate Valve Stems - Pumps, Valves, Piping and Fittings
Replacement stems for marine gate valves used in seawater, ballast, bilge, fire-main, cooling-water and general piping systems. Stems transmit handwheel or actuator torque to open and close the valve gate.
ProShipWorks provides end-to-end support to source and supply Gate Valve Stems for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Gate Valve Stems |
|---|---|
| Product Category | Pumps, Valves, Piping and Fittings |
| Product Reference | 673 |
| Brands / Manufacturers | KSB, Velan, Crane, KITZ, AVK |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Rising or non-rising stem configurations |
| 2. Available with threaded, keyed or integral gate connections |
| 3. Materials selected for seawater and corrosion resistance |
| 4. Compatible with manual handwheels or valve actuators |
| 5. Replacement dimensions must match the original valve |
Applications of Gate Valve Stems
| Application |
|---|
| 1. Ballast, bilge and fire-main piping |
| 2. Seawater cooling and general service systems |
| 3. Cargo, fuel, freshwater and utility piping |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| OS&Y rising-stem gate valve replacement stem | |
| Non-rising-stem gate valve replacement stem | |
| Bolted-bonnet gate valve replacement stem |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| General | Common stem material | Stainless steel, bronze or nickel-aluminium bronze, subject to valve design | — |
| General | Stem type | Rising or non-rising | — |
| General | Thread form | Manufacturer-specific trapezoidal or Acme-type valve thread | — |
| General | Connection | Threaded, keyed or integral connection to the gate | — |
| General | Size compatibility | Must correspond to the original valve nominal size, pressure class and manufacturer | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | Applicable standards may include EN 1171 for cast-iron gate valves, API 600 or API 602 for applicable industrial steel gate valves, and ISO 5208 for valve pressure testing. The replacement stem itself normally follows the original valve manufacturer's specifications. |
|---|---|
| Class Approval | Marine approval is generally granted for the complete valve assembly and system, not an interchangeable stem alone. Where required, verify approval and material documentation with DNV, ABS, Lloyd's Register, Bureau Veritas or ClassNK. |
Installation, Maintenance & Safety Information
| Installation Notes | Identify the valve manufacturer, model, size, pressure rating, stem type and dimensions before ordering. Isolate, drain and depressurize the line, remove the handwheel or actuator, inspect the bonnet and gate connection, lubricate compatible threads, and confirm full opening and closing travel after installation. |
|---|---|
| Maintenance Tips | Inspect exposed stems for corrosion, pitting, bending and thread wear. Keep threads clean and lubricated with a lubricant compatible with the service medium and valve materials. Check packing or stem seals for leakage and operate the valve periodically where permitted. |
| Safety Notes | Lock out and tag out the valve and associated equipment before work. Confirm the piping is isolated, depressurized, drained and safe from hazardous fluids. Use correct lifting methods and never operate a seized valve with excessive force or an extension bar. |
Request a Quote for Gate Valve Stems
Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.
- Vessel name and IMO number
- ETA / vessel schedule
- Berth or vessel location
- Required quantity
- Preferred delivery window
- Shipping agent contact details
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