DEMCO DM Series 4 in. (100 mm) Full Port Gate Valve rated for 7500 PSI WP. Features 4.00″ (102 mm) valve seat ID, dual end connections (Weld/Flanged), API 6A compliance, and multiple material/seal configurations.
DEMCO DM Series Gate Valves 7500 PSI WP – 4 in. (100 mm) Full Port
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Available on backorder
Available on backorder
Description
DEMCO DM Series 4 in. Full Port Gate Valve – 7500 PSI WP
The DEMCO DM Series 4 in. (100 mm) Full Port Gate Valve is the largest bore size in the DM Series lineup, engineered for high-flow oilfield applications requiring maximum throughput with minimal pressure drop. With a full 4.00″ (102 mm) valve seat ID and a robust 7500 PSI working pressure rating, this gate valve is ideal for high-volume flowline systems, large-bore manifold installations, and heavy-duty production operations.
Manufactured in full compliance with API 6A, 17th Edition, the 4-inch full port gate valve offers dual end connection options — Weld End and Flanged End with API Ring BX-155 — providing flexibility for different piping configurations. The full port design ensures unrestricted flow, reducing turbulence and erosion while maximizing system efficiency.
Key Features & Benefits
- Full Port Design: 4.00″ (102 mm) valve seat ID provides maximum flow capacity with minimal pressure loss
- High Working Pressure: Rated for 7500 PSI WP, suitable for demanding upstream and production applications
- Dual End Connections: Available in Weld End and Flanged End (API Ring BX-155) configurations
- API 6A Compliant: Meets API 6A, 17th Edition standards for wellhead and Christmas tree equipment
- Multiple Material Options: Configurable with 410 SS or 17-4 PH SS stem and gate materials
- Flexible Sealing: Viton or HNBR seal elastomer options for different service conditions
- Three Testing Groups: Group 1, Group 2, and Group 3 hydrostatic test requirements available
Dimensional Data & Weights
| Dimension | 4 in. (100 mm) FP – 7500 WP |
|---|---|
| A – Weld End | 16.00″ (406 mm) |
| A – Flanged End | 26.38″ (670 mm) |
| Valve Seat ID | 4.00″ (102 mm) |
| Overall Height | 27.54″ (700 mm) |
| Overall Width | 20.00″ (508 mm) DIA |
| Bonnet Height | 4.40″ (112 mm) |
| Number of Handle Turns (Open to Closed) | 21.36 |
| Weight – Weld End | 310 lb (141 kg) |
| Weight – Flanged End | 475 lb (215 kg) |
Flanged End Specifications
| Specification | Value |
|---|---|
| API Ring Number | BX-155 |
| Flange ID | 4.06″ (103 mm) |
| Flange OD | 12.44″ (316 mm) |
| Flange Bolts (Qty – Size) | 8 – 1 1/8″ |
Hydrostatic Test Requirements
| Test Group | Shell Test | Seat Test | Additional Requirements |
|---|---|---|---|
| Group 1 | 11,250 PSI for 3 minutes | 7,500 PSI for 3 minutes, each side | Material traceability on body and bonnet |
| Group 2 | 11,250 PSI for 3 min, drop to 0, 11,250 PSI for 15 min (charted) | 7,500 PSI for 3 min, drop to 0, 7,500 PSI for 15 min (charted) | Impact tests at or below -50°F (-46°C) on body, bonnet, stem, housing, packing retainer, and bolting. Surface NDE on body, bonnet, and stem. |
| Group 3 | Same as Group 2 | Same as Group 2 | Same as Group 2 plus volumetric NDE on body and bonnet |
Assembly Part Number Configuration
| Code Position | Description | Options |
|---|---|---|
| 1st Digit | End Connection | 5 – Weld End | 7 – Flanged End |
| 2nd Digit | Body Configuration | 5 – Weld | 7 – Flanged |
| 3rd Digit | Stem Material | 7 – 410 SS | 8 – 17-4 PH SS |
| 4th Digit | Gate/Wear Ring Material | 2 – Steel/Steel | 7 – 17-4 PH SS/410 SS |
| 5th Digit | Seat Ring Material | 1 – 410 SS |
| 6th Digit | Seat/Seal Elastomer | 2 – Viton/Viton | 4 – HNBR/HNBR |
Example: J0XXXXX = Assembly Base Number for 4 in. Full Port Weld End Gate Valve
Seal & Elastomer Options
- Viton (FKM): Standard high-performance fluoroelastomer suitable for most hydrocarbon service. Temperature range: -20°F to 400°F (-29°C to 204°C).
- HNBR (Hydrogenated Nitrile): Enhanced abrasion and chemical resistance for sour gas and abrasive media applications. Temperature range: -40°F to 300°F (-40°C to 149°C).
Typical Applications
- High-volume flowline and manifold systems
- Large-bore production wellheads and Christmas trees
- High-pressure water injection and gas lift systems
- Fracturing and stimulation flowback operations
- Offshore platform piping and process systems
- Refinery and petrochemical process lines
Why Choose DEMCO DM Series Gate Valves?
DEMCO gate valves are trusted by operators worldwide for their proven reliability, consistent performance, and API-certified quality. The DM Series features a time-tested expanding gate design that provides positive mechanical seal engagement, bi-directional flow capability, and long service life even in the harshest oilfield environments. With comprehensive material and seal options, plus three testing group levels, DEMCO gate valves can be configured to meet virtually any operational requirement.
Additional information
| Working Pressure | 7500 PSI WP |
|---|---|
| Valve Size | 4 in. (100 mm) |
| Port Type | Full Port |
| Valve Seat ID | 4.00" (102 mm) |
| End Connection | Weld End / Flanged End (API Ring BX-155) |
| Standard | API 6A, 17th Edition |
| Material Options | 410 SS / 17-4 PH SS |
| Seal Options | Viton / HNBR |
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