3″ – 5000 PSI – BW API 6A DM Mud Gate Valve

3″ – 5000 PSI – BW API 6A DM Mud Gate Valve

Technical Datasheet

1. Product Overview

The DM Mud Gate Valve is a high-performance gate valve specifically designed for drilling mud systems in the oil and gas industry. It is designed, manufactured, and tested in strict accordance with API Spec 6A. The valve features a Rising Stem structure and Bi-directional Sealing. The gate is connected to the stem via a T-slot connection, allowing the gate to float within the slot and achieve pressure-energized sealing against the resilient seat inserts on both sides, ensuring bi-directional flow shut-off.

Applications: Drilling mud circulation systems, wellhead equipment, manifolds and flowlines, crude oil and sour gas pipelines, and drilling chemical handling.

2. Design Standards & Codes

3. Technical Specifications

4. API 6A Rating Specifications

5. Materials of Construction

5.1 Body Material

• Body & Bonnet: Forged Steel
• Material Class Availability: DD, EE, FF (NACE MR0175 compliant for sour service)

5.2 Trim Materials

• Gate: Carbon Steel (Electroless Nickel Plated), Monel, Aluminum Bronze, or Nitrided Stainless Steel.
• Seat: Resilient seal (NBR, CNBR, or HNBR) bonded/embedded in a Stainless Steel or Carbon Steel retainer ring.
• Stem: Alloy Steel.

5.3 Seals

• Primary Seal: Metal-to-Rubber (Resilient Seat Insert).
• Body/Bonnet Seal: Metal-to-Metal.

5.4 Material Standards Compliance

• Pressure-containing parts are integral forgings.
• Materials selected per NACE MR0175/ISO 15156 for resistance to sulfide stress cracking.
• Optional hard-facing overlay on sealing surfaces for erosion/corrosion resistance.

6. Design Features

7. Pressure-Temperature Ratings

Rated Working Pressure: 5000 PSI (35 MPa).
Temperature Class U: -18°C to 121°C (-0°F to 250°F).

8. Inspection & Testing

8.1 Pressure Testing

Performed in accordance with API 6A:

• Shell Test: Hydrostatic test at 1.5 x Rated Working Pressure.
• Seat Test: Hydrostatic and Gas seat tests (as applicable per PSL).

8.2 Non-Destructive Examination (NDE)

Based on PSL requirements:

• PSL 1: MT or PT.
• PSL 2: MT/PT, sample hardness testing.
• PSL 3/3G: Full volumetric (UT/RT) and full hardness survey.

8.3 Performance Verification (PR2)

Type testing includes:

• Hydrostatic shell test.
• Gas seat test.
• 160 cycle dynamic test (Open/Close) at ambient and rated temperature.
• Torque measurement verification.

9. End Connection Details

10. Dimensions & Weight (Reference)

Note: Specific dimensions and weights for the 3″ size are subject to final manufacturer design and certified drawings.

11. Optional Configurations

• Actuation: Manual (Std), Gear Operator, Hydraulic, Pneumatic.
• End Connections: BW, Flanged (RTJ/RF), NPT Threaded, Hammer Union.
• Operation Assist: Ball Screw Stem (Reduces torque for high-pressure service).
• Position Indicator: Sight Lens (Protects stem threads from mud/debris).
• Material Upgrade: Higher material classes (EE, FF, HH) for extreme sour/corrosive environments.

12. Industry Applications

• Drilling Mud Circulating Systems
• Wellhead & Christmas Tree Assemblies
• High Pressure Manifolds & Flowlines
• Sour Crude Oil & Gas Transmission
• Drilling Chemical Injection Systems

13. Ordering Information

Please specify the following when ordering:

• Description: 3″ – 5000 PSI – BW API 6A DM Mud Gate Valve
• Size: 3″ (DN 80)
• Pressure Rating: 5000 PSI
• End Connection: Butt Weld (BW)
• PSL: PSL 1 / PSL 2 / PSL 3
• Material Class: DD / EE / FF
• Temperature Class: U (or as required)
• PR: PR1 / PR2
• Operation: Manual Handwheel
• Quantity

14. Quality & Compliance Certifications

• API Spec 6A Monogram License
• API Q1 Quality System Registration
• ISO 9001:2015 Certified
• NACE MR0175 / ISO 15156 Compliance (Sour Service)

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.