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

Nominal Size 3″ (DN 80)
Rated Working Pressure 5000 PSI (35 MPa / 345 bar)
End Connection Butt Weld (BW)
Valve Type Mud Gate Valve
Structure Rising Stem
Operation Manual (Hand Wheel Operated)
Sealing Type Metal-to-Rubber / Metal-to-Metal
Temperature Range P-U: -20°F to 250°F (-29°C to 121°C)
Service Media Drilling Mud, Water, Natural Gas, Oil, Sour Gas (H₂S/CO₂)

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

Technical Datasheet

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.

Design Standards & Codes

Item	Standard / Code
Design, Manufacturing, Testing	API Spec 6A
Sour Service Design	NACE MR0175 / ISO 15156
Body / Bonnet	Forged Steel
Quality System	API Q1 Compliant

Technical Specifications

المعلمة	مواصفة
الحجم الاسمي	3″ (DN 80)
Rated Working Pressure	5000 PSI (35 MPa / 345 bar)
End Connection	لحام بعقب (BW)
نوع الصمام	Mud Gate Valve
بناء	Rising Stem
عملية	Manual (Hand Wheel Operated)
Sealing Type	Metal-to-Rubber / Metal-to-Metal
نطاق درجة الحرارة	P-U: -20°F to 250°F (-29°C to 121°C)
Service Media	Drilling Mud, Water, Natural Gas, Oil, Sour Gas (H₂S/CO₂)

API 6A Rating Specifications

Rating Class	Available Range	وصف
PSL (Product Spec Level)	PSL 1, PSL 2, PSL 3	Defines testing, inspection, and NDE requirements
PR (Performance Requirement)	PR1, PR2	PR1: 2 cycles test; PR2: 160 full pressure/temperature cycles test
Material Class	AA, BB, CC, DD, EE, FF	EE and above suitable for sour service; Ring groove overlay required for > EE
Temperature Class	K, L, P, R, S, T, U, V	U class covers -18°C to 121°C (-0°F to 250°F)

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

بوابة: Carbon Steel (Electroless Nickel Plated), Monel, Aluminum Bronze, or Nitrided Stainless Steel.
مقعد: Resilient seal (NBR, CNBR, or HNBR) bonded/embedded in a Stainless Steel or Carbon Steel retainer ring.
ينبع: 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.

Design Features

Feature	وصف
Double-Start Thread	Fast open/close operation with low torque requirement.
Rising Stem	Provides clear visual indication of gate position.
Bi-Directional Sealing	Floating gate design allows pressure-energized upstream/downstream seal.
Inline Repairable	Bonnet assembly can be removed quickly without removing valve body from pipeline.
Metal-to-Rubber Sealing	Proprietary seat design ensures drop-tight shut-off.
Low Operating Torque	Optional ball screw design available.

Pressure-Temperature Ratings

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

Temp. Class	Min. Operating Temp.	Max. Operating Temp.
K	-60°C (-75°F)	82°C (180°F)
L	-46°C (-50°F)	82°C (180°F)
P	-29°C (-20°F)	82°C (180°F)
U	-18°C (-0°F)	121°C (250°F)
V	2°C (35°F)	121°C (250°F)

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.

End Connection Details

المعلمة	مواصفة
Connection Type	لحام بعقب (BW)
الحجم الاسمي	3″ (DN 80)
Schedule / Wall Thickness	XXH (Extra Extra Heavy)
Other Available Ends	Flanged (RF/RTJ), Threaded (NPT), Hammer Union

Dimensions & Weight (Reference)

المعلمة	Reference Value
Face-to-Face Dimension	Per API 6A Standard
Center to Top (Open)	Consult Manufacturer Drawing
Hand Wheel Diameter	Consult Manufacturer Drawing
Approximate Weight	Consult Manufacturer Drawing

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

Optional Configurations

التشغيل: 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.

تطبيقات الصناعة

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

Ordering Information

Please specify the following when ordering:

وصف: 3″ – 5000 PSI – BW API 6A DM Mud Gate Valve
مقاس: 3″ (DN 80)
تصنيف الضغط: 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
عملية: Manual Handwheel
Quantity

Quality & Compliance Certifications

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

ضمان:

تلتزم شركة سافي فالفز بتقديم منتجات عالية الجودة وخدمة ما بعد البيع مريحة. نضمن لصماماتنا عمر خدمة لا يقل عن ١٢ شهرًا، نوفر خلالها جميع قطع الغيار اللازمة وتعليمات الصيانة المفصلة مجانًا. خلال فترة الضمان، في حال حدوث أي ضرر غير بشري، نستبدل المكونات مجانًا ونقدم دعمًا فنيًا احترافيًا. بعد انتهاء الضمان، يدفع العميل فقط تكلفة قطع الغيار، مع الاستفادة من خدمات الصيانة المخفضة. هدفنا هو مساعدة عملائنا على خفض تكاليف التشغيل وتحسين كفاءة الإنتاج من خلال جودة موثوقة ودعم شامل لما بعد البيع. سواءً للاستفسارات الفنية أو احتياجات الصيانة، سيستجيب فريق خبرائنا على الفور لضمان الحفاظ على الأداء الأمثل لنظام صماماتك في جميع الأوقات.

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