20000 Psi Slab Gate Valve for Oilfield Wellheads

• Overview
• Technical Specifications
• Dimensions
• Certifications
• After Sales Service
• Company Profile
• Project References
• FAQ

Overview

Basic Info.

Model NO.	DAUME-SGV Series
Type	Straight-through
Material	Steel
Connection Form	Flange
Pressure	High Pressure
Actuator	Manual
Seal Surface	Parallel Gate Valve
Thread Position of Valve Rod	Outside Gate Valve
Usage	Isolation / Shut-off
Standard	API Spec 6A
Application	Industrial Usage
Design Standard	API Spec 6A
Product Type	Manual Slab Gate Valve
Nominal Bore	3-1/16 Inch
Working Pressure	20, 000 Psi
Psl Level	Psl 3
Pr Level	Pr1
Material Class	FF-10
Temperature Class	Lu
Operation	Manual Gearbox
Sealing Structure	Bidirectional Metal Sealing
Applicable Media	Oil, Gas and Drilling Mud
Transport Package	Standard Export Wooden Case
Specification	3-1/16", 20, 000 psi, PSL 3, PR1, FF-10
Trademark	D+R
Origin	China

Product Description

API 6A High Pressure Manual Slab Gate ValveThe PFA78-140 manual slab gate valve is designed for high-pressure oil and gas wellhead isolation applications.The configuration shown on this page features a 3-1/16 inch nominal bore, 20,000 psi maximum working pressure, PSL 3, PR1, FF-10 material class and manual gearbox operation.Its through-conduit slab-gate structure, bidirectional metal sealing system and wear-resistant sealing surfaces support reliable shut-off under demanding oilfield operating conditions.Product at a Glance
API Spec 6A design
3-1/16 inch nominal bore
20,000 psi maximum working pressure
PSL 3 / PR1
FF-10 material class
Manual gearbox operation

Key Product Advantages1. High-Pressure Wellhead Configuration
The valve is designed for a maximum working pressure of 20,000 psi and is intended for critical isolation positions in oil and gas wellhead and high-pressure production systems.2. Through-Conduit Flow Passage
When the valve is fully open, the flow passage provides a clear bore suitable for efficient fluid transportation and reduced flow resistance.This valve is designed for fully open or fully closed service and must not be used for long-term throttling or flow regulation.3. Bidirectional Metal Sealing
The slab gate and valve seats form a bidirectional metal sealing structure, supporting isolation under pressure from either flow direction.Final sealing performance shall be confirmed according to the approved technical specification and inspection requirements.4. Wear-Resistant Sealing Surfaces
The gate and seat sealing surfaces use WC hard-alloy treatment to improve resistance to wear, erosion and corrosion in demanding oilfield media.5. Gearbox-Assisted Manual Operation
The manual gearbox reduces the operating force required for opening and closing. The operating direction is clearly identified for convenient field use.7. Secondary Sealant Injection
A secondary sealant injection device is provided to support emergency sealing around critical sealing areas when required.
Sealant injection must only be performed after the valve has been safely isolated and depressurized, using suitable high-pressure injection equipment.Technical Specifications

Product Name	Manual Slab Gate Valve
Model	PFA78-140
Drawing Number	F22050000
Design Standard	API Spec 6A
Nominal Bore	3-1/16 inch
Maximum Working Pressure	20,000 psi
Product Specification Level	PSL 3
Performance Requirement	PR1
Material Class	FF-10
Temperature Class	LU
Temperature Range	-46°C to +121°C
Operating Method	Manual Gearbox
Sealing Structure	Bidirectional Metal Sealing
Connection	API 6A Flanged Connection
Ring Gasket	BX154
Gate and Seat Surface	WC Hard Alloy
Applicable Media	Gas, Oil and Drilling Mud
Full Open/Close Turns	Approximately 68.6 Turns
Reference Overall Size	Approximately 775 × 460 × 891 mm

Note: The overall dimensions shown above are reference product dimensions and are not wooden-case packing dimensions.Dimensions

Note: The dimensions above correspond to the illustrated configuration. Final dimensions and interface details shall be confirmed according to the approved project drawing.

Typical ApplicationsThis electric choke valve is suitable for:
• Oil and gas wellhead equipment
• High-pressure natural gas production systems
• Wellhead and production manifolds
• Oilfield gathering pipelines
• Sour-gas service, subject to material confirmation
• Drilling and production equipment
• High-pressure pipeline isolation
• Critical shut-off applications

Certifications

After Sales ServiceWarranty: 12 months from the date of shipment, covering defects in materials and workmanship under normal operating conditions.
Lifetime Technical Support: Free remote technical consultation is available throughout the product's service life.
Installation & Commissioning: Remote guidance is available for actuator installation, electrical wiring, parameter setting, testing and commissioning.
Spare Parts Support: Spare parts and replacement components can be supplied according to the actuator model and actual service requirements.
On-Site Service: On-site technical service is available upon request. Travel, accommodation and service costs will be quoted separately.Company Profile

DAUME (Shanghai) Control Technology Co., Ltd. specializes in providing professional valve automation solutions, focusing on intelligent electric actuators and industrial valve control systems.
With its headquarters in Shanghai and manufacturing base in Zhengzhou, DAUME integrates technology development, production, quality control and global service to provide reliable automation solutions for customers worldwide.
The Zhengzhou manufacturing facility is responsible for product assembly, performance testing and quality inspection of electric actuators, ensuring stable performance and consistent product quality before delivery.
Our product range includes intelligent electric actuators, permanent magnet brushless DC electric actuators and customized valve automation solutions. The products are widely used in water treatment, oil & gas, chemical, power generation, metallurgy and industrial automation industries.
Supported by professional engineering experience and strict quality management, DAUME is committed to delivering efficient, reliable and intelligent valve automation solutions for global customers.

DAUME integrates production, assembly, performance testing and quality inspection to ensure consistent product quality and reliable actuator performance.

Exhibiton

Project References

FAQ1. Are you a manufacturer or a trading company?
We are a manufacturer specializing in electric actuators and valve automation solutions, integrating product development, manufacturing, assembly, testing and quality inspection.

2. What information is required for actuator selection?
Please provide the valve type and size, required torque, operating mode, power supply, opening/closing time, mounting flange, output connection, control and feedback signals, and working environment. If the valve torque is unavailable, please provide the valve size, medium, operating pressure or maximum differential pressure so that we can assist with selection.

3. Can you provide samples?
Sample units are available for evaluation, subject to the selected model and technical configuration. Sample and shipping costs will be confirmed separately.

4. Can you provide OEM or ODM services?
Yes. Nameplates, voltage, control functions, feedback signals, mounting interfaces and other configurations can be customized according to confirmed technical requirements.

5. What is your lead time?
Our standard lead time is approximately 30 days after technical confirmation and receipt of the advance payment. If the required model is in stock, it can normally be ready for shipment within approximately 15 days. The final lead time depends on the order quantity and technical configuration.

6. How are the products packed?
Each actuator is securely protected against moisture and impact. Export cartons or wooden cases are used according to the product size, order quantity and transportation requirements.

7. How do you ensure product quality?
Each actuator undergoes inspection and functional testing before delivery, including appearance inspection, electrical testing, operating tests and other checks required by the selected configuration.