Ball valve with pneumatic hydraulic drive and manual backup for welding
The gas-liquid linkage control ball valve produced by RTV Ruitong Valve consists of a gas-liquid linkage actuator and a high-pressure ball valve. The power source of the gas-liquid linkage actuator is directly taken from high-pressure natural gas in the independent pipeline, which means that after installing the gas-liquid linkage actuator on the valve, the gas source from the valve body is used as the power to open and close the regulating valve. To avoid human contact with natural gas, natural gas is a gas with a wide variety of impurities, among which hydrogen sulfide is a highly toxic gas. It avoids human contact and can be directly collected. The gas collection interface designed by RTV Ruitong Valve Co., Ltd. is perfectly connected to the actuator. After filtering, natural gas is directly stored in the storage tank. By adopting integrated modules, high flow rate, and high-pressure design technology, fewer control components are subjected to high pressure, extending the life of seals, reducing piping, and reducing system leakage points, the overall safety of the equipment is improved. Hydraulic systems have advantages such as strong transmission rigidity, unsuitable compression, smooth transmission, and easy sealing. Gas has the advantage of a high compression ratio. The gas-liquid linkage actuator combines the advantages of gas and liquid perfectly through the conversion of gas-liquid transmission mode. High pressure gas enters the gas-liquid tank through the control system for conversion, and the hydraulic oil with equal pressure inside the tank is pressed into the corresponding hydraulic piston cylinder. At the same time, the hydraulic oil in the hydraulic piston cylinder flows back into another gas-liquid tank, and the piston action drives the actuator to drive the valve to achieve smooth opening or closing. The gas-liquid linkage actuator works stably and operates reliably. The full travel time of the actuator action can be adjusted by adjusting the flow rate of hydraulic oil.
Full welded ball valve, full bore welded ball valve Purpose:
1: Urban gas: gas output pipelines, main and branch supply pipelines, etc.
2: Centralized heating: Large scale heating equipment output pipelines, main pipelines, and branch pipelines.
3: Heat exchanger: opening and closing of pipelines and various circuits.
4: Steel plant: various fluid pipelines, waste gas selective discharge pipelines, gas and heat supply pipelines, fuel supply pipelines.
5: Various industrial equipment, various heat treatment pipelines, various industrial gas and heat pipelines.
Standard specifications for fully welded ball valves and full bore welded ball valves:
Size: DN15~1500
Pressure rating: ANSI 150lb~2500lb
Applicable temperature: -35~350 ℃
Valve body material: carbon steel, stainless steel, alloy steel
Internal material: carbon steel, stainless steel, alloy steel, special materials
Features of fully welded ball valve products:
The valve is full bore and has a fixed pivot structure.
The valve seat and valve stem are sealed twice, and the valve seat has an independent grease injection port.
Fixed ball cutoff and release function, equipped with dual piston effect valve seat, zero leakage.
The valve body adopts a fully welded type, which can extend the valve stem and be used underground.
Anti static, fire safe, and valve stem anti blowing function.
Long service life.
It is welded by forged steel. The forging materials are subjected to ultrasonic examination according to ASME nondestructive flaw detection requirements. The welding slope on the connection face is subjected to liquid penetration examination.
Corrosion Resistance And Sulfide Stress Resistance
Certain corrosion allowance is left for the body wall thickness. The carbon steel stem, fixed shaft, ball, seat and seat ring are subjected to chemical nickel plating according to ASTM B733 and B656. In addition, various corrosion resistance materials are available for users to select. According to customer requirements, the valve materials can be selected according to NACE MR 0175/ISO 15156 or NACE MR 0103, and strict quality control and quality inspection should be carried out during the manufacturing so as to fully meet the requirements in the standards and meet the service conditions in sulfurization environment.
Welding Of Transition Pipe
During the manufacturing of the fully welded pipeline ball valve, the transition pipe can e welded for the welding ends valve. The transition pipe can be supplied by users or by our company according to user requirements. Please indicate the transition pipe diameter and length A when placing orders.
Technical Specification
Normal Size Range: 2"-24" DN15 to DN600
Normal Pressure Rating: ANSI #150 to 900, PN10 Thru PN150
Material: Carbon Steel & Stainless Steel
Optional Locking Device or Stem Extension
Ends Connections: W.ExW.E, W.ExFLG
Optional Direct Mounting to ISO 5211
Full Port or Regular Bore
Double Block and Bleed
NACE MR-01-75
Standards compliance
Design and Manufacture: API 6D, ASME B16.34, EN12516, DIN3357-1
Face to face(end to end): ANSI B16.10,API 6D
Fire-safe: API 607,API 6FA
Butt welded end: ANSI B16.25
Test and inspection: API 598,API 6D
