Post Tagged with: "valve"

Control Valve Accessories

Control Valve Accessories

Basic, Instrumentations 31 Tháng Bảy, 2014 at 8:44 sáng

Positioners Pneumatically operated valves depend on a positioner to take an input signal from a process controller and convert it to valve travel. These instruments are available in three configurations: 1. Pneumatic Positioners—A pneumatic signal (usually 3-15 psig) is supplied to the positioner. The positioner translates this to a required valve position and supplies the valve actuator with the requiredRead More

Valve Actuators

Valve Actuators

Basic, Instrumentations, Mechanical, Technology 24 Tháng Sáu, 2014 at 4:59 chiều

Introduction Through themselves, valves cannot control a process. Manual valves need an operator to position them to control a process variable. Valves that must be operated remotely and automatically need special devices to move them. These devices are known as actuators. Types of actuators include manual handwheel, manual lever, electrical motor, pneumatic, solenoid, hydraulic piston, and self-actuated. All actuators exceptRead More

Types of the valve

Types of the valve

Basic, Instrumentations, Mechanical, Technology 23 Tháng Sáu, 2014 at 6:32 chiều

This tutorial briefly describes the basic components of different types of linear and rotary action control valves available for use in steam and water systems. A basic control system would normally consist of the following components: Hướng dẫn này mô tả các thành phần cơ bản và sự khác nhau của các van điều khiển kiểu tịnh tiến và kiểuRead More