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Common Control Schematics

From Shafer Valve Company
 

 
A rapid loss of pipeline pressure creates a differential across the diaphragm in assembly (7) which causes the stem to move outward, and trips valve (8) closed. Vents the pilot of valve (19) and causes the operator to close.
Products & Services
Valve actuators mount on valves and, in response to a signal, move a valve to a desired position using an outside power source. Search by Specification | Learn more about Valve Actuators
Pneumatic valve actuators adjust valve position by converting air pressure into linear or rotary motion. Search by Specification | Learn more about Pneumatic Valve Actuators
Electrohydraulic valve actuators and hydraulic valve actuators convert fluid pressure supply pressure into motion. Search by Specification | Learn more about Electrohydraulic Valve Actuators and Hydraulic Valve Actuators
Product Announcements
Wilden Pump & Engineering, LLC - Wilden P1500 - 76 mm (3") Plastic Pump
Wilden's high capacity P1500 Advanced™ Series plastic pumps were specifically designed for maximum performance and efficiency. The bolted configuration of these pumps ensures total product... (read more)
Jordan Valve Group - Mark 95 Sanitary Back Pressure Regulator
The Mark 95 is available with a hard or soft seat and a variety of diaphragm and o-ring materials, making the valve well-suited for virtually any sterile back pressure application. (read more)
DFT Inc. - Severe Service Control Valves from DFT
The HI-100 product line from DFT features an in-line, through-ported, venturi flow shape. The seating element, a ball, is contained by a cage that positions it relative to the downstream seat by means... (read more)
EVSCO, Inc. - Next Generation Pneumatic Ball Valve Replacement
Elliptic and Elliptomatic Valves your Ball Valve Alternative offers Unique Flow Solutions and Superior Performance in Demanding OEM Applications for Manual, Pneumatic or Electric Actuated 2-Way... (read more)
DFT Inc. - Control Valve for High Maintenance Environments
Is your control valve budget being stressed due to high maintenance costs? Do you need better process control than your current valve offers? DFT has the answer. (read more)
Xomox Corporation - Tufline Servere Service Valves
YOU ARE ASSURED OF SUPERIOR SEALING IN HAZARDOUS APPLICATIONS, EVEN WITH EXTREME THERMAL CYCLING CONDITIONS. An exceptionally tight and continuous external seal is a must when processing hazardous... (read more)
Jordan Valve Group - Mark 80 Temperature Regulators
The Mark 80 Series is completely self-operated and requires no external power source or other expensive instrumentation to operate the valve. (read more)
Austin-Reed Corporation - Valves
Austin-Reed Corporation offers many different valve options for it's customers, depending on the service required and the customer's design criteria. Our valve product group is quite diversified,... (read more)
Topics of Interest
An actuator is the mechanism by which an agent acts upon an environment. The agent can be either an artificial intelligent agent or any other autonomous being. The common forms of actuators are... (Read More)
3.8 ACTUATORS An actuator is the mechanism by which an agent acts upon an environment. The agent can be either an artificial intelligent agent or any other autonomous being. The common forms of... (Read More)
5.3.2 Pneumatic Actuator Design The most commonly applied pneumatic actuator over the past 40 years has been the diaphragm actuator (Fig. 5.8). Most diaphragm actuators are designed for linear motion,... (Read More)
5.8.3 Air Springs Using a Volume Tank When the air volume inside an actuator is not large enough to drive the actuator to its failure position, an external volume tank is provided with the valve to... (Read More)
5.7.1 Introduction to Auxiliary Handwheels Occasionally manual operation of an actuated valve is preferred or required; therefore, an auxiliary handwheel is attached to the actuator to allow for... (Read More)
See more product announcements for Valve Actuators
Custom Valve Actuators, All Types

Custom Valve Actuators, All Types
Peter Paul Electronics Co., Inc.


1/4 Turn and Linear Double-Acting / Spring Return

1/4 Turn and Linear Double-Acting / Spring Return
Emerson Process Management, Valve Automation


EMERSON VALVE AUTOMATION - Who We Are

EMERSON VALVE AUTOMATION - Who We Are
Emerson Process Management, Valve Automation


11 See more product announcements for Valve Actuators