Search results with tag "Control valves"
Check Valves, Flow Control and Priority ... - Sun Hydraulics
www.sunhydraulics.comSun check valves provide non-modulating on/off control, and Sun flow control valves provide flow modulation for control of metering and flow regulation in a variety of forms: Two port cartridges for check and flow control valves. placed ahead of an actuator or control device, these valves act Three port cartridges for priority flow control valves.
D660 Series Servo-Proportional Control Valves with ...
www.moog.comproven to provide reliable control of including injection and blow molding equipment, die casting machines, presses, heavy industry equipment, paper and lumber processing and other applications. D660 SERIES SERVO-PROPORTIONAL CONTROL VALVES The D660 Series proportional flow control valves are throttle valves for 2, 3, 4 and 5-way applications.
Product Bulletin Fisher ET-EAT-ETR Sliding Stem Control Valves
www.emerson.comControl Valves Fisher ET, EAT, and ETR general-purpose control valves (figures 2, 3, and 4) are used for throttling or on-off control of a wide variety of liquids and gases. All three valve designs have single ports, balanced valve plugs, and cage guiding. Metal-to-PTFE seating for stringent shutoff requirements is standard in all valves except
Chapter 5 - Schemes of directional control valves - ISO ...
www.hafner-pneumatik.com2/2-way valves 2/2-way valves are for opening and closing. They block the medium or let it pass. 2/2-way valves can be either normally closed or normally open. In the scheme below two 2/2-way solenoid valves (S1 and S2) are used to control a cylinder with spring return (single acting) C1. Without actuation both solenoid valves are closed.
TRAILER CONTROL SYSTEMS - hendrickson-intl.com
www.hendrickson-intl.comHeight Control Valves Height Control Valves Trailer air suspension systems require precise air flow management. Using an Advanced Shear-Seal® design to ensure accurate air flow, Hendrickson Height Control Valves (HCV) deliver superior performance and durability. u Precise, highly repeatable dead band u High air flow and a proportional response
Product Bulletin Fisher ES EAS Sliding Stem Control Valves
www.emerson.comFisher™ ES and EAS Sliding-Stem Control Valves Fisher ES and EAS general-purpose control valves (figures 1 and 2) are used for throttling or on-off control of a wide variety of liquids and gases. Both valve designs have single ports, unbalanced valve plugs, and cage guiding. In both designs, metal-to-metal seating is standard for
Thermostatic Control Valve - AMOT
www.amot.comThermostatic Control Valve - Model B Datasheet B Thermostatic Control Valve 0321rev19 Page 3 Overview AMOT Model B thermostatic valves are available in a wide selection of sizes and settings to fill a multitude of fluid temperature control requirements. These valves may be mounted in any position and use the proven expanding wax principle to ...
Characterized Control Valves (CCV) Installation Instructions
www.belimo.com3-way valves must be piped correctly. They can be mixing or diverting. Mixing is the preferred piping arrangement. The A-port must be piped to the coil to maintain proper control. The B-port restricts fl ow by 30% of A-port value. The BELIMO Characterized Control Valve is a CONTROL valve, not a manual valve adapted for actuation.
Product Bulletin Fisher ED EAD EDR Sliding Stem Control …
www.emerson.comFisher™ ED, EAD, and EDR Sliding-Stem Control Valves Fisher ED, EAD, and EDR single-port control valves shown in figures 1, 2, and 3 have balanced valve plugs, cage guiding, and metal-to-metal seating for all general applications over a wide range of process pressure drops and temperatures. These general purpose, sliding-stem valves are used ...
Catalog HY14-2500/US Directional Control Valves Technical ...
www.parker.comSeries D41VW valves are piloted by a D1VW valve. The valves can be ordered with position control. The minimum pilot pressure must be ensured for all operating conditions of the directional valve. Additionally spools with a P to T connection in the de-energized position need an external pressure supply (external inlet) or an integral check valve.
Masoneilan Condensed Catalog - Baker Hughes
dam.bakerhughes.comRotary Control Valves More than 1 million 35002 Series Camflex™ valves have been successfully installed in a variety of process industries and applications. Today’s Masoneilan Camflex II valve continues to offer dependability through a concept that remains a standard of excellence for eccentric-plug rotary globe control valves. The
GENERAL SPECIFICATION FOR FIRE SERVICE …
www.archsd.gov.hkB3.15 Cabinets For Control Valve Sets and Sprinkler Inlets B3.16 Tanks and Pumps B3.17 Controls and Alarm Indications B3.18 Water Flow Alarm Switches B3.19 Subsidiary Stop Valves B3.20 Sprinkler Control Valves Sets B3.21 Dry Pipe Installation B3.22 Pre-Action Installation B3.23 Recycling System B3.24 Deluge Installation
Dynamic Behavior and Stability of Closed-Loop Control Systems
sites.chemengr.ucsb.eduControl Valve As discussed in Section 9.2, control valves are usually designed so that the flow rate through the valve is a nearly linear function of the signal to the valve actuator. Therefore, a first-order transfer function usually provides an adequate model for operation of an installed valve in the vicinity of a nominal steady state. Thus, we
Technical GS-2046 GS-2646 GS-3246 Service Manual
manuals.gogenielift.comcontrol valves are located. To protect from over-pressurization of the hydraulic system, the pump is provided with a pressure relief valve. Activating a machine function is accomplished by actuating or moving a switch and/or control handle, which sends voltage to the ECM. The ECM then sends the signal to the appropriate directional control valve.
Understanding Choked Flow in Fisher Valves
www.emerson.comUnderstanding Choked Flow in Fisher™ Valves ... with many negative phenomena that affect control valves. ... Fisher is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric ...
Hydraulic Training Manual - Main Filter Inc.
www.mainfilter.comE Directional Valve F Flow Control Valve G Right-angle Check Valve H Cylinder. 1. All circuit design must start with the job you want to ... when the cross section of the pipe changes size.. Principles of Flow ... like pressure valves and flow control valves. In this condition pressure has a difficult time passing to the
GER-4193A - SPEEDTRONIC Mark VI Turbine Control System
www.ge.comMark VI control systems are available in ... bine with three coil servos for control valves and 2 out of 3 relays for critical outputs such as hydraulic trip solenoids. Other forms of output ... has one, fixed, box-type terminal block. It can accept one 3.0 mm2 (#12AWG) ...
Product Bulletin YD and YS Valves September 2020 Fisher YD ...
www.emerson.comFisher™ YD and YS Control Valves Fisher YD and YS three-way cage-guided valves are designed for throttling or flow-switching (on-off) service, and are available in the following constructions: YD (Balanced)—For general converging (flow-mixing) and diverging (flow-splitting) service. Available in standard and high-temperature versions (see ...
Standard for NFPA 13 and 13R Fire Sprinkler Systems
www.marysvillefiredistrict.orgprovided with an automatic sprinkler system. Where there is a change-of- ... structures shall be fed by a minimum of 6” ductile iron underground fire main ... CONTROL VALVES Main riser control valves shall be in sprinkler riser rooms and have tamper supervision.
Chapter 11: Valves and Actuators with the NAMUR-interface
www.hafner-pneumatik.comDirectional control valve for control of pneuma tic rotary actuators. Further important elements can be: • Switch-box to feed the position of the process valve back to a central command, • Manual override – clutch for emergencies or • Positioner, replacing the switch -box and mostly including the control valve. 2. Pneumatic rotary actuators
Pressure relief valve, pilot operated - Kanflu
www.kanflu.comPressure control valves of types DB and DBW are pilot operat-ed pressure relief valves. They are used for the limitation (DB) or limitation and solenoid operated unloading (DBW) of the op-erating pressure. Pressure relief valves (DB) basically consist of main valve (1) with main spool insert (3) and pilot valve (2) with pressure ad-justment ...
Flow Control Valves - Dole - R.C. Worst
www.rcworst.comFlow Control Valves - Dole NEW OLD Flow Inlet/ Part Number (GPM) Outlet List PriceGY8.0 DV8-3/4MXF 8.0 3/4”mipt x fipt $ 63.63 GY9.0 DV9-3/4MXF 9.0 3/4”mipt x fipt 63.63
SECTIONAL DIRECTIONAL CONTROL VALVES
www.walvoil.comCONTROL VALVES. SDS100 2 DBT001E Simple, compact and heavy duty designed sectional valve from 1 to 12 sections for open and closed centre hydraulic systems. H Fitted with a main pressure relief valve and a load check valve on every working section H Available with parallel, tandem or series circuit.
HANDBOOK FOR CONTROL VALVE SIZING - Parcol
www.parcol.comThe correct sizing and selection of a control valve must be based on the full knowledge of the process. 0. NORMATIVE REFERENCES - IEC 60534-2-1, Industrial process control valves – Flow capacity – Sizing under installed conditions - IEC 60534-2 …
Type 3241-1 and Type 3241-7 Pneumatic Control Valves …
www.samsongroup.com– Actuator stem extends (fail-close) The valve closes when the supply air fails. – Actuator stem retracts (fail-open) The valve opens when the supply air fails. Fig. 5 to Fig. 8 show configuration examples. Fig. 5: Type 3241-1 Control Valve, NPS ½ to 6, with Type 3271 Actuator Fig. 6: Type 3241 Valve, NPS 8 to 12
Fisher Sliding Stem Valve Selection Guide
www.emerson.comTypical Fisher Sliding-Stem Control Valves X1175 W8861-2 easy-e™ GX TBX Steam Conditioning Valve X0165 A broad range of Fisher valves, sizes, and materials ... Balanced or unbalanced trim Cage-retained seat Sizes ED: DN25 through 200 and NPS 1 through 30 ... (IEC 60534-4 and ANSI/FCI 70-2) Class II (standard) Class III, IV (optional) Class IV ...
Proportional and Servo Valve Technology - Moog Inc.
www.moog.comcontrol valve, or the poppet in a pressure relief valve. The spool or poppet is offset by a spring. Therefore, the force input by the solenoid assembly is opposed by the force of the spring. Many proportional directional control valves, such as the valve illustrated in Figure 1, have two solenoid assemblies, one solenoid being located at each ...
ELECTRONIC PEDALS - Tectran - Driven to be Better
tectran.comAIR CONTROL VALVES www.tectran.com In USA: Tectran Mfg. Inc. 330 Greene St. Buffalo NY 14206-1025 800.776.5549 Fax 716.894.9623 In Canada: Tectran Co. 2400 Anson Dr. Mississauga ON L5S 1G2 905.678.7700 Fax 905.678.6210
Fire Protection Systems (Inspection & Testing)
www.scdf.gov.sgb. Exit & directional sign Test a. Detectors b. Manual call points c. Fire hosereel d. Smoke cut-off switch in AHU e. Fire pump (sprinkler/ring main system f. Diesel pump (fire) g. Sprinkler control valves (water proving test) h. Pressurisation staircase (air velocity test) i. Private fire hydrant PHASE III - INDIVIDUAL SYSTEM 39
Micro Trims April 2019 Fisher Micro Trims for Globe and ...
www.emerson.comES EAS HPAS DA 1, 1-1/2, and 2 1 and 2 1 and 2 1 0.001 ‐ 3.4 0.001 - 10.49 0.01 ‐ 7.8 ... size EH and HP control valves. Figure 4. Micro‐Flat/Form Trim FLOW W8284 ... and 2 Fisher ES valve bodies and is designed for very low flow applications where cavitation is a concern.
Proven solutions to optimize your system with higher ...
www.emerson.comThe Fisher Control valves are your ideal solution for a wide range of process industry applications, providing users with high performance and reliability. • Large temperature & pressure coverage • General to severe service needs • Low emissions packing • Easy to maintain
Control Valve Sizing Theory, Cavitation, Flashing
www.bray.comcontrol valve or control valve trim to select. • Most control valve manufacturers provide Cv tables by size for their valves which provide the Cv value for every 10% of opening. • The Rangeability of a control valve is defined by dividing the maximum controllable Cv by the minimum controllable Cv for that size and type of valve.
Control Valve Sizing - CTi Controltech
cti-ct.comValtek control valve flow capacity (C v) is based upon the industry standard, ANSI/ISA S75.01. This standard and the corresponding measuring standards contain Equations used to predict the flow of compressible and incompressible fluids in control valves. Slightly differ-ent forms of the basic Equation are used for liquids and gases.
A guide to selecting the right hydraulic flow control valve
files.webtec.comcontrol valve in a system, the next step is to decide whether a simple throttle valve or a pressure compensated flow control valve will be required. A simple throttle valve is no more than a variable restrictor of some sort such as the needle valve shown in figure 5. Adjustment of the needle position varies the area through
Ethylene Production - Emerson
www.emerson.comThe Fisher control valve solution for the feed gas control valve is typically an easy‐e valve or GX valve. Because of the friction concerns mentioned and the desire to reduce emissions, use of Fisher ENVIRO‐SEAL graphite ULF packing is recommended. A spring‐and‐diaphragm actuator should also be used as they are proven to provide
Technical Specifications Rev. C - 02/2022 Masoneilan ...
dam.bakerhughes.comThe selection of a control valve is based on the required flowing quantity of the process. The control valve must be selected to operate under several different conditions. The maximum quantity that a valve should be required to pass is 10 to 15% above the specified maximum flow. The normal flow
Fisher EZ easy‐e Control Valve - Emerson Electric
www.emerson.comInstruction Manual D100401X012 EZ Valve August 2021 3 Installation WARNING Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal injury. Personal injury or equipment damage caused by sudden release of pressure may result if the valve assembly is installed
Chilled-Water System Decisions - Trane
www.trane.comrate and it will have a control valve. The reasons behind this guidance follow. Figure 1. Primary-secondary system bypass line, free of restrictions, sized the same as the largest chiller’s pipe, aim for a pressure drop equivalent to a pipe that is 8-10 pipe diameters long. secondary pumps with VSDs primary pumps chilled-water coling coils ...
MONOBLOCK DIRECTIONAL CONTROL VALVE
www.walvoil.comMain relief valve setting (bar) Description example: II 7. 2. 3. 5. 7. 8. 8. 2. Inlet reliaf options page 10 Standard setting is referred to 10 l/min flow. TYPE CODE DESCRIPTION SV XTAP526340 Valve blanking plug VMD10/1: direct differential pressure relief valve type K (standard) (KG2--80) 5KIT110112 Range 20 to 63 bar / 290 to 900 psi standard ...
Mechanical Properties of Glass Fibre Reinforced Polymer ...
www.ijser.orgHand Lay-Up Method . For the ease of production, a simple heating chamber was constructed. The heating chamber consists of the cylinder head, heating channel, control valve, and discharge trolley tray. The resin was loaded into the cylinder head and heated to its melting point at a temperature of about 169. o. C.
CONTROL VALVE HANDBOOK - Emerson Electric
www.emerson.comcontrol valve and instrumentation terminology. Chapter 2 develops the vital topic of control valve performance. Chapter 3 covers valve and actuator types. Chapter 4 describes digital valve controllers, analog positioners, boosters, and other control valve accessories. Chapter 5 is a comprehensive guide to selecting the best control valve for an
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