{"id":680,"date":"2021-02-28T16:30:52","date_gmt":"2021-02-28T13:00:52","guid":{"rendered":"https:\/\/www.ramanpsr.com\/?p=680"},"modified":"2021-02-28T16:30:52","modified_gmt":"2021-02-28T13:00:52","slug":"control-valves","status":"publish","type":"post","link":"https:\/\/www.ramanpsr.com\/fa\/products\/control-valves\/","title":{"rendered":"Control Valves"},"content":{"rendered":"<p>[vc_row rtl_reverse=&#8221;yes&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_single_image image=&#8221;681&#8243; alignment=&#8221;center&#8221; animation_type=&#8221;flash&#8221; label=&#8221;&#8221;][vc_column_text]<\/p>\n<p dir=\"ltr\" style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\"><strong>Control<\/strong> valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a &#8220;setpoint&#8221; to a &#8220;process variable&#8221; whose value is provided by sensors that monitor changes in such conditions.[1] Control Valve is also termed as the Final Control <strong>Element<\/strong>.<\/span><\/p>\n<p dir=\"ltr\" style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">The opening or closing of control valves is usually done automatically by electrical, hydraulic or pneumatic actuators. Positioners are used to control the opening or closing of the actuator based on electric, or pneumatic signals. These control signals, traditionally based on 3-15psi (0.2-1.0bar), more common now are 4-20mA signals for industry, 0-10V for HVAC systems, and the introduction of &#8220;Smart&#8221; systems, HART, Fieldbus Foundation, and Profibus being the more common protocols. Some of the control valve available are Reverse Double-Ported Globe-Style Valve Body, Three-Way Valve with Balanced Valve Plug, Flanged Angle-Style Control Valve Body, Valve Body with Cage-Style Trim, Balanced Valve Plug, and Soft Seat.<\/span><\/p>\n<p dir=\"ltr\" style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">A control valve consists of three main parts in which each part exist in several types and designs:<\/span><\/p>\n<ul dir=\"ltr\" style=\"text-align: left; list-style-type: square;\">\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Valve&#8217;s actuator<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Valve&#8217;s positioner<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Valve&#8217;s body<\/span><\/li>\n<\/ul>\n<p>&nbsp;[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243; 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\u0628\u062e\u062a<\/h4>\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"m-b-sm color-body\">\u06a9\u0627\u0631\u0634\u0646\u0627\u0633 \u0641\u0631\u0648\u0634 Piping<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a><!-- Global link end -->\n\n\t\t\t\t\t\t<span class=\"thumb-info-caption\">\n\t\t\t\t\t\t\t\t\t<span class=\"thumb-info-caption-text p-t-none\">\n\t\t\t\t\t<p>\u062a\u0644\u0641\u0646: 02133903903<\/p>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\n\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t<\/div>\t<\/div>\n\n\t\n\t<\/div>[\/vc_tta_section][\/vc_tta_accordion][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1604332277038{padding-bottom: 20px !important;}&#8221;][vc_column][vc_single_image image=&#8221;683&#8243; img_size=&#8221;large&#8221; alignment=&#8221;center&#8221; onclick=&#8221;link_image&#8221; lightbox=&#8221;yes&#8221; animation_type=&#8221;flash&#8221; label=&#8221;&#8221;][vc_text_separator title=&#8221;Types of control valve bodies&#8221; color=&#8221;custom&#8221; border_width=&#8221;10&#8243; css_animation=&#8221;bounceIn&#8221; element=&#8221;h3&#8243; css=&#8221;.vc_custom_1614516982831{padding-top: 15px !important;padding-bottom: 15px !important;}&#8221; accent_color=&#8221;#0088cc&#8221;][vc_column_text]<\/p>\n<p dir=\"ltr\" style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">The most common and versatile types of control valves are sliding-stem globe and angle valves. Their popularity derives from rugged construction and the many options available that make them suitable for a variety of process applications, including severe service. Control valve bodies may be categorized as below:<\/span><\/p>\n<ul dir=\"ltr\">\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Angle Valves<\/span>\n<ul style=\"text-align: left;\">\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Cage-style valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">DiskStack style valve bodies<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Angle seat piston valves<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Globe Valve<\/span>\n<ul style=\"text-align: left;\">\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Single-port valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Balanced-plug cage-style valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">High capacity, cage-guided valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Port-guided single-port valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Double-ported valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Three-way valve bodies<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Diaphragm Valves<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Rotary valves<\/span>\n<ul style=\"text-align: left;\">\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Butterfly valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">V-notch ball control valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Eccentric-disk control valve bodies<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Eccentric-plug control valve bodies<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Sliding cylinder valves<\/span>\n<ul style=\"text-align: left;\">\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Directional control valve<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Spool valve<\/span><\/li>\n<li><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Piston Valve<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Air-operated valves<\/span>\n<ul>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Air-operated valve<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Relay valve<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Air-operated pinch valve<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row rtl_reverse=&#8221;yes&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_single_image image=&#8221;681&#8243; alignment=&#8221;center&#8221; animation_type=&#8221;flash&#8221; label=&#8221;&#8221;][vc_column_text] Control valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a &#8220;setpoint&#8221; to a &#8220;process variable&#8221; whose value is provided by sensors that monitor changes in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":685,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"cybocfi_hide_featured_image":"yes"},"categories":[10,11],"tags":[],"featured_image_src":{"landsacpe":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/02\/globecontrolvalve-1140x445.jpg",1140,445,true],"list":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/02\/globecontrolvalve-463x348.jpg",463,348,true],"medium":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/02\/globecontrolvalve-225x300.jpg",225,300,true],"full":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/02\/globecontrolvalve.jpg",1200,1600,false]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.5 (Yoast SEO v19.10) - 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