{"id":12,"date":"2026-08-31T08:49:11","date_gmt":"2026-08-31T08:49:11","guid":{"rendered":"https:\/\/vas.co.th\/?page_id=12"},"modified":"2026-08-31T10:00:39","modified_gmt":"2026-08-31T10:00:39","slug":"main-types-of-water-pumps","status":"publish","type":"page","link":"https:\/\/vas.co.th\/?page_id=12","title":{"rendered":"Main Types of Water Pumps"},"content":{"rendered":"\n<div class=\"vas-page vas-knowledge-article\">\n<section class=\"vas-article-hero vas-section\">\n<div class=\"vas-container vas-article-shell\">\n<nav class=\"vas-breadcrumbs\" aria-label=\"Breadcrumb\"><a href=\"https:\/\/vas.co.th\/\">Home<\/a><span>\/<\/span><a href=\"https:\/\/vas.co.th\/?page_id=9\">Knowledge Center<\/a><span>\/<\/span><span aria-current=\"page\">Main Types of Water Pumps<\/span><\/nav>\n<p class=\"vas-eyebrow\">Water Pumps<\/p>\n<h1>Main Types of Water Pumps<\/h1>\n<p class=\"vas-lead\">Pump types are grouped by how they move water and the duties they are designed to handle. These broad families provide a useful starting point.<\/p>\n<\/div>\n<\/section>\n<section class=\"vas-section vas-section--white\">\n<div class=\"vas-container vas-article-shell\">\n<article class=\"vas-article-body\">\n<figure class=\"vas-subject-visual\"><figcaption>\n<p class=\"vas-eyebrow\">Physical comparison<\/p>\n<h2>Recognize the Main Pump Families<\/h2>\n<p>Each example shows a different pump construction or installation context. Final selection still depends on the required duty and water condition.<\/p>\n<\/figcaption><div class=\"vas-photo-comparison\">\n<article><img decoding=\"async\" src=\"https:\/\/vas.co.th\/wp-content\/plugins\/vas-site-prototype-plugin\/assets\/technical\/centrifugal%20pumps%20(main%20types%20of%20water%20pumps).png\" alt=\"Centrifugal water pump.\"><\/p>\n<h3>Centrifugal \/ Surface<\/h3>\n<p>Continuous-flow transfer, irrigation, circulation, and pressure duties.<\/p>\n<\/article>\n<article><img decoding=\"async\" src=\"https:\/\/vas.co.th\/wp-content\/plugins\/vas-site-prototype-plugin\/assets\/technical\/submersible-pump%20(main%20types%20of%20water%20pump).png\" alt=\"Submersible water pump.\"><\/p>\n<h3>Submersible \/ Drainage<\/h3>\n<p>Operates while submerged for drainage, tanks, wells, or sumps.<\/p>\n<\/article>\n<article><img decoding=\"async\" src=\"https:\/\/vas.co.th\/wp-content\/plugins\/vas-site-prototype-plugin\/assets\/technical\/positive-displacement-pump%20(main%20types%20of%20water%20pump).png\" alt=\"Positive-displacement pump.\"><\/p>\n<h3>Positive Displacement<\/h3>\n<p>Moves measured volumes for dosing, viscous liquids, or controlled flow.<\/p>\n<\/article>\n<article><img decoding=\"async\" src=\"https:\/\/vas.co.th\/wp-content\/plugins\/vas-site-prototype-plugin\/assets\/technical\/special-duty%20pump%20(main%20types%20of%20water%20pumps).png\" alt=\"Special-duty water pump.\"><\/p>\n<h3>Special-Duty Pumps<\/h3>\n<p>Purpose-built designs for solids, very high volume, or unusual processes.<\/p>\n<\/article>\n<\/div>\n<\/figure>\n<section class=\"vas-article-lessons\" aria-labelledby=\"vas-article-lessons-title\">\n<header>\n<p class=\"vas-eyebrow\">Key takeaways<\/p>\n<h2 id=\"vas-article-lessons-title\">What to Know<\/h2>\n<p>Scan the main ideas first. Open \u201cKey points\u201d only when you want the supporting details.<\/p>\n<\/header>\n<p class=\"vas-article-lessons__hint\">Swipe the cards to continue <span aria-hidden=\"true\">\u2192<\/span><\/p>\n<div class=\"vas-article-lessons__grid\" role=\"list\" aria-label=\"Article key takeaways\">\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">01<\/span><\/p>\n<h3>Centrifugal Pumps<\/h3>\n<p>The pictured centrifugal pump uses a rotating impeller inside a casing to produce continuous flow. This family is common where water is relatively clean and the duty requires steady transfer, circulation, or pressure.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>End-suction pumps for general transfer and process service<\/li>\n<li>Multistage pumps when higher pressure is required<\/li>\n<li>In-line pumps where a compact pipe-mounted arrangement is useful<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">02<\/span><\/p>\n<h3>Submersible Pumps<\/h3>\n<p>The motor and hydraulic section are sealed into a unit designed to operate below the liquid level. Submergence helps the inlet remain flooded and allows the pump to lift water from wells, tanks, pits, or sumps.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Drainage units may handle rainwater or lightly contaminated water<\/li>\n<li>Well pumps use a narrow construction for boreholes<\/li>\n<li>Wastewater versions require suitable solids passage and non-clogging hydraulics<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">03<\/span><\/p>\n<h3>Positive-Displacement Pumps<\/h3>\n<p>These pumps trap a defined volume and move it from inlet to outlet during each cycle. Flow is more directly related to operating speed than in a centrifugal pump, making the family useful for controlled flow or more viscous liquids.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Gear, screw, diaphragm, piston, and progressive-cavity designs serve different liquids<\/li>\n<li>A relief path is normally essential because pressure can rise rapidly against a closed outlet<\/li>\n<li>Clearances, viscosity, pulsation, and shear sensitivity must be reviewed<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">04<\/span><\/p>\n<h3>Special-Duty Pumps<\/h3>\n<p>The pictured special-duty category represents pumps designed around an unusual liquid or system requirement rather than a general clean-water duty.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Sewage and non-clog pumps provide wider solids passages<\/li>\n<li>Axial- and mixed-flow pumps move very large volumes at lower or moderate head<\/li>\n<li>Chemical, slurry, hygienic, and high-temperature duties require purpose-selected materials and construction<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<article class=\"vas-article-lesson\" role=\"listitem\"><span class=\"vas-article-lesson__number\">05<\/span><\/p>\n<h3>Choose the Family From the Duty<\/h3>\n<p>The appearance of a pump does not confirm that it suits an application. Selection must combine required flow and head with liquid condition, installation, controls, maintenance access, and manufacturer limits.<\/p>\n<details>\n<summary>Key points <span>3<\/span><\/summary>\n<ul>\n<li>Begin with the required flow and total head, not appearance alone<\/li>\n<li>Match construction and materials to the liquid and installation<\/li>\n<li>Confirm the final operating range against verified manufacturer data<\/li>\n<\/ul>\n<\/details>\n<\/article>\n<\/div>\n<\/section>\n<\/article>\n<aside class=\"vas-article-next\">\n<p class=\"vas-eyebrow\">Put it into practice<\/p>\n<h2>Discuss the Right Product for Your Needs<\/h2>\n<p>Use this guide as a starting point. Final selection should be confirmed against the actual system conditions and manufacturer specifications.<\/p>\n<div class=\"vas-actions\"><a class=\"vas-button\" href=\"https:\/\/vas.co.th\/?page_id=22\">Contact Us<\/a><a class=\"vas-button vas-button--secondary\" href=\"https:\/\/vas.co.th\/?page_id=7\">View Water Pumps<\/a><\/div>\n<p><a class=\"vas-text-link\" href=\"https:\/\/vas.co.th\/?page_id=9\">Back to the Knowledge Center <span class=\"vas-icon vas-icon--arrow-right \" aria-hidden=\"true\"><\/span><\/a><\/aside>\n<\/div>\n<\/section><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Home\/Knowledge Center\/Main Types of Water Pumps Water Pumps Main Types of Water Pumps Pump types are grouped by how they move water and the duties they are designed to handle. These broad families provide a useful starting point. Physical comparison Recognize the Main Pump Families Each example shows a different pump construction or installation context&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":9,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"hide","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"hide","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-12","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/12","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vas.co.th\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12"}],"version-history":[{"count":1,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/12\/revisions"}],"predecessor-version":[{"id":36,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/12\/revisions\/36"}],"up":[{"embeddable":true,"href":"https:\/\/vas.co.th\/index.php?rest_route=\/wp\/v2\/pages\/9"}],"wp:attachment":[{"href":"https:\/\/vas.co.th\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}