{"id":9125,"date":"2022-06-16T07:11:56","date_gmt":"2022-06-15T23:11:56","guid":{"rendered":"https:\/\/ancor.biz\/?post_type=product&#038;p=9125"},"modified":"2025-08-18T12:05:47","modified_gmt":"2025-08-18T04:05:47","slug":"dwyer-series-ap-diaphragm-operated-pressure-switch","status":"publish","type":"product","link":"https:\/\/ancor.biz\/index.php\/product\/dwyer-series-ap-diaphragm-operated-pressure-switch\/","title":{"rendered":"DWYER Series AP Diaphragm Operated Pressure Switch"},"content":{"rendered":"<h1>Series AP Diaphragm Operated Pressure Switch, Visible Setpoint Adjustment, Compact<\/h1>\n<p>&nbsp;<\/p>\n<p>Reliable and convenient, the\u00a0<a href=\"https:\/\/ancor.biz\/index.php\/product-category\/brand\/dwyer-instruments-brand\/\">DWYER<\/a> Series AP Diaphragm Operated Pressure Switch is a compact switch for instrument air or other low pressure applications. Visible set point and external adjustment add convenience. DWYER Series AP Diaphragm Operated Pressure Switch used on air, non-corrosive gas or liquid service compatible with wetted parts. Units are available in weather-proof and explosion-proof housing.<\/p>\n<h2><\/h2>\n<h2 class=\"sub_heading\">Product Applications<\/h2>\n<ul class=\"list-details inline product_feature\">\n<li>Low pressure applications<\/li>\n<li>Instrument air<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<section id=\"features\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\" role=\"tabpanel\" aria-labelledby=\"ui-id-4\" aria-expanded=\"true\" aria-hidden=\"false\">\n<h1 class=\"tab-heading\">Features<\/h1>\n<ul>\n<li>Explosion-proof and weatherproof housing provides device protection for outdoor use or harsh environment operation<\/li>\n<li>External switch set point adjustment reduces set-up time<\/li>\n<\/ul>\n<\/section>\n<p>&nbsp;<\/p>\n<section id=\"specs\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\" role=\"tabpanel\" aria-labelledby=\"ui-id-3\" aria-expanded=\"true\" aria-hidden=\"false\">\n<h1 class=\"tab-heading\">Specifications<\/h1>\n<ul class=\"list-specs lined\">\n<li>Wetted Materials: Nylon reinforced Buna-N and steel. PTFE and 316 SS optional.<\/li>\n<li class=\"title\">Temperature Limits: -30 to 150\u00b0F (-35 to 66\u00b0C).<\/li>\n<li class=\"title\">Pressure Limit: See Catalog page.<\/li>\n<li class=\"title\">Enclosure Rating: General purpose. Weatherproof and explosion-proof optional.<\/li>\n<li class=\"title\">Switch Type: SPDT mercury switch or SPDT snap switch. Other switch types available.<\/li>\n<li class=\"title\">Electrical Rating: Mercury switch: 4 A @ 120 VAC\/DC, 2 A @ 240 VAC\/DC. Snap switch: 15 A @ 120 VAC, 8 A @ 240 VAC, 0.5 A @ 120 VDC, 0.25 A @ 240 VDC.<\/li>\n<li class=\"title\">Electrical Connections: Screw terminal.<\/li>\n<li class=\"title\">Conduit Connection: 7\/8&#8243; (22.23 mm) hole for 1\/2&#8243; (12.7 mm) conduit hub.<\/li>\n<li class=\"title\">Process Connection: 1\/4&#8243; female NPT.<\/li>\n<li class=\"title\">Mounting Orientation: Vertical for mercury switch models, any position for snap switch models.<\/li>\n<li class=\"title\">Set Point Adjustment: External screw.<\/li>\n<li class=\"title\">Weight: General Purpose: 2 lb (0.9 kg).<\/li>\n<li class=\"title\">Deadband: See Catalog page.<\/li>\n<li class=\"title\">Agency Approvals: FM, UL. For FM consult factory.<\/li>\n<\/ul>\n<\/section>\n<p>&nbsp;<\/p>\n<h2 class=\"tab-heading\">Models &amp; Ordering<\/h2>\n<table class=\"product-table\">\n<tbody>\n<tr>\n<th class=\"model-number\" nowrap=\"nowrap\" width=\"\">Model<\/th>\n<th class=\"description\" width=\"\">Description<\/th>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">AP-153-33<\/td>\n<td class=\"description\" width=\"\">Diaphragm operated pressure switch, range 10&#8243; vac-50&#8243; w.c. (2.5-12.4 kPa), SPDT mercury switch, low deadband 5&#8243; w.c. (1.2 kPa), high deadband 6&#8243; w.c. (1.49 kPa), max. pressure 15 psig (1.03 bar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">AP-153-37<\/td>\n<td class=\"description\" width=\"\">Diaphragm operated pressure switch, range 1-30 psig (.07-2.1 bar), SPDT mercury switch, low deadband 0.4 psig (0.03 bar), high deadband 0.75 psig (0.05 bar), max. pressure 60 psig (4.14 bar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">AP-153-39<\/td>\n<td class=\"description\" width=\"\">Diaphragm operated pressure switch, range 10-125 psig (.69-8.6 bar), SPDT mercury switch, low deadband 2 psig (0.14 bar), high deadband 6 psig (0.41 bar), max. pressure 160 psig (11.0 bar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">AP-7021-153-33<\/td>\n<td class=\"description\" width=\"\">Diaphragm operated pressure switch, range 10&#8243; vac-50&#8243; w.c. (2.5-12.4 kPa), SPDT snap switch, low deadband 8&#8243; w.c. (2.0 kPa), high deadband 10&#8243; w.c. (2.49 kPa), max. pressure 15 psig (1.03 bar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">AP-7021-153-37<\/td>\n<td class=\"description\" width=\"\">Diaphragm operated pressure switch, range 1-30 psig (.07-2.1 bar), SPDT snap switch, low deadband 0.75 psig (0.05 bar), high deadband 1.5 psig (0.10 bar), max. pressure 60 psig (4.14 bar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">AP-7021-153-39<\/td>\n<td class=\"description\" width=\"\">Diaphragm operated pressure switch, range 10-125 psig (.69-8.6 bar), SPDT snap switch, low deadband 3 psig (0.21 bar), high deadband 7 psig (0.48 bar), max. pressure 160 psig (11.0 bar).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Series AP Diaphragm Operated Pressure Switch, Visible Setpoint Adjustment, Compact &nbsp; Reliable and convenient, the\u00a0DWYER Series AP Diaphragm Operated Pressure Switch is a compact switch for instrument air or other low pressure applications. Visible set point and external adjustment add convenience. DWYER Series AP Diaphragm Operated Pressure Switch used on air, non-corrosive gas or liquid &#8230; <a title=\"DWYER Series AP Diaphragm Operated Pressure Switch\" class=\"read-more\" href=\"https:\/\/ancor.biz\/index.php\/product\/dwyer-series-ap-diaphragm-operated-pressure-switch\/\" aria-label=\"More on DWYER Series AP Diaphragm Operated Pressure Switch\">Read more<\/a><\/p>\n","protected":false},"featured_media":9126,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":""},"class_list":["post-9125","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-brand","product_cat-dwyer-switch-vacuum","product_cat-dwyer-instruments-brand","product_cat-dwyer-instruments-dwyer-omega","product_cat-dwyer-omega","product_cat-pressure-switch-dwyer-instruments-dwyer-omega","product_cat-switch-vacuum","product_cat-pressure-switch","product_cat-single-pressure-dwyer-switch-vacuum","product_cat-switch","product_tag-ap-153-33","product_tag-ap-153-37","product_tag-ap-153-39","product_tag-ap-7021-153-33","product_tag-ap-7021-153-37","product_tag-ap-7021-153-39","product_tag-dwyer-series-ap","product_tag-dwyer-series-ap-diaphragm-pressure-switch","sales-flash-overlay","woocommerce-text-align-center","woocommerce-image-align-center","do-quantity-buttons"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - 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