{"id":655,"date":"2008-04-22T13:53:20","date_gmt":"2008-04-22T17:53:20","guid":{"rendered":"http:\/\/www.solinst.com\/onthelevel-news\/?p=655"},"modified":"2017-05-04T15:58:22","modified_gmt":"2017-05-04T19:58:22","slug":"bladder-pump-double-valve-pump","status":"publish","type":"post","link":"https:\/\/www.solinst.com\/onthelevel-news\/groundwater-sampling\/low-flow-groundwater-sampling\/bladder-pump-double-valve-pump\/","title":{"rendered":"Bladder Pump Or Double Valve Pump"},"content":{"rendered":"

Can you tell the difference?
\nWhich is Right for You?<\/h1>\n

\"solinst Both have their advantages.\u00a0Bladder Pumps<\/a><\/strong>\u00a0have low flow capability and ensure that no drive gas comes into contact with sample water, making them ideal, and approved by regulators\u00a0worldwide for VOC sampling. Select a Bladder Pump for higher regulator acceptance and lower flow rates.\u00a0Double Valve Pumps<\/a><\/strong>\u00a0provide greater flow rates, as well as low flow capabilities, better performance in silty water, and are low maintenance, with no bladder to replace and fewer parts to decontaminate. Select a Double Valve Pump for faster purging, and operation in harsher environments.<\/p>\n\n\n\n
\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\nBladder Pump<\/strong><\/td>\nDouble Valve Pump<\/strong><\/td>\n<\/tr>\n
 <\/td>\n<\/tr>\n
\n

Pump Material<\/p>\n<\/td>\n

\n

Pump Diameter<\/p>\n<\/td>\n<\/tr>\n

PVC<\/td>\n1.66″ (42 mm)<\/td>\n1.66\u201d (42 mm)<\/td>\n<\/tr>\n
316 Stainless Steel<\/td>\n1″ and 1.66″
\n(25 mm and 42 mm)<\/td>\n		5\/8″ and 1.66″
\n(16 mm and 42 mm)<\/td>\n<\/tr>\n
PTFE<\/td>\n<\/td>\n3\/8\u201d (9.5 mm)<\/td>\n<\/tr>\n
 <\/td>\n<\/tr>\n
\n

Pump Material<\/p>\n<\/td>\n

\n

Maximum Depth<\/p>\n<\/td>\n<\/tr>\n

PVC<\/td>\n100 ft (30 m)*<\/td>\n100 ft (30 m)<\/td>\n<\/tr>\n
316 Stainless Steel<\/td>\n500 ft (150 m)*<\/td>\n500 ft (150 m)<\/td>\n<\/tr>\n
 <\/td>\n<\/tr>\n
\n

Pump Diameter<\/p>\n<\/td>\n

\n

Maximum Flow Rate<\/p>\n<\/td>\n<\/tr>\n

3\/8″ (9.5 mm)<\/td>\n<\/td>\n250 (ml\/min)<\/td>\n<\/tr>\n
5\/8″ (16 mm)<\/td>\n<\/td>\n800 (ml\/min)<\/td>\n<\/tr>\n
1″ (25 mm)<\/td>\n1000 (ml\/min)<\/td>\n<\/td>\n<\/tr>\n
1.66″ (42 mm)<\/td>\n1500 (ml\/min)<\/td>\n3500 (ml\/min)<\/td>\n<\/tr>\n
* Deeper with Drop Tube. (See tip<\/a><\/strong>)<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Can you tell the difference? Which is Right for You? Both have their advantages.\u00a0Bladder Pumps\u00a0have low flow capability and ensure that no drive gas comes into contact with sample water, making them ideal, and approved by regulators\u00a0worldwide for VOC sampling. Select a Bladder Pump for higher regulator acceptance and lower flow rates.\u00a0Double Valve Pumps\u00a0provide greater… Continue Reading »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":824,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[450],"tags":[458,462],"class_list":["post-655","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-low-flow-groundwater-sampling","tag-408-double-valve-pump","tag-407-bladder-pump"],"yoast_head":"\nBladder Pump or Double Valve Pump<\/title>\n<meta name=\"description\" content=\"Both have their advantages. 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