<\/span><\/a>with stainless steel and PTFE valves. A pump is connected directly to the stem of each port and dual-line polyethylene or PTFE tubing connects the pump to the wellhead manifold. <\/p>\nPump control units are simple to use. They have quick-connect couplings with only a single connection to the manifold required. Samples from all levels are easily and rapidly obtained. Purging from some or all levels simultaneously is accommodated by the multi-purge feature of the manifold. <\/p>\n
[\/et_pb_text][et_pb_button button_url=”https:\/\/www.solinst.com\/products\/multilevel-systems-and-remediation\/401-waterloo-multilevel-system\/get-quote.php” button_text=”Get Quote” button_alignment=”center” admin_label=”401 get quote button” _builder_version=”4.27.2″ _module_preset=”default” custom_button=”on” button_text_size=”24px” button_text_color=”#FFFFFF” button_bg_color=”#ff8500″ button_bg_enable_image=”off” button_border_color=”#ff8500″ button_border_radius=”20px” button_font=”|600|||||||” button_icon=”||divi||400″ custom_margin=”20px||||false|false” custom_padding=”6px|47px|6px|47px|false|false” global_module=”3368″ saved_tabs=”all” global_colors_info=”{}”][\/et_pb_button][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” width=”100%” custom_padding=”30px||||false|false” global_colors_info=”{}”]<\/p>\n
Low-Flow Purging and Sampling<\/h2>\n
Purge volumes are very small due to the small annular space and tubing diameters used in the system. Consequently, even though flows are low, sampling is rapid, especially with dedicated pumps when all zones can be purged simultaneously. <\/p>\n
Dedicated Bladder and Double Valve Pumps (DVP), as well as a portable DVP, are ideal for use when low-flow sampling and purging techniques are desired.<\/p>\n
[\/et_pb_text][et_pb_image src=”https:\/\/www.solinst.com\/wp-content\/uploads\/2024\/11\/407-bladder-pump-408-double-valve-pump.webp” alt=”solinst model 407 bladder pump and 408 double valve pump for narrow-diameter groundwater sampling” title_text=”Solinst Model 407 Bladder Pump and 408 Double Valve Pump for Narrow-Diameter Groundwater Sampling” align=”center” _builder_version=”4.27.2″ _module_preset=”default” module_alignment=”center” custom_margin=”30px||||false|false” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” custom_margin=”10px||||false|false” global_colors_info=”{}”]<\/p>\n
Model 407 Bladder Pump and 408 Double Valve Pump<\/em><\/p>\n[\/et_pb_text][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”3_4″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”RGBA(255,255,255,0)” custom_padding=”|||0px|false|false” custom_css_free_form=”width: 68%!important;||margin-right: 2%!important;” global_colors_info=”{}” background__hover_enabled=”on|hover” background_color__hover=”” background_enable_color__hover=”off”][et_pb_image src=”https:\/\/www.solinst.com\/wp-content\/uploads\/2024\/11\/401-taking-groundwater-samples.webp” alt=”taking groundwater samples and pressure transducer readings from a solinst 401 waterloo multilevel multi-purge manifold at ground surface” title_text=”Taking Groundwater Samples and Pressure Transducer Readings from a Solinst 401 Waterloo Multilevel Multi-Purge Manifold at Ground Surface” align=”center” _builder_version=”4.27.2″ _module_preset=”default” width=”100%” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″][\/et_pb_image][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=”4.27.4″ _module_preset=”3676f7e6-7b83-4698-94ce-2cc9fa9ae43d” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″][et_pb_column_inner saved_specialty_column_type=”3_4″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_text admin_label=”research article” _builder_version=”4.27.4″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n
Flexible Groundwater Sampler<\/h2>\n
The Micro Double Valve Pump (Micro DVP) provides high-quality samples, uses coaxial PFAS-free PTFE tubing, and is small enough to fit in 1\/2″ (13 mm) ID tubing. The unique combination of flexibility and size make the pump ideal for sampling at depth in small flexible tubes. <\/p>\n
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Model 408M Micro Double Valve Pump<\/em><\/p>\n[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner admin_label=”Mobile Nav Related Items” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column_inner saved_specialty_column_type=”3_4″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][dsm_menu title=”Related Products” menu_id=”46″ submenu_collapse=”on” menu_link_text_color=”#000000″ active_link_color=”#000000″ menu_link_text_active_color=”#000000″ menu_link_text_visited_color=”#000000″ list_style_type=”none” disabled_on=”off|off|on” admin_label=”401 Related Products Mobile” _builder_version=”4.27.4″ _module_preset=”default” header_font=”|600|||||||” header_text_align=”left” header_text_color=”#000000″ header_font_size=”20px” menu_font_size=”16px” sub_menu_text_color=”#727272″ background_color=”#fcfcfc” custom_padding=”10px|10px|10px|10px|false|false” sticky_limit_bottom=”body” sticky_position_tablet=”none” sticky_position_phone=”none” sticky_position_last_edited=”on|tablet” border_width_all=”1px” border_color_all=”#e0e0e0″ global_colors_info=”{}” active_link_color__hover_enabled=”on|hover” active_link_color__hover=”#d1d1d1″][\/dsm_menu][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Adobe Analytics Code” _builder_version=”4.27.0″ _module_preset=”default” custom_padding=”||4px|||” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_code admin_label=”AA Code for this page” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]