VWR Accessories for Gas Regulators Outlet Diaphragm Valves Brass 6.4 Mm 1/4" Nptm To 6.4 Mm 1/4" Nptf. During the manufacturing process a special "Crane-Tape" is made that will accept the flow tube usually a mercury or stainless steel diaphragm valve and an opening across the gauge or a plug gauge. If a process must be stopped or stomped a release pin must be pushed down from the release pin to permit gas to be drawn off. A relief valve that can be operated locally by the user with hand or foot (no vacuum). A vacuum release valve that can be operated from the bench that is a clamp that opens the diaphragm valve by hand. A purgecock that must be manually operated. Specifications for VWR Accessories for Gas Regulators 9101225 Outlet Diaphragm Valves Brass 6.4 Mm (1/4") Nptm To 6.4 Mm (1/4") Nptf: Description: Brass 6.4 mm (1/4") NPTM to 6.4 mm (1/4") NPTF (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Harris Calorific products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Labware & Accessories with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for VWR Labware & Accessories. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the VWR Accessories for Gas Regulators Outlet Diaphragm Valves Brass 6.4 Mm (1/4") Nptm To 6.4 Mm (1/4") Nptf 9101225/ 82023-804 we carry a full complement of Labware & Accessories as well as other product offerings from Harris Calorific. We also carry a full line of VWR accessories to help meet your laboratory and scientific needs. For a complete selection of VWR Labware & Accessories please visit our Harris Calorific page. For more brand name Labware & Accessories please visit our Labware & Accessories store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. VWR Accessories for Gas Regulators 9101225 Outlet Diaphragm Valves Brass 6.4 Mm (1/4") Nptm To 6.4 Mm (1/4") Nptf