![]() Solders containing lead at concentrations of greater than 0.2% are banned for potable water systems by the 1986 amendment to the Federal Safe Drinking Water Act (SDWA). Solder alloys listed in Section 1 of Table 1 Solder Compositions in ASTM B32, Standard Specification for Solder Metal, can be used to join copper tube and fittings in potable water systems. For continuous operation at temperatures exceeding 250☏, or where the highest joint strength is required, brazing filler metals should be used (see Table 14.4a). For higher pressures, or where greater joint strength is required, 95-5 tin-antimony solder and alloys E and HB can be used. The 50-50 tin-lead solder is suitable for moderate pressures and temperatures. Rated internal working pressures for solder joints made with copper tube using 50-50 tin-lead solder (ASTM B32 Alloy Sn50), 95-5 tin-antimony solder (ASTM B32 Alloy Sb5), and several lead-free solders (ASTM B32 Alloy E and Alloy HB) are listed in Tables 14.3a-e. In such cases, the stresses caused by a temperature change are usually insignificant. However, this may not be necessary when a tube length is short or when an expansion loop is used in a long tube run. Consideration should also be given to the stresses on joints caused by thermal expansion and contraction. The selection of a solder depends primarily on the operating pressure and temperature of the system. Flux acts as a wetting agent and, when properly applied, permits uniform spreading of the molten solder over the surfaces to be joined. We set it to 1 and use it to determine if the visitor has restarted their browser.Soldered joints depend on capillary action drawing free-flowing molten solder into the gap between the fitting and the tube. ![]() Whenever HubSpot changes the session cookie, this cookie is also set. ![]() It contains the domain, viewCount (increments each pageView in a session), and session start timestamp This is used to determine if we should increment the session number and timestamps in the _hstc cookie. This cookie is passed to HubSpot on form submission and used when de-duplicating contacts This cookie is used for to keep track of a visitor's identity. It contains the domain, utk (see below), initial timestamp (first visit), last timestamp (last visit), current timestamp (this visit), and session number (increments for each subsequent session) Other possible values indicate opt-out, inflight request or an error retrieving a Client ID from AMP Client ID service If you have linked your Google Analytics and AdWords accounts, AdWords website conversion tags will read this cookie unless you opt-out.Ĭontains a token that can be used to retrieve a Client ID from AMP Client ID service. If Google Analytics is deployed via Google Tag Manager, this cookie will be named _dc_gtm_Ĭontains campaign related information for the user. 10 or 20), and whether or not you wish to have Google’s SafeSearch filter turned on. English), how many search results you wish to have shown per page (e.g. ![]() Registers a unique ID that is used to generate statistical data on how the visitor uses the website.Ĭookie contains a unique ID Google uses to remember your preferences and other information, such as your preferred language (e.g. Diversity & Inclusion Employee Resource Group.
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