Valves valve loading

Taxonomy No. 4.3.3.2 Equipment Description PRESSURE - SAFETY RELIEF VALVES - SPRING-LOADED ... 

For reciprocating metering pumps, NPSHr is related to valve loading, as shown in Figure 32.52 ... 

Gas Process, Smalt Volume, Less Than 10 ft. of Pipe Between Control Valve and Load Valve Equal-Percentage... 

Figures 5a and 5b, respectively, show representative values for the incident shock and the leakage shock passing the blast valve. This loading was then used to analyze the ventilation ducting to assure no damage would occur.

Design of Pressure-Relief Valves Spring-Loaded Relief Valves... 

Valve Loading. The designer should be particularly careful in using low pressure rating valves with relatively heavy-walled pipe. The imposed moment caused by construction or by expansion may be beyond the structural capacity of the valve. For large-diameter piping, venturi ports are sometimes used on valves (particularly when motor operated). Also, standard valves one or two sizes... 

Figure 5.13 Multiport switching valves (a) loading sample loop and injecting sample onto the column (b) two loop sample injection system (c) four port valve for column or solvent switching...

Figure 6.16 External loop injection valves (a) load, and (b) inject.

A 100-mL HokeJ spun Monel vessel (rated for 5000 psi) prepassivated with either P2 or CIP and equipped with a Whitey stainless steel valve (SSD 1RM4) (Seattle Valve ) is loaded with 15 mmol (1.83 g) of Cr02p2 (by PVT techniques) using a well-constructed Monel or nickel metal vacuum line (prepassivated with CIF) and equipped with Whitey valves and Swagelok connections at - 196° (liquid N2). An excess of fluorine (Mathesoiifll) (120 mmol) is introduced into the Monel vessel by a pressure difference... 

To introduce samples into the flow path, the easiest way is the usage of a sample loop that is connected to an HPLC valve. After loading and switching, the loop is integrated into the flow path and the sample is delivered to the separation column. Today, this task is done by autosamplers that can temper samples and provide 24 hours of fully automated and reproducible sample injection. 

Fig.6J Schematic diagram of a FI dialysis system with sample circulation (valve in loading position). PI. P2 pumps DS, membrane dialyzer nested in sample loop A, acceptor stream R, reagent D, detector W, waste 111].

Figure 11.1 Alternative valve configurations loading pump (pump 1), analytical pump (pump 2), extraction column (column 1), analytical column (column 2), extraction solvent (M), extraction column wash solvent (W), analytical mobile phase (MP). Reversing the Pump2 and Column 2 connections will reverse the flow path in Column 1 during the drug transfer step, allowing solute enrichment at the head of Column 1. Reprinted from Ref 5 with permission of the American Chemical Society.

Fig. 5.6. Typical 6-port sample valve (a) load position (b) inject position.

Common carriers bear the fnimary responsibility for their cargoes. However, prudence and Responsible Care (Section 16.4.2.6) require a chlorine producer to be closely involved with all shipping agents and to share information and training resources. Mobile containers must be fabricated correctly to prevent or withstand damage. They require valves for loading and unloading these are particularly susceptible... 

Dynamic analysis for seismic and valve discharge loadings are performed to verify the design of the support configuration. 

Fressurizer Safety Valve Analysis - Loading Criteria and Methods of Analysis... 

Saturated Steam 1185, 1220, 1245 19x10 Total (20 Valves) Spring loaded 16 3... 

The SEC analysis of components separated according to the chemical composition under critical conditions maybe carried out after transferring of effluent from column under critical conditions into a SEC column. This procedure requires additional sample valve with loading loops plus the adjustment of flow velocity and column dimensions [106]. The procedure is known as two-dimensional separation (for references see [22,25]). A fully automated chromatographic system for two-dimensional separation was developed by Kilz et al. [ 106,177] and is commercially available [178]. On the other hand, a reinjection of analyzed fraction from column working at critical conditions into the additional SEC column is not necessary, when two different systems under critical conditions are found, i.e. one for each components of copolymer (using two different columns or two different eluents). Corresponding complementary LCCC systems may be selected from Table 1-3. In this case, parts of copolymer, which are not under CEEC, should be eluted in SEC modus. The distribution of molar mass of both components of copolymers may be then measured directly under critical conditions, as have been demonstrated in [47,67,78,80]. If necessary, LCCC maybe scaled up to preparative quantities [71]. 

EDCA C/PVC manufacturing Relief valve discharge Loading/unloading... 

Caps or plugs on sample valves, loading and unloading valves, and gauging device valves must be installed and wrench-tightened. Gauging devices must be securely in place and free of leaks. 

CG-7 Relief Valve Spring-loaded valve opens when pressure is excessive No Threaded onto cylinder... 

Safety/relief valve quencher load test evaluation for BWR Mark II and III containments, US Nuclear Regulatory Commission, 1982. 

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