Valve adapter

Figure 6 Schematic diagrams of atypical high-pressure SF-CL systems based on special mixing modes (a) system based on conventional propelling and stopping syringe and (b) system based on liquid chromatographic (LC) pumps and stopping the flow before the mixer (M). V, six-ports valve. (Adapted from Refs. 33 and 34.)...

Two graduated dropping funnels of 500-ml. capacity equipped with pressure-equalizing tubes and small diameter tips to allow two solutions to be added in fine streams were used. They were also equipped with screw-in type plungers with Teflon fluorocarbon tips to allow fine adjustment of the flow rates. The checkers utilized standard 500-ml. dropping funnels and two needle valve adapters shown in Figure 1. 

Figure 7.9 Scheme of the aneroid dynamic combustion calorimeter designed by Adams, Carson, and Laye [77], A jacket B jacket lid C motor that drives the rotation of calorimetric system D rotation system E bomb (which is also the calorimeter proper) F channels to accommodate the temperature sensor, which is a copper wire resistance wound around the bomb G crucible H electrode I gas valve. Adapted from [77]. 

Figure 3.14 (a) Load and (b) Inject positions of a six-port valve. (Adapted from Ref. 6... 

In a dry-box operation, a 3-ounce Fischer-Porter aerosol compatibility tube is loaded with approximately 10 g. of cesium fluoride and then equipped with a stainless-steel needle-valve adapter and a 323A Hoke valve, f After removal from the dry-box, Swagelokf connections are made from the valve to a metal standard-taper joint and the whole assembly attached to... 

Fig. 1 Sources and description of apparatus. (I) Pittsburgh Valve and Fitting Company A, Nupro safety relief valve (100 psi release) 3-6R-4M-100 B, Cajon i in. Tee B-4-T C, Cajon i in. Hex long nipple B-4-HLN(2-l in.) D, Cajon 1 in. Cross B-4-CS E, Whitey Ball Valve B-43M-S4 F, Whitey 1 in. Forged Body Valve B-1VM4-S4 G, Cajon hex reducing nipple, 1 to 4 in. B-4-HRN-2. (II) Mattheson Gas Products H, Standard Guage (2-3% accuracy) 0-100 psig 63-3112. (Ill) Lab Crest Scientific I, Needle Valve adapter 110-957 Rubber washer 110-973 J, Aerosol reaction vessel, 3 oz 110-023-0(X)3.

Figure 12.2. Microcolumn flow-through manifolds for fractionation analysis in environmental solids (ti) continuous-flow system with either fraction collection or online detection (Jj) flow-injection setup with discrete injection of extractant (c) sequential injection system as assembled for fully automated sequential or single extractions. MC microcolumn, C coil, SP syringe pump, PP peristaltic pump, R reagent, D detector, W waste, SV selection valve, IV injection valve. (Adapted from Mir6 et al., 2005a.)...

Figure 3. Commonly used glassware and connectors. A.) 100 mL RB flask equipped with 15 mm 0-ring joint. B.) 15 mm 0-ring to 3/8" medium wall tubing adapter. C.) 15 mm 0-ring Teflon valve adapter (both 4 and 8 mm sizes are useful). D.) 15 mm 0-ring to 3/8" medium wall tubing Teflon valved adapter.

The line incorporates 8 mm Teflon valves and 20 mm 0-ring end caps individually valved with 4 and 8 mm 90° Teflon valve adapters. Gauge tubulations are 1" in diameter. A spare port is included to provide independent checking of gauge performance by installing a second calibrated gauge tube. 

Figure 4.7 Schematic diagram of ultrasound-assisted extraction (a) as an open system and (b) as a closed system (S—solvent PP—peristaltic pump EC—extraction chamber UB—ultrasonic bath SV—switching valve). (Adapted from Tadeo et al. with permission from Elsevier copyright 2010.)...

The confinement of fission gases and contaminants, avoidance of sodium vapors in the containment building, and avoidance of air with moisture in the gas space above the sodium are of critical importance during all phases of fuel handling. Gaining access to all the inerted or potentially contaminated facilities requires the use of equipment such as floor valves (Fig. A.5) and adapters that are unique to the particular facility or port involved. The most important adapters are the two floor valve adapters and the test transfer port. 

An oven-dried 1L three-necked round-bottomed flask is equipped with a Teflon-coated stir bar, a Vigreux column topped with a Teflon valve adapter for attachment to a vacuum line, and two glass stoppers. The flask is purged with argon, and m-xylene (400mL) is vacuum transferred (slowly ) into the flask. Under an Ar counterflow, a sample of CsMcsH (24.7 g, 0.181 mmol) is added via a syringe to the solution through a septum that has been inserted into one neck. The flask is cooled in a —10°C bath, and n-BuLi (115 mL of a 1.6M solution in hexane,... 

KCsMes is prepared by weighing KH (6.0 g, 0.15 mol) in a 500 mL round-bottomed flask equipped with a Teflon -coated magnetic stir bar, a swivel frit, a 500 mL round-bottomed collection flask, and a Teflon valve adapter. THF (250 mL) is vacuum transferred onto the KH. While the mixture is stirred in a -78°C bath, CsMcsH (20.44 g, 0.150 mol) is added through a sidearm by a syringe under an Ar counterflow. The suspension is allowed to stir in the —78°C bath and slowly warm to room temperamre, after which it is stirred for an additional 2 h. The suspension is filtered and washed with THF. The collected sohd is dried in vacuum. 

TaCls (35.0 g, 0.098 mol) is added to a 1L round-bottomed flask equipped with Teflon-coated stir bar and a Teflon Y-valve adapter for attachment to the vacuum line. Toluene (400 mL) is vacuum transferred onto the TaCls. On the Schlenk line, under strong Ar purge, the Teflon stopcock is replaced with a septum. (q -CsMcs) Sn(n-Bu)3 (49.9 g, 0.116 mol) is cannula transferred slowly to the stirred suspension of TaCls over a period of 30 min mild exothermicity ensues. Stirring is continued for a further 20 h to give a copious amount of a yellow suspension. The yellow suspension is filtered through a Schlenk frit via cannula transfer and is washed with dry petroleum ether (3x50mL). The residue is dried in vacuum. Yield of (Ti -CsMes)TaCl4 43.5 g (97%). 

Figure 3-4. Pipe fittings, (a) Globe valve, (b) Gate valve. (Adapted with permission from reference 2. Copyright 1960, John Wiley and Sons.)...

The experiments were conducted on a 2.5 24 L/D Davis-Standard (D-S) water-cooled single-screw extruder. The extruder was instrumented with pressure transducers along the barrel. It contained a 1/2 test head with a valved adapter at the die plate. Both a conventional metering screw of 24 L/D and a barrier screw of 30 L/D were tested. For the 30 L/D barrier screw trials, a 6 L/D barrel extension was added to the end of the barrel. The metering screw had an overall compression ratio of 3.64, while the barrier screw had a compression ratio of 2.53. A rod die was used of 0.5 diameter and 8 length with a... 

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