Aperval
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Aperval Pressure Regulators

Pressure regulators Aperval Aperval is pilot-controlled pressure regulator for medium and low pressure applications. Aperval is normally a fail to open regulator and specificaly will open under the following conditions: - breakage of main diaphragm; - lack of sensing line connection. This regulator is suitable for use with previously filtered, non-corrosive gases. Modular Design The modular design of pressure regulator Aperval allows retrofiting of an emergency monitor PM/182 or slam shut valve and/or silencer on the same body. The Aperval regulator is truly a “top entry design” which allows...

Whenever certain noise limit is desired, the silencer allows you to considerably reduce the noise level (dBA) up to the required value. The Aperval pressure regulator can be supplied with an incorporated silencer in either the standard version or version with incorporated slam-shut or incorporated monitor regulator. With the built-in silencer, the Cg and KG valve coefficients are 5% lower than the corresponding version without the silencer. Given the modular arrangement of the regulator, the silencer may be retrofited to both standard Aperval version as well as those with incorporated...

INCORPORATED SLAM SHUT MONITOR PM/182 This emergency regulator (monitor) is directly integrated to the body of the main regulator. Both pressure regulators, therefore, use the same valve body, although they have indipendent actuators, pilots and valve seats. The operational characteristics of the PM/182 monitor are the same as for the Reval 182 regulator The Cg and KG coefficients of regulator having an incorporated monitor are 5% lower than those for standard version. Another great advantage offered by the incorporated monitor regulator is that it can be installed at any time, even on an...

MATERIALS Body Cast steel ASTM A216 WCB for all sizes Ductile iron GS 400-18 ISO 1083 for all size Head covers Rolled or forged carbon steel Valve seat Vulcanized rubber Nitrile rubber Compression fittings According to DIN 2353 in zinc-plated carbon steel The characteristics listed above are referred to standard products. Special characteristics and materials for specific applications may be supplied upon request. Cg, KG and K1 coefficient Nominal diameter (mm) Size (inches) Cg flow coefficient KG flow coefficient K1 body shape factor For sizing formula refer to www.fiorentini.com/sizing...

Aperval regulators are are equipped with series 200 pilot listed below: Reflux 819 regulators equipped with series 300 pilot as as listed below: - 301/. control range Wh: 5 mbar43 bar; (4,5 to 623W.c. to 1,45 Psig) 204/. 0,3 to to 100 mbar; (2” Psig) - 301/.TR control range Wh: 0,160 bar; (290 to 870 Psig) 205/. control range Wh: 20 to to 2 bar; (1,45 to 29 Psig) - 302/. control range Wh: 0,8to 74 bar; (595 toto 137Psig) 207/. 41 to 9,5 bar; (11,6 1073 Psig) Pilots may be adjusted manually or remotely as shown in table 3: Pilot adjustments Table: Pilot adjustingManual setting instructions...

IN-LINE MONITOR The monitor is generally installed upstream of the main regulator. Depending on service specification, the monitor may be chosen as follow: > Aperval pressure regulator, identical to the main regulator (fig.5), the only difference is that monitor is set at a higher pressure than the main regulator. > Reval 182 pressure regulator (fig.6), The Cg and KG coefficients of the regulator plus in-line monitor system are about 20% lower than those of the regulator alone. APERVAL APERVAL Only for monitor type Reval or PM 182 When the monitor is required to take over rapidly in the...

Aperval Overal dimensions in mm Size (mm) 25 50 Tubing Connections Face to face dimensions S according to IEC 534-3 and EN 334 Weights in Kgf S - Ansi 150/PN 16 20 34

Overal dimensions in mm Size (mm) Inches S - Ansi 150/PN 16 A B C D E F G H M Tubing Connections

APERVAL + PM/182 Overal dimensions in mm Size (mm)

Overal dimensions in mm Size (mm) Inches S - Ansi 150/PN 16 A B C D E F G H L M N Tubing Connections Face to face dimensions S according to IEC 534-3 and EN 334

Reducing and metering Metering Ball valves Pietro Fiorentini S.p.A. via E.Fermi 8/10 I-36057 Arcugnano (VI) Italy The data are not binding. We reserve the right to make eventual changes without prior notice.