Page 36 - Alkon - Trans-DOT Catalog: Pnumatic Valves and Fittings for Transportation
P. 36
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PVN447 Series Valves
The pressure protection valve is a non-adjustable closed pressure-control valve. When supply air is greater
than 75 psi, the valve opens and supplies air downstream. When air supply falls below 70 psi, the valve closes.
A typical application would be in an air brake system, to protect a reservoir by closing automatically at 70 psi
when a reservoir system failure occurs.
SPECIFICATIONS
Material %ODFN DQRGL]HG DOXPLQXP VWDLQOHVV VSULQJ Flow direction Arrow on valve body indicates
Mounting 'LUHFW PRXQW RU LQOLQH PRXQW GLUHFWLRQ RI ÁRZ
Medium Air 3RUWV ODEHOHG ´, LQµ
Pressure SVL PD[ VXSSO\ ´2 RXWµ
Pressure to open 75 psi Flow &Y VFIP IXOO\ RSHQ
Pressure to close 70 psi 'LDSKUDJP /RZ WHPS %XQD
Temperature ) WR )
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VALVES
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