* Application HYR 815 Series Regulator is designed for commercial use such as restaurant business, small factory, apartment etc to supply natural gas. * Character It is easy to install (verticality and horizontality connecting pipe, Case rotate attachment) Can choice proper orifice according to first stage pressure and capacity. Orifice, Seat disc etc replacement and maintain is possible without disconnecting regulator body to pipe. * Specifications Inlet Pressure range 0.007~0.99 MPa Outlet Pressure range 1.5~3.8kPa(150~380mmH2O) Outlet Pressure setting 2.0(200mmH2O) Relief valve Setting Pressure S : 4.5kPa(450mmH2O) R : second stage pressure(P2)+1.2~2.8kPa OPSO Setting Pressure S : 4.0kPa(400mmH2O) R : 3.0~4.8kPa(300~480mmH2O) Max. capacity 70 Nm3/hr Connection Size PT 1 B Model Type HYR 815 Standard HYR 815 R Built-in relief valve HYR 815 OPSO Built-in relief valve, OPSO * Capacity Table HYR 815 Series Capacity table is indicating inlet pressure changing and capacity fluctuation according to orifice size. Standard object is natural gas. (gravity=0.6, standard state N m?/hr) * HYR 815 OPSO Regulator Construction * SPRING Main Spring Spring No. Pressure Range Color Ms 815 1.5kPa (150~380mmH2O) Green OPSO Spring Spring No. Pressure Range Color Os 81 3.0~4.8kPa (300~480mmH2O) Green Relief valve Spring Spring No. Pressure Range Color Rs 15 P2+1.2~2.8kPa (P2+120~280mmH2O) Green Unit : mmH20 * Regulator abnormality cause and settlement 1) Outlet part second pressure is drop 1) Cause Orifice size is small against to using capacity Gas supply is interrupted due to block gas filter Diaphragm is expanded due to long time using OPSO is locked up 2) Settlement Replace suitable orifice according to using capacity Disassembly gas filter and cleaning inside Disassembly case and replace diaphragm Block inlet & outlet valve and release gas. And then, restore OPSO. 2) Outlet part second pressure is increasing 1) Cause Lock-up condition is bad due to valve seat or orifice wear, crack etc First stage inlet pressure is applied toward OPSO because of OPSO Shaft O-ring damage Assembly lever linked diaphragm operation is not good Volume changing is happen due to temperature First stage inlet pressure is applied due to orifice sealing condition 2) Settlement Disconnecting case from pipe and replace valve seat and orifice Disconnecting OPSO from pipe and replace shaft O-ring Disassembly case and replace Assembly lever Keeping warm the expose pipe Re-assembly orifice sealing by sealing materials 3) In case of regulator hunting 1) Cause Orifice size is too much big against to capacity and pressure First stage pressure is unstabilized Inflow contamination materials or humidity to inside of second stage pipe Happening spring and diaphragm deformation due to long time use Large volume of gas is instantaneously & repeatedly flow and cut off. 2) Settlement Replace suitable orifice according to using capacity and pressure Disassembly and inspect filter Remove inside of contamination materials and humidity Disassembly case and inspect and then replace spring and diaphragm Secure sufficient second stage pipe volume
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