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Application

HYR 815 Series Regulator is designed for commercial use such as restaurant business, small factory, apartment etc to supply natural gas.

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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.

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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

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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)

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HYR 815 OPSO Regulator Construction

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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

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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