Lowflow JRH Series High Pressure Regulator Manuel d'utilisateur télécharger pdf

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

low[email protected] • www.lowowvalve.com

I & M JRH Series

Installation & Maintenance Instructions for

JRH Series Gas Pressure Reducing Valves

Warning: Low Flow Regulators must only be used, installed and repaired in accordance with these Installation &

Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event of leak-

age or other malfunction, call a qualiﬁed service person; continued operation may cause system failure or a general

hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized ﬂuid. Before disassembling a

valve, be sure to release all spring tension.

Please read these instructions carefully!

Your LowFlow/Jordan product will provide you with long, trouble-

free service if it is correctly installed and maintained. Spending a few

minutes now reading these instructions can save hours of trouble and

downtime later. When making repairs, use only genuine LowFlow Valve

parts, available for immediate shipment from the factory.

Ideal Installation

Preferred Installation

Caution! Installation of adequate overpressure protec-

tion is recommended to protect the regulator from over-

pressure and all downstream equipment from damage

in the event of regulator failure.

An inlet block valve should always be installed.1.

If service application is continuous such that shut-2.

down is not readily accomplished, it is recommend-

ed that an inlet block valve, outlet block valve, and a

manual bypass valve be installed.

An outlet pressure gauge should be located ap-3.

proximately ten pipe diameters downstream, and

within sight. If you have ordered your JR with outlet

gauge option on the valve outlet, please note that

the outlet pressure as registered on the gauge may

be slightly higher than a gauge located down-

stream.

All installations should include a downstream relief 4.

device if the inlet pressure could exceed the pres-

sure rating of any downstream equipment or the

maximum outlet pressure rating of the unit.

Flow Direction: install so that the ﬂow direction 5.

matches the inlet/outlet marking on the main regula-

tor body (1).

For best performance, install in well drained horizon-6.

tal pipe.

Basic regulator - regulator may be rotated around 7.

the pipe axis 360°. Recommended position is with

knob (14) vertical upwards.

Regulators are not to be buried underground.8.

For insulated piping systems, recommendation is to 9.

not insulate regulator.

Principles of Operation

Movement occurs as pressure variations register 1.

on the diaphragm (3). The registering pressure is

the outlet, P2, or downstream pressure. The range

spring (5) opposes diaphragm (3) movement. As

outlet pressure drops, the range spring (5) pushes

the diaphragm (3) down, opening the port; as out-

let pressure increases, the diaphragm (3) pushes

up and the port opening closes.

A complete diaphragm (3) failure will cause the 2.

regulator to fail open.

Supply

JRR

Bypass

To Drain

Outlet

To Drain

1 2 3 4

Résumé du contenu

Page 1 - I & M JRH Series

3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax 513-871-0105low[email protected] • www.lowowvalve.comI & M JRH Seri

Page 2 - Maintenance

Start UpCaution! Don’t not exceed the maximum rated pressure of the regulator if installed for a hydrostatic test. Isolate the unit if the test is abo

Page 3 - Troubleshooting

-3-Refer to Figure 1. Unscrew the lower diaphragm 10. plate (4) from the upper diaphragm plate (2). Dis-card the old diaphragm (3) and reassemble with

Page 4 - Cross Section View

Cross Section View3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax 513-871-0105low[email protected] • www.lowowvalve.com

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Lowflow JRH Series High Pressure Regulator Manuel d'utilisateur

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Résumé du contenu

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