Emerson H800- Installation Manual

D100405XENG

Installation Guide

English – May 2002

Type H800

www.emersonprocess.com/regulators

Introduction

This installation guide provides instructions for installation, startup,

and adjustment. To receive a copy of the instruction manual,

contact your local Fisher Sales Office or Sales Representative or

view a copy at www.emersonprocess.com/regulators. For further

information refer to: Type H800 Instruction Manual, form 5187,

D100405X012.

P.E.D. Categories

This product may be used as a pressure accessory with

pressure equipment in the following Pressure Equipment

Directive 97/23/EC categories. It may also be used outside

of the Pressure Equipment Directive using sound engineering

practice (SEP) per table below.

ProDuCt sIzE

CatEgorIEs

fluID tyPE

DN 6 (1/4-inch)

SEP

1

Specifications

End Connections

DN 6 (1/4-inch) NPT female

Vent Connection

DN 15 (1/2-inch) NPT female

Maximum allowable Control Pressure

(1)

17,2 bar (250 psig)

Pressure range

(1)

Non-adjustable, start to discharge between

2,7 and 3,0 bar (39 and 44 psig)

reseat Pressure

(1)

2,4 bar (35 psig) or higher

Proof test Pressure

All Pressure Retaining Components have been proof

tested per Directive 97/23/EC - Annex 1, Section 7.4

Material temperature Capabilities

(1)

-20 to 150°F (-29 to 66°C)

1. The pressure/temperature limits in this installation guide and any applicable

standard or code limitation should not be exceeded.

Installation

Only qualified personnel should install

or service a backpressure regulator.

Backpressure regulators should be installed,

operated, and maintained in accordance

with international and applicable codes and

regulations, and Fisher instructions.
If using a backpressure regulator on a hazardous

or flammable fluid service, personal injury

and property damage could occur due to fire

or explosion of vented fluid that may have

accumulated. To prevent such injury or damage,

provide piping or tubing to vent the fluid to a

safe, well-ventilated area or containment vessel.

Also, when venting a hazardous fluid, the piping

or tubing should be located far enough away

from any buildings or windows so to not create

a further hazard, and the vent opening should be

protected against anything that could clog it.

Personal injury, equipment damage, or leakage

due to escaping fluid or bursting of pressure-

containing parts may result if this backpressure

regulator is overpressured or is installed where

service conditions could exceed the limits given

in the Specifications section, or where conditions

exceed any ratings of the adjacent piping or

piping connections.

To avoid such injury or damage, provide

pressure-relieving or pressure-limiting devices

(as required by the appropriate code, regulation,

or standard) to prevent service conditions from

exceeding limits.

Additionally, physical damage to the backpressure

regulator could result in personal injury and

property damage due to escaping fluid. To avoid

such injury and damage, install the backpressure

regulator in a safe location.

Clean out all pipelines before installation of the backpressure

regulator and check to be sure the backpressure regulator

has not been damaged or has collected foreign material

during shipping. For NPT bodies, apply pipe compound to

the male pipe threads. For flanged bodies, use suitable line

gaskets and approved piping and bolting practices. Install

the backpressure regulator in any position desired, unless

otherwise specified, but be sure flow through the body is in

the direction indicated by the arrow on the body.

Note

It is important that the backpressure regulator be

installed so that the vent hole in the spring case is

unobstructed at all times. For outdoor installations,

the backpressure regulator should be located

away from vehicular traffic and positioned so that

water, ice, and other foreign materials cannot enter

the spring case through the vent. Avoid placing

the backpressure regulator beneath eaves or

downspouts, and be sure it is above the probable

snow level.

overpressure

Maximum inlet pressures depend upon body materials and

temperatures. Refer to the nameplate for the maximum

inlet pressure of the valve. The valve should be inspected

for damage after any overpressure condition.

Fisher

backpressure regulators are Not asME safety relief valves

.

startup

The backpressure regulator is factory set at approximately the

midpoint of the spring range or the pressure requested, so an

initial adjustment may be required to give the desired results.

With proper installation completed and relief valves properly

adjusted, slowly open the upstream and downstream shutoff

valves (if applicable).

Adjustment

To change the outlet pressure, remove closing cap or loosen

the locknut and turn the adjusting screw clockwise to increase

outlet pressure or counterclockwise to decrease pressure.

Monitor the outlet pressure with a test gauge during the

adjustment. Replace closing cap or tighten the locknut to

maintain the desired setting.