Emerson 1805 Series Relief Valves Datasheet download pdf

Bulletin 71.4:1805

October 2011

D100160X012

www.sherregulators.com

Type 1805-2

P1026

1805 Series Relief Valves

Introduction

The 1805 Series relief valves are designed for use

in farm tap applications where a safety relief valve is

needed between the rst and second stage regulators.

The 1805 Series is suitable for natural gas, air,

propane, or any operating medium that is not corrosive

to the internal parts. Relief pressures range from 5

to 125 psig / 0,34 to 8,6 bar. Maximum pressure,

including buildup, is 150 psig / 10,3 bar.

Features

• Tight Shutoff—Provided by the Nitrile (NBR)

O-ring and O-ring seat.

• Easy Maintenance—The union nut allows quick

removal of the cage assembly for trim inspection.

The valve can be back in operation in a matter

of minutes.

• Simple Adjustment—A single adjusting screw is

used to meet individual application requirements.

• Complete Venting—A closing cap is available if

all venting must be piped away.

• Sour Gas Service Capability—Optional materials

are available for applications handling sour gases.

These constructions comply with the

recommendations of the NACE International

Standards MR0175 and MR0103.

Figure 1. Typical 1805 Relief Valves

Type 1805-4

1805G

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - 1805 Series Relief Valves

Bulletin 71.4:1805October 2011D100160X012www.sherregulators.comType 1805-2P10261805 Series Relief ValvesIntroductionThe 1805 Series relief valves are

Page 2 - Bulletin 71.4:1805

Bulletin 71.4:18052SpecicationsAvailable Constructions See Table 2Body Style Globe bodyBody Sizes and End Connection Style 3/4, 1, 1-1/2, or 2 NPT

Page 3 - Type XXXX

Bulletin 71.4:18053Type XXXXMXXXXINLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSUREMonth YearType XXXXTANK PRESSUREVACUUM PRESSUREPRE-EXPANSION PRESSUR

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Bulletin 71.4:180541. SETPOINT IS TO BE INTERPRETED AS BUBBLE POINT*MAXIMUM PRESSURE INCLUDING BUILDUP - 150 psig / 10,3 bar AT 150°F / 66°C.3/4 AND 1

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Bulletin 71.4:18055InstallationThe 1805 Series relief valves may be installed in any position. However, the outlet connection and vents must be prote

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Bulletin 71.4:18056Figure 5. 1805 Series Dimensional DrawingsTYPE 1805-4 OR 1805-5 WITHOUT CLOSING CAPTYPE 1805-2, 1805-3, OR 1805-7 WITH CLOSING CAP

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Bulletin 71.4:18057Regulators Quick Order Guide* * *Readily Available for Shipment* *Allow Additional Time for Shipment*Special Order, Constructed fro

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