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Push Button Valve RMG 911a operating position "open"

General Description

911.00 Edition 07/1993

Serving the gas industry - WORLDWIDE

Push Button Valve RMG 911a operating position "open" Application • for use in measuring lines for safety devices • suitable for natural gas and all non-corrosive gaseous media

Characteristics • enables an easy and safe testing of safety shut-off and safety relief valves through integrated screw couplings for pressurization and pressure measuring • the valve can be closed by pushing the lever; it re-opens automatically into its operating position upon release • with a three-way ball valve as an optional feature • tested by DVGW, corresponds to the demands stated in the DVGW-worksheet G 491

Technical data

max. operating pressure

100 bar

connections

screw connections without brazing according to DIN 2353, external pipe diameter 12 mm

measuring impulse connection

screw coupling type 1215 for high pressure tubing (registration by DVGW)

thread connection (body)

- pipe screw M 16 x 1.5 - screw coupling M 10 x 1

by-pass valve (as an optional feature)

three-way ball valve

diameter

valve seat 6 mm ball valve 10 mm

temperature range

- 15 °C ... + 60 °C

material

valve body internal parts sealings

aluminium alloy steel NBR

weight

testing valve ball valve

0.75 kg 0.5 kg

DVGW registration no.

G 92 e 026

2

Push Button Valve RMG 911a operating position "open" Design and Operation

control element

lever

measuring impulse connection (in operation)

three-way ball valve

measuring impulse connection (starting-up)

connection (measuring unit) connection (pressurization and pressure measuring)

location hole

The push button contact valve RMG 911a is used in measuring lines for safety shut-off valves and safety relief valves.

Corresponding to the demands stated in the DVGW-worksheet G 491 (6.4) these devices are allowed to be mounted in the measuring line, if they can guarantee the function of the safety devices after testing. This demand is fulfilled by the automatic opening of the valve seat upon release.

When using switchable measuring impulse connections a push button valve is applied in combination with a three-way ball valve (with overlapping switching positions). This guarantees the connection with at least one measuring impulse line to the measuring unit in any position of the three-way ball valve.

In the normal operating position the push button contact valve is "open" and the pressure is monitored at the measuring unit.

The SSV can be tested by pressing the lever of the valve RMG 911a downwards to the stop. Thus the measuring line interrupted, and via one connection at the side of the valve the pressure within the measuring line (leading to the SSV actuator) can be altered by using special testing equipment. The second screw coupling enables the connection of a controlling pressure gauge.

Optionally the screw couplings can be mounted in any position, to the right or the left of the push button contact valve. After the testing process the valve re-opens into its normal operating position by releasing the lever, which is placed into the location hole and additionally confirms the valve position to be "open".

Scheme

3

Push Button Valve RMG 911a operating position "open" Mounting and dimensions RMG 911a

measuring line

three-way ball valve

measuring unit

SSV

4

GDR

connections for pressurization and pressure measuring

measuring line (starting-up)

stop valve armature

measuring line (in operation)

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external pipe diameter of the connecting lines

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RMG 911a - 12 - 2 - 2/2 - 1 g

4. Description (Example)

12

testing connection without connection (with screws) 1 connection (for pressurization) 2 connections (for pressurization and pressure measuring)

0 1 2

connections for high pressure tubes pressurization (connection for external pipe diameter 12 mm) without 1m length

0 1

2m length

2

4m length

3

pressure measuring (connection for pressure gauge G 1/2) without

0

1m length

1

2m length

2

4m length

3

three-way ball valve without with

0 1

5

We supply you with products for gas pressure regulation RMG REGEL + MESSTECHNIK GMBH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007 107 gas pressure regulators and safety devices

RMG-GASELAN Regel + Meßtechnik GmbH Julius-Pintsch-Ring 3, D-15517 Fürstenwalde, Germany Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836 gas pressure regulating equipment, displacement meters, complete stations

Bryan Donkin RMG Gas Controls Ltd. Enterprise Drive, Holmewood, Chesterfield S42 5UZ, England Telephone (++44) 1246 501-501 • Fax (++44) 1246 501-500 gas pressure regulating equipment, underground compact units

Bryan Donkin RMG Canada Ltd. 50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada Telephone (++1) 519 5398531 • Fax (++1) 519 5373339 domestic regulators and safety devices

companies of the RMG group RMG Messtechnik GmbH Otto-Hahn-Strasse 5, D-35510 Butzbach, Germany Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130 turbine meters, vortex meters, correctors, flow computers, odorizers

Karl Wieser GmbH Anzinger Strasse 14, D-85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10

works Beindersheim Heinrich-Lanz-Strasse 9, D-67259 Beindersheim/Pfalz, Germany Telephone (++49) 6233) 3762-0 • Fax (++49) 6233 3762-40 data logging, monitor systems, danger alarm systems

WÄGA Wärme-Gastechnik GmbH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207 design and assembly of gas pressure regulating and metering stations

Die RMG Group of Companies on the internet: http://www.rmg.de

Your competent partner

Serving the gas industry - WORLDWIDE

We reserve the right for technical changes