GESTRA Plug valve / lever / purge / for water PA 46

Plug valve / lever / purge / for water PA 46,  GESTRA AG

The PA intermittent blowdown valve is set to the open position using a lever. Here, the pressure pin forces the spring-loaded valve plug out of the valve seat, opening up a large cross section. The resulting suction removes settled sediment on the floor of the boiler, also known as boiler sludge, from the boiler.

The blowdown action is only effective for the first two seconds. Longer opening times lead to water losses.

GESTRA Conductive level controller NRG 16-52, NRS 1-55

Conductive level controller / for boilers NRG 16-52, NRS 1-55, GESTRA AG

Level control of the feedwater and pressure expansion vessel is achieved by means of a NRG 16-52 multiple level-control conductivity electrode.
The NRS 1-55 level switch is used for the level control (pump ON/OFF), and the NRS 1-52 for the separate high level alarm.

The switchpoints for the multiple level-control electrode are set by shortening the individual electrode tips until the desired switchpoint is reached.

GESTRA Boiler level controller NRGT 26-1S, NRS 2-51, NRR 2-50, NRR 2-51

Boiler level controller NRGT 26-1S, NRS 2-51, NRR 2-50, NRR 2-51  GESTRA AG

The compact NRGT 26-1S unit consists of a level electrode and level transmitter. It continually measures the water level on the principle of capacitance. During this process, it converts changes in the level into a 4-20 mA current signal proportional to the level. The measuring range is determined by the length of the electrode tip.

In combination with NRS 2-51 level switches and NRR 2-50 or NRR 2-51 proportional controllers, the transmitter is used, for example, as a water level controller with MIN/MAX alarm.

To make sure that the particular requirements from the various classification societies for vibration, climate, EMC, etc. are satisfied, numerous inspection certificates have been acquired:

GL, LR, See BG, RINA, NKK, ABS, KR, BV, DNV.

GESTRA Conductivity controller LRGS 15-1

Conductivity controller LRGS 15-1 GESTRA AG

The LRGS 15-1 compact system measures using the conductivity principle. Electrically conductive media up to a maximum of 10,000µS/cm can be controlled and limited by a continuous blowdown valve.

Continual monitoring and limiting of conductivity
Direct measurement in the boiler drum
Automatic blowdown of boiler water
Temperature-compensated measurement (optional)
Digital display
Menu-guided operation
Can be read in various installation positions
The LRGS 15-1 has a controller integrated in the electrode body, which controls all functions. No external switching device is necessary.

GESTRA Conductive level alarm NRGS 15-1

Conductive level alarm / for water / compact NRGS 15-1 GESTRA AG

The NRGS 15-1 compact system measures using the conductivity principle. It can indicate a maximum of four water levels in electrically conductive media:

MAX alarm
First MIN alarm
MIN alarm with lock
Pump ON, OFF each with a switchpoint or, alternatively, time-driven.
The NRGS 15-1 has a level switch integrated in the electrode body, which controls all functions. No external switching device is necessary.

GESTRA Temperature limiter TRG 5-6, TRV 5-40, NRS 1-40

Temperature limiter with LCD display / safety TRG 5-6, TRV 5-40, NRS 1-40 GESTRA AG

The temperature limiter of this series works in combination with TRG 5-6x resistance temperature sensors and a separate TRV 5-40 preamplifier. Safety shut-down of the energy supply is achieved via a separate module, the NRS 1-40.1. If additional control tasks are required, further temperature sensors can be connected to the preamplifier and their signals processed by a TRS 5-40 electronic control unit.

You can operate the system easily and guided by menus using the separate URB 1 or URB 2 operator terminal. Here, error messages are displayed in addition to set points and actual values. 100% measuring range adjustment is possible from a water level of 25% or more.

GESTRA Conductive level controller NRG 26-40, NRR 2-40

Conductive level controller / with LCD display / for boilers NRG 26-40, NRR2-40 GESTRA AG

Continuous control ensures cost-efficient operation, improved steam quality and the option of adaptation to suit even tricky controlled systems.

The level measuring and control system comprises the NRG 26-40 level electrode and NRR2-40 proportional controller. The NRG 26-40 uses the principle of capacitance measurement, whereby the level is recorded continuously in a defined measuring range, in electrically conductive and non-conductive media. The water-level data are transferred via the CANopen protocol.

The level controller has two limit values each with one switchpoint (MAX alarm, first MIN alarm). It can be equipped with a 4-20 mA output as an actual-value and/or modulating output. All contacts can be adjusted with a time delay from 1 to 25 sec.

GESTRA for overflow detection NRG 16-41, NRS 1-41

Water level alarm / for overflow detection NRG 16-41, NRS 1-41 GESTRA AG

Targeted reduction of boiler damage

With the water level limiters of the SPECTOR family, GESTRA is now offering the fifth generation of these safety components. The new products provide solutions that conform to the technical literature, increase safety in operation and keep costs down. In accordance with EU boiler standards EN 12952 and EN 12953, in future a risk analysis must be performed for each limiter function, and appropriate Safety Integrity Levels (SIL) established. The boiler protection system must conform at least to SIL 2.

HIGH LEVEL ALARM WITH NRG 16-41 AND NRS 1-41

In combination with an NRG 16-41 level electrode and the NRS 1-41 control device, this alarm constitutes a “High Integrity” system with periodic self-test and monitoring of output relay contacts. It is designed for use in steam and hot-water plants in accordance with TRD 401, TRD 602, TRD 604, EN 12952/..53. The electrical installation conforms to the technical literature for safety circuits as per DIN EN 50156. Both the control device and the level probe work with the CANopen protocol.

GESTRA Water level alarm NRG 16-40, NRS 1-40

Water level alarm / for overflow detection NRG 16-40, NRS 1-40 GESTRA AG

Targeted reduction of boiler damage

With the water level limiters of the SPECTOR family, GESTRA is now offering the fifth generation of these safety components. The new products provide solutions that conform to the technical literature, increase safety in operation and keep costs down. In accordance with EU boiler standards EN 12952 and EN 12953, in future a risk analysis must be performed for each limiter function, and appropriate Safety Integrity Levels (SIL) established. The boiler protection system must conform at least to SIL 2.

LOW LEVEL ALARM WITH NRG 16-40 AND NRS 1-40

The alarms are a combination of an NRG 16-40 level electrode and an NRS 1-40.1 level switch. Units are available in “conventional” and “High Integrity” versions. Their respective areas of application are set out in the technical literature and are based on a plant’s risk potential. The basis for this can be the maximum working pressure (TRD 701 1 bar; PED 0.5 bar), or the boiler water content (TRD 802). Both the control device and the level probe work with the CANopen protocol.

GESTRA Conductivity controller LRR 1-52, LRR 1-53

Conductivity controller LRR 1-52, LRR 1-53 GESTRA AG

As an option, controllers from the LRR 1-52 and LRR 1-53 series can operate in conjunction with a simple conductivity electrode and separate temperature sensor, or a conductivity transmitter from the SPECTORcompact line. They are operated using the separate URB 50 touch panel. Here, trend values, error messages and limit values are displayed in addition to set points and actual values.

The controllers have been optimised for operation with BAE continuous blowdown valves. All units feature an actual-value current output as standard, and offer a blowdown timer and standby input.

GESTRA Boiler level controller NRR 2-52, NRR 2-53

Boiler level controller NRR 2-52, NRR 2-53 GESTRA AG

These closed-loop controllers use both capacitance probes and level transmitters from the SPECTORcompact line, and feature a modulating control output for pneumatic valves.

The unit is optionally available as a three-component controller. Navigation is easy, voice-free and menu-guided via the separate, prominent URB 50 touch panel. In addition to set points and actual values, trend values, error messages and limit values are displayed. 100% measuring range adjustment is possible from a water level of 25% or more.

GESTRA Digital temperature limiter TRS 5-50

Digital temperature limiter / SIL 3 / safety TRS 5-50 GESTRA AG

The new TRS 5-50 safety temperature switch is certified to SIL 3 in accordance with EN 12952/53. It is self-monitoring, performs periodic self-tests and has two channels.

The unit works in combination with a Pt100 temperature sensor of the type TRG 5-6. Both the actual and requested temperature are continuously displayed.

As an option, the switch can also be supplied with an actual-temperature output.

GESTRA Purge valve MPA 46, MPA 47, TA 7

Purge valve / for water / for boilers MPA, TA 7 GESTRA AG

Intermittent blowdown is achieved by the valve cone opening very quickly. This briefly produces “vacuum” at the bottom of the boiler. The resulting suction removes settled sediment on the floor of the boiler, also known as boiler sludge, from the boiler. The blowdown action is only effective for the first two seconds. Longer opening times lead to water losses.

The boiler pressure supports the closing force of the MPA valve spring, so that the valve closes reliably. The primary area of use is steam boiler plants. The intermittent blowdown action of the valves is triggered by controls such as the TA 7, for example. The control consists of an electronic cycling timer, a three-way solenoid valve and a strainer.

GESTRA for boilers blowdown Valves BAE 46, BAE 47

Purge valve / for water / for boilers / wear-resistant BAE GESTRA AG

Continual evaporation in the steam generating unit increases the dissolved solids content of the boiler water. This must be kept within the limits set by the boiler manufacturer, however, which are governed by the applicable directives. The boiler water or blowdown must therefore be evacuated either continuously or at intervals.

This is the task of the BAE valves. Their wear-resistant nozzle stem has a special geometry, whereby the needle is centrally located when it enters the system of nestling expansion chambers. Here, continuous boiler blowdown takes place at a very high differential pressure. The BAE valves are designed for operation in steam generating plants that conform to TRD 604, EN 12952 and EN 12953.

GESTRA Conductivity controller LRS 1-50

Conductivity controller LRS 1-50 GESTRA AG

The simple LRS 1-50 conductivity switch indicates excessively high or low conductivity in the boiler, and can trigger a simple valve.

As an option, controllers from the LRR 1-5x series can operate in conjunction with a simple conductivity electrode and separate temperature sensor, or a conductivity transmitter from the SPECTORcompact line. Display and operation have been kept simple and adapted to suit the NRR 2-2 proportional controller. All controllers are equipped with an actual-value output.

GESTRA Boiler level controller NRR 2-50, NRR 2-51

Boiler level controller NRR 2-50, NRR 2-51 GESTRA AG

Capacitance proportional controllers NRR 2-50 and NRR 2-51

These closed-loop controllers use both capacitance probes and level transmitters from the SPECTORcompact line, and feature a three-position proportional stepping output for electric valves, or a modulating control output for pneumatic valves. The icon-based menus are navigated using a rotary knob/pushbutton. The values are shown on a 4-digit, 7-segment display. 100% measuring range adjustment is possible from a water level of 25% or more.

GESTRA for overflow detection NRG 16-51, NRS 1-51

Water level alarm / for overflow detection NRG 16-51, NRS 1-51 GESTRA AG

Targeted reduction of boiler damage

With the water level limiters of the SPECTOR family, GESTRA is now offering the fifth generation of these safety components. The new products provide solutions that conform to the technical literature, increase safety in operation and keep costs down. In accordance with EU boiler standards EN 12952 and EN 12953, in future a risk analysis must be performed for each limiter function, and appropriate Safety Integrity Levels (SIL) established. The boiler protection system must conform at least to SIL 2.

FOR THE HIGH LEVEL ALARM: NRG 16-51 AND NRS 1-51

These units are not determined by the technical literature, but by the downstream steam consumers. They assess danger provoked by overfilling or by water carried into downstream parts of the plant.
If the potential risk is high, “High Integrity” units are employed. If no immediate damage is expected, “conventional design” units are sufficient.

GESTRA Water level alarm NRG 16-50, NRS 1-50

Water level alarm / for overflow detection NRG 16-50, NRS 1-50 GESTRA AG

Targeted reduction of boiler damage

With the water level limiters of the SPECTOR family, GESTRA is now offering the fifth generation of these safety components. The new products provide solutions that conform to the technical literature, increase safety in operation and keep costs down. In accordance with EU boiler standards EN 12952 and EN 12953, in future a risk analysis must be performed for each limiter function, and appropriate Safety Integrity Levels (SIL) established. The boiler protection system must conform at least to SIL 2.

NRG 16-50 AND NRS 1-50 FOR THE LOW LEVEL ALARM

In conformity with the EN technical literature, these units have been developed and manufactured in accordance with IEC 61508, Functional Safety, and certified to SIL 3. The alarms comply with the Pressure Equipment Directive and have EC and TÜV type-approval numbers. “High Integrity” alarms with periodic self-test monitor both the electromechanical part of the electrode and analysis in the level switch.

GESTRA Conductivity controller LRR 1-40, LRG 16-40, LRG 16-41

Conductivity controller LRR 1-40, LRG 16-40, LRG 16-41 GESTRA AG

The LRR 1-40 conductivity controller works in combination with temperature-compensated conductivity electrodes. The LRG 16-40 dual-electrode probe is designed for lower conductivity, the LRG 16-41 quadruple-electrode probe for higher conductivity up to max. 10,000µS/cm.

In addition to an actual-value output and a timer output for an intermittent blowdown valve, the LRR 1-40 also offers a standby function. You can operate the system easily and guided by menus using the separate URB 1 or URB 2 operator terminal, which displays set points, actual values and error messages.

Data is exchanged between components via a CAN bus interface.

GESTRA for Special Applications AK 45, UBK 46, SMK 22, TK 23, GK 11

Gestra AK 45 PN40
For discharging condensate from steam systems during
start-up and draning residual condensate at shut-down.
Factory-set closing pressure 0.8 bar

Gestra UBK 46 PN40
Steam traps with adjustable condensate discharge temperature.,
thereby suppressing the formation of flash steam

Gestra SMK 22
Pocket-free steam trap for SIP applications.
Body Material: Stainless steel 316L
Gestra SMK 22SMK 22-51
Gestra SMK 22-81, SMK 22-82

Gestra TK, GK
For the discharge of very large condensate flowrates
Body Material: Cast iron
Gestra TK 23, TK 24
Gestra GK 11

GESTRA Ball Float Traps UNA14, UNA23, UNA45, UNA46

Features of the UNA series:

Gestra UNA 14, UNA 16, UNA 16A DN15(1/2″)-DN25(1″) Max Diff. Pressure : up to 32 Bar
End connections: Flanged PN25/40, Class150, socket-weld ends, butt-weld ends, screwed sockets
Body Material: Carbon steel, Low carbon stainless steel 316L

Gestra UNA 41 DN15(1/2″)-DN25(1″) Max Diff. Pressure : up to 14 Bar
End connections: Flanged PN16, Class150, socket-weld ends, butt-weld ends, screwed sockets
Body Material: Carbon steel

Gestra UNA 23, UNA 25, UNA 26 DN15(1/2″)-DN50(2″) Max Diff. Pressure : up to 32 Bar
End connections: Flanged PN16/40, Class150/300, socket-weld ends, butt-weld ends, screwed sockets
Body Material: Cast iron, Carbon steel, Stainless steel CF8M

Gestra UNA 45, UNA 46, UNA 46A DN15(1/2″)-DN50(2″) Max Diff. Pressure : up to 32 Bar
End connections: Flanged PN40, Class150/300, socket-weld ends, butt-weld ends, screwed sockets
Body Material: Carbon steel, Stainless steel 316L

Gestra UNA 45 MAX, UNA 46 MAX, UNA 46A MAX DN40(1 1/2″)-DN50(2″) Max Diff. Pressure : up to 32 Bar
Gestra UNA 27h DN25(1″)-DN50(2″) Max Diff. Pressure : up to 45 Bar
End connections: Flanged PN63, Class300/400/600, socket-weld ends, butt-weld ends
Body Material: Alloy steel for high temperature service

Gestra UNA 38, UNA 39 DN15(1/2″), DN25(1″)-DN50(2″) Max Diff. Pressure : up to 140 Bar
End connections: Flanged PN100/160, Class600/900/1500, socket-weld ends, butt-weld ends
Body Material: Alloy steel for high temperature service

GESTRA Thermostatic Steam Traps MK25, MK35, MK36, MK45

Features of the MK series:

Gestra MK 35/31MK 35/32 DN10(3/8″)-DN15(1/2″) Max Diff. Pressure : 21 bar
End connections: Socket-weld ends , screwed sockets
Body Material: Carbon steel

Gestra MK 35/2S, MK 35/2S3 DN25(1″) Max Diff. Pressure : 32 bar
End connections: Flanged PN40, Class150/300, socket-weld ends, screwed sockets, butt-weld ends
Body Material: Carbon steel

Gestra MK 25/2, MK 25/2S DN40(1 1/2″ – DN50(2″) Max Diff. Pressure : 32 bar
End connections: Flanged PN40, Class150/300, socket-weld ends, screwed sockets, butt-weld ends
Body Material: Carbon steel

Gestra MK 45-1, MK 45-2, MK 45 A-1, MK 45 A-2 DN15(1/2″)-DN25(1″) Max Diff. Pressure : 32 bar
End connections: Flanged PN40, Class150/300, socket-weld ends, butt-weld ends, screwed sockets
Body Material: Carbon steel, Low carbon stainless steel 316L

Gestra MK 36/51MK 36/52 DN8(1/4″)-DN25(1″) Max Diff. Pressure : 32 bar
End connections: Screwed sockets, union butt-weld nipples
Body Material: Stainless steel

GESTRA Thermostatic Steam Traps BK15, BK27, BK37, BK45, BK212

Features of the BK series:

Gestra BK 45, BK 46  DN15(1/2″)-DN25(1″) Max Diff. Pressure : 22/32 Bar
End connections: Flanged PN40, Class150/300, socket-weld ends, butt-weld ends, screwed sockets
Body Material : Carbon steel, Alloy steel for high temperature service

Gestra BK 15 DN40(1 1/2″)-DN50 (2″) Max Diff. Pressure : 22 Bar
End connections: Flanged PN40, Class150/300, socket-weld ends, butt-weld ends, screwed sockets
Body Material : Carbon steel

Gestra BK 27N DN40(1 1/2″)-DN50 (2″) Max Diff. Pressure : 45 Bar
End connections: Flanged PN40/63, Class400, socket-weld ends, butt-weld ends
Body Material : Alloy steel for high temperature service

Gestra BK 37, BK 28, BK 29 DN15(1/2″)-DN25(1″) Max Diff. Pressure : 45/85/110 Bar
End connections: Flanged PN63/100/160, Class400/600/900/1500, socket-weld ends, butt-weld ends
Body Material : Alloy steel for high temperature service with wear-resistant titanium alloy nozzle stem and seat

Gestra BK 212 DN15(1/2″)-DN25(1″) Max Diff. Pressure : 275 Bar
End connections: Flange CL1500/CL2500, Socket-weld ends, butt-weld ends
Body Material : Alloy special steel for higer pressure and temperature combinations,

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