GESTRA

GESTRA is a global leader in the design and production of valves and control systems for heat and process fluid control. We offer our customers a full range of complete systems and intelligent solutions engineered to function with maximum reliability. Our products have many practical applications and are used wherever

  • steam is generated, distributed or used
  • liquid and gaseous media flow
  • savings in energy are possible, and
  • operational reliability and environmental protection play an important role

We are your service partner for GESTRA products for steam, condensate and process liquid

Wolfgang Mehner GmbH is a longstanding, qualified trading and service partner for products "Made by Gestra". Our development started as a trading partner, to base trading and has now reached the highest status "Technology Partner". This enables us to competently sell the entire GESTRA range. We score points in the market with complete solutions paired with competent and trained expertise and advice. Customized solutions with our strong partner Gestra AG are an advantage for our customers.

Investigation of condensate technology and plant systems + repair + service for industrial electronics, condensate drains, boiler fittings are additional services from our company. The Gestra AG production program includes fittings and control technology for steam and condensate technology.

The manufacturing program includes, among other things, condensate drains, non-return valves, desalination and blowdown valves, pressure and temperature controllers, control valves, return temperature limiters, industrial electronics, for boiler equipment and boiler monitoring, level control, conductivity monitoring, oil and turbidity detectors, condensate return systems and containers.

GESTRA steam traps

UNA 1 / UNA 2

Ball-Float Traps with floating ball

Suitable for small and large condensate quantities, irrespective of the counterpressure, duplex control system with automatic ventilation, simplex control e.g. for cold condensates. Particularly suitable for controlled systems.

UNA 14 PN 25 DN 15-25 EN-JS 1049
UNA 16, 16A PN 40 DN 15-25 1.0460 / 1.0619
UNA 23 PN 16 DN 15-50 EN-JL 1040
UNA 25 PN 40 DN 15-50 EN-JL 1049
UNA 26 PN 40 DN 15-50 1.0460 / 1.0619
UNA 27 PN 63 DN 25, 40, 50 1.5419
UNA 38 PN 100 DN 15, 25, 40, 50 1.5419 / 1.7357
UNA 39 PN 160 DN 15, 25, 50 1.7335
UNA Spezial PN 16-64 DN 50-100 EN-JL 1040, 1.0619, 1.5419
UNA 25-PK PN 40 DN 40 EN-JS 1049
BK 45

Thermostatic Steam Traps with Bimetallic Regulator

Robust controller for the toughest operating conditions, insensitive against water shocks and frost, can be used as air vents.

BK 45 PN 40 DN 15-25 C 22.8 / A 105
BK 15 PN 40 DN 40-50 C 22.8 / A 105
BK 46 PN 40 DN 15-25 15 Mo 3
BK 27N PN 63 DN 15-50 15 Mo 3
BK 28 PN 100 DN 15-50 15 Mo 3
BK 29 PN 160 DN 15-25 13 CrMo 4-4 / F 12
BK 212 PN 630 DN 15-25 13 CrMo 9-10 / F 22
MK 45

Thermostatic Steam Traps with Membrane Regulator

High sensitivity, irrespective of the counterpressure, suitable for large condensate quantities

* Tandem diaphragm for low condensate quantities, can be used as a ventilator, application in pharmaceutical and food industry.

MK 35/31*, MK 35/32 PN 25 DN 10-15 C 22.8
MK 45-1*, MK 45-2 PN 40 DN 15-25 C 22.8 / A 105
MK 35/25, MK 35/2S3 PN 40 DN 25 C 22.8
MK 25/2, MK 25/2S PN 40 DN 40-40 C 22.8
MK 30/51 PN 40 DN 8-20 1.4301
MK 45 A-1, MK 45 A-2 PN 40 DN 15-25 1.4404 / 316 L
SMK 22 PN 10 DN 15-25 1.4435

GESTRA steam trap monitoring

Vaposkop (inspection glass)

Vaposkop
VK 14, VK 16 PN 10, 40 DN 15-50 EN-JL 1040, 1.0619

Test Chamber

test chamber
VKE 16, 16A PN 40 DN 15-50 1.0619, 1.4571

Steam traps remote monitoring

condensate remote monitoring

Ultrasonic sound testing instrument

VKP 10, VKP 40 und VKP 40Ex

GESTRA steam traps for special applications and tasks

AK 45

Start-up drainage

AK 45 PN 40 DN 15-25 C 22.8 / A 105
GK 11

Large condensate quantities

GK 11, 21 PN 16 DN 50-150 GG 25
TK 23, 24 PN 16, 25 DN 50-100 GS-C 25
DK 47

Universal connection

BK A/7, MK A/7, DK A/7 Class 300 1.4408, CF8M
BK 36A/7

Thermodynamic steam traps

DK 45, 47, 57 PN 40/Class 300 DN 15-25 C 22.8 Chrome steel

Drainage module

QuickEM PN 16, 40 DN 15-25
QuickEM control PN 16, 40 DN 15-25
QuickEM

Steam distributor, condensate collector

4, 8 or 12 ports      
DK 45, 47, 57 PN 40/Class 300 DN 15-25 C 22.8

GESTRA check and control valves

SBO 21

Backflow preventer

With screw sockets

SBO 11, 21, 31 PN 6 3/4"-1 1/4" MS gravity circulation lock
MB 14 PN 16 1/2"-2" MS sleeve check valve
CB 26

DISCO©-return valves CB

short face-to-face length EN 558-1

CB 14 PN 16 DN 50-300 zinc coated steel / butterfly valve NBR
CB 24S PN 16 DN 50-300 steel
CB 26 PN 40 DN 50-300 steel
CB 26A PN 40 DN 50-300 1.4571 / 1.4581
BB

DISCO©-double return valves BB

short face-to-face length EN 558-1, 11-16 (K3)

Very low pressure loss, very stable operating behaviour, with dashpot, plastic coating, soft seals optional

BB 12-24G PN 6-16 DN 150-1200 GG 25, optionally coated
BB 12-26G PN 6-160 DN 100-1200 GS-C 25
BB 12-26A PN 6-160 DN 50-1200 stainless steel
RK 41 / RK 86

DISCO©-check valve RK

short face-to-face length EN 558-1, 11-49 (K4)

Intermediate flange check valves, suitable for all mounting positions, optional with soft seal available, special treatment for food usage.

RK 70 PN 6 DN 15-200 MS
RK 71 PN 16 DN 15-100 MS
RK 41 PN 16 DN 15-200 So-MS, GG
RK 44 PN 16 DN 15-200 B 2, GG
RK 44S PN 16 DN 15-200 B 2
RK 76 PN 40 DN 15-100 chrome steel
RK 86 PN 40/Class 300 DN 15-200 chrome steel
RK 86A PN 40/Class 300 DN 15-200 1.4408 / CF8M
RK 16A PN 40 DN 15-100 1.4571
RK 49 PN 160 DN 15-200 1.4581, 1.7357
RK 29A PN 160 DN 15-200 1.4571
V 725 / 5801 / Clorius

GESTRA-control valves

Mechanical control valves

Control valve with electric or pneumatic drive

V 725 PN 40 DN 15-100 GS-C 25

Mechanical pressure regulator without auxiliary power

5801 PN 16-40 DN 15-200 GGG 40.3, GS-C 25

Mechanical overflow control without auxiliary power

5610 PN 16-40 DN 15-100 GGG 40.3, GS-C 25

Mechanical temperature control without auxiliary power

Clorius PN 16-40 DN 15-150 RG, GG-25, GGG 40.3, GS-C 25

Equipment for steam and hot water generator

PN 40-PN 320

Conventional

PN 40-160 limit level  
Water level limiter NRG 16-50 to NRG 19-50 / NRS 1-50
High water alarm NRG 16-51 to NRG 19-51 / NRS 1-51
PN 40-250 control level NRG 26-11 / NRR 2-2
LD 144 / KS 92-1
Limit temperature TRG 5-53 to 5-57 / TRS 5-6
Measure conductivity / desalination  
PN 40-160

PN 40-63
LRG 16-4 to 19-1 / LRR 1-5 /URS 2
LRGT 16-1 to 17-1 / KS 90
Desalination PN 40-320 electrically BAE 46 to BAE 211
Blowing-down PN 40-250 manually PA 46 to PA 111
pneumatically MPA 46 to 110

BUS-technology

PN 40-320 limit level  
Water level limiter NRG 16-40 to 111-40 / NRS 1-40
High water alarm NRG 16-41 to 19-41 / NRS 1-41
PN 40-250 control level NRG 26-40 / NRR 2-40 / URB
Limit temperature TRG 5-63 to 5-69 /
TRV 5-40 / NRS 1-40.1
Measure conductivity / desalination  
PN 40-160

PN 40-63
LRG 16-40 to 17-40 /
LRR 1-40 / URB
Desalination PN 40-320 electrically BAE 46 to BAE 211
Blowing-down PN 40-250 pneumatically MPA 46 to 110

GESTRA control technology

NRGS 16-1

Level controlling

In condensate and feed water tanks, etc.

NRG 11-1, PN 6, G1, 4 switching points, PP on/off, flooding, dry run

NRGS 16-1, PN 40, G1, 4 switching points

NRG 11-2, PN 6, G1, 3 switching points, PP on/off, lack of water for low pressure steam boilers up to 0.5 bar

BAE 46 / BA 46

Desalting valve

Special designs for specific tasks, i.e. low-noise and low-wear level relaxation.

BA(E) 46 PN 40 DN 15-50 C 22.8
BA(E) 47 PN 63 DN 15-50 C 22.8
BA(E) 210 PN 250 DN 25 C 22.8
BA(E) 211 PN 320 DN 25 13 CrMo 4 4
ZK(E) 29 PN 160 DN 50 13 CrMo 4 4
MPA 46 / PA 46

Blow-down valve

The GESTRA security concept, i.e. boiler and spring pressure ensures a safe close and the downstream radial level nozzle for low-wear operation.

(M)PA 46 PN 40 DN 20-50 C 22.8
(M)PA 47 PN 63 DN 25, 40, 50 C 22.8
(M)PA 110 PN 250 DN 25 13 CrMo 4 4

Surveillance on contamination inleakage

surveillance

In closed loops (emergency power generators, etc.)

surveillance

In open circuits and condensate systems

There is a risk of inleakage by oils, grease, etc.:
OR 52-5, PN 10, G 3/8, GG
OR 52-6, PN 10, G 3/8, 1.4580

There is a risk of inleakage by acids, alkalis, etc.:
Electrode LRG 12-1, PN 10, G 11/4
Transmitter LRT 1-6b
Limit switch URS 2

 

GESTRA systems engineering

PWT-XPS

Heat transfer system type PWT-XPS

The GESTRA heat transfer system consisting of a plate heat exchanger XPS in fully welded version in the shell-&-plate design and is equipped with the following components: on the steam side with blocking valve, strainer and electric control valve with safety reset and on the condenser side with pumping condensate drain, check valve, blocking valve.

Measuring and control technology consists of: Safety temperature limiter, safety pressure limiter, temperature sensor, thermostat, thermometer, manometer and safety valve. The system is ready for connection mounted and wired and is delivered on a stable base frame.

SDL

Condensate tank type SDL

Cylindrical condensate collecting tanks are designed as standard version for condensate flow rates up to 30 t / h and an operating pressure of 4 bar Max. Higher pressures and pressure sets are available on request. There are containers in lying and standing versions. They are equipped with two adjacent condensate pumps, bimetallic dial thermometer, valve submersible indicator, GESTRA level controller and level electrodes for automatic operation of pumps, check valves, safety valve, anti-vacuum valve, vents, shut-off devices, high pressure centrifugal pumps, manometer and control cabinet to the pump control assembled ready for connection.

Steam converters, pure steam generator
Steam converters, pure steam generator

Steam converters, pure steam generator

Steam converters produce saturated steam for a secondary system of steam from steam or hot water. Steam generators used mainly for the production of pure steam, where no harmful substances, such as hydrazine, may be included. Applications are e.g. for sterilizing equipment in hospitals, for steam and dry chambers in the food processing, for steam heating systems, for the production of distillates etc. Pure steam systems are available with mechanical, electrical or electro-pneumatic heating steam control.

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