GESTRA Check & Non-Return Valves

The RK 70 is especially suited for heating and hot-water installations.

Gravity Circulation Checks and Non-Return Valves

for sanitary and HVAC (heating, venting and air-conditioning) applications

Types:

SBO

to prevent gravity circulation

RK70

especially suited for heating and hot-water installations

RK71

for liquids, gases, vapours. Application as gravity circulation check, vacuum breaker, breather, foot valve, pressure-relief valve or pressure-maintaining valve

MB14

for liquids, gases, vapours. Application as gravity circulation check, vacuum breaker, breather, foot valve, pressure-relief valve or pressure-maintaining valve


The RK76 for industrial applications.

DISCO®-Non-Return Valves

for Industry and HVAC

For liquids, gases, vapours. Application as gravity circulation check, vacuum breaker, breather, foot valve, pressure-maintaining valve, check valve.

Versions:

RK41

Especially suited for heating installations

RK44
RK44S

For sea water and drinking water

RK76

For industrial applications


RK 86 A especially suited for low temperatures, aggressive fluids, boiler feedwater lines, and otherindustrial applications.

Non-Return Valves RK86 and RK86A

The All-Rounder for Industrial Applications

For liquids, gases, vapours. Application as gravity circulations check, vacuum breaker, breather, foot valve, RK 86 40 pressure-maintaining valve, check valve.


The RK16 A for aggressive media and temperatures down to minus 200°C.

Non-Return Valves

for Special Applications

Versions:

RK16 A

For aggressive media and temperatures down to minus 200°C

RK49

For high pressures (160 bar) and temperatures up to 550°C

RK29

For high pressures and special tasks


DISCOCHECK Dual-Plate Check Valves BB

DISCOCHECK Dual-Plate Check Valves BB

For liquids, gases, vapours

In heating, air-conditioning, water-supply and cooling installations, steam and con- densate systems, oil pipelines and natural gas lines.

For use with sea water, in sewage works, downstream of fans and compressors. For drinking water: with lining, and for sea water with rubber lining.

With adjustable dampers for installations with waterhammer problems. Metal-to-metal or soft seat (ePDM, FPM).

Materials:

BB…G

Grey cast iron

BB…C

Carbon steel

BB…A

Stainless steel


DISCO Swing Check Valves CB

DISCO Swing Check Valves CB

For liquids, gases, vapours


WB26 for liquids, gases and vapours.

Swing Check Valves WB

without spring

Versions:

WB26

for liquids, gases and vapours

WB26 A

for aggressive fluids

WB24 S

for sea water


NAF-Check Valve

NAF-Check Valves

for liquids, gases, vapours, aggressive fluids and low temperatures

Versions:

Steel

down to -10°C

Stainless steel

down to -40°C

High-temperature steel

down to -10°C

GESTRA stop valves GAV

in straight seat design

These valves are especially suitable for shutting off and throttling steam, condensate from steam, oil and air.

They are ideally designed for installation upstream and downstream of steam traps. They are situated in bypass pipes, in controlled systems with temperature regulators or pressure reducing valves, and upstream of pumps.

GESTRA Strainers GSF and SZ

Protective valve for dirt-sensitive equipment

The strainer, which is made of corrosion-resistant stainless steel, functions as a protective valve in all kinds of pipe, upstream of devices that are sensitive to dirt.

For fluids, gas, steam and aggressive media.

DESIGN VERSIONS:

GSF
Y-seat strainers with flange or socket-type connection

SZ
Intermediate flange strainers

DISCOCHECK dual-plate check valve BB with dampers

For special applications

Pump shutdowns and malfunctions can cause flow decelerations in complex pipe systems, which subsequently jeopardise the process or individual pipe sections.

If liquid-bearing pipe systems are at risk of water hammer, the BB dual-plate check valve with adjustable dampers is the ideal solution.

A medium in the damping cylinders slows down the valves on the last 15° of their closing stroke, making the valve disks close more slowly.
This prevents problems due to water hammer.

GESTRA AG products

Disc check valve / for HVAC / brass

Disc check valve / for HVAC / brass SBO, RK, MB14 series

Disc check valve / for industrial applications / for HVAC

Disc check valve / for industrial applications / for HVAC RK series

Disc check valve

Disc check valve RK86 series

Swing check valve / for steam / for gas

Swing check valve / for steam / for gas BB series

Swing check valve

Swing check valve CB series

Swing check valve

Swing check valve WB series

Swing check valve / stainless steel

Swing check valve / stainless steel NAF

Condensate drain / automatic / thermostatic / bimetallic

Condensate drain / automatic / thermostatic / bimetallic BK series

Condensate drain / automatic / thermostatic

Condensate drain / automatic / thermostatic MK series

Condensate drain / automatic / variable-area / high-pressure

Condensate drain / automatic / variable-area / high-pressure UNA series

Condensate drain / automatic / float / high-capacity

Condensate drain / automatic / float / high-capacity UNA 25 – PK

Condensate drain / automatic

Condensate drain / automatic

Condensate drain / manual / heat-recovery

Condensate drain / manual / heat-recovery DK series

Condensate drain / automatic / compact

Condensate drain / automatic / compact

Condensate drain / automatic

Condensate drain / automatic SMK series

 Temperature control valve / for water

Temperature control valve / for water CW, MCW, BW series

 Piston valve / pressure-control / temperature control / for steam

Piston valve / pressure-control / temperature control / for steam 5801, 5610

Electrically-operated valve / pneumatic-operated / regulating / for water

Electrically-operated valve / pneumatic-operated / regulating / for water ZK, V725 series

 Safety valve

Safety valve GSV series

 Liquid filter / strainer / cylindrical / Y

Liquid filter / strainer / cylindrical / YGSF, SZ

 Shut-off safety valve

Shut-off safety valve GAV series

DISCO non-return valves RK 76 – RK 86

For industrial applications

The RK 76 is designed for pressure range PN 6-40, ASME Class 150/300.

It can be installed in any position and is suitable for liquid, gas and steam.

DISCO non-return valves RK 86

The RK 86 series with patented self-centring body is designed for pressure range PN 6-40, ASME Class 150/300. For installation in any position.

It can be used for liquid, gas and steam as a gravity circulation check,

Gravity circulation checks SBO

for sanitation and heating

SBO gravity circulation checks are installed downstream of circulating pumps in heating and hot water systems, to prevent gravity circulation.

They replace the isolating valve in the feed line and remain in the pipe if a pump is removed, so that the system no longer needs to be fully drained.

There are three connections for different pump designs up to PN 6.

Steam traps for special tasks AK 45

The primary task of steam traps is to remove condensate from steam-operated heat transfer systems in the optimum way, so that these systems can function without problem for a long time. This involves a variety of requirements, for which different steam trap systems are available.

USE

AK 45
Condensate drain valve for discharging condensate from steam systems on start-up and for draining remaining condensate when the system is stopped. With integrated dirt trap (Y-strainer) and hand-purging knob. Closing pressure 0.8 bar as standard.

UBK 46
Steam traps for low-pressure steam heaters.

MK 20
Kondensatableiter für Niederdruck-Dampfheizungen.

TK 23, TK 24
Steam traps with thermostatic capsule for thermostatic pilot control, for removing large and continuous condensate flowrates

GK 11, GK 21
Steam traps with stage nozzle for discharging larger condensate flowrates. With integrated Vaposkop for optimum trap adjustment.

UNA 14P
Steam traps with ball float and rolling ball seal for removing fluids from compressed air or gas.

Steam trap testing equipment VKP 10, VKP 40 plus, VKP 40 plus Ex

Prevent steam leakage and banked-up condensate with state-of-the-art technology

Steam traps are subject to wear. This in turn leads to loss of steam or banking-up of condensate. Experience shows that the failure rate of faulty steam traps is as much as 25 %. This failure rate can be slashed to less than 5 % with annual inspections and the necessary maintenance.

USE

Steam traps of all makes can be inspected by ultrasonic measurement during ongoing operation. The measured ultrasonic spectrum is shown on a display unit as needle deflection on a scale, or as a curve on a graph, depending on the testing system used.

Compact steam traps MK 36A

Steam traps for universal connectors

Compact, maintenance-free steam traps of stainless steel for connection to universal connectors. These steam traps can be secured with just two screws. Installation and removal is therefore extremely quick and simple.

For connection to universal connectors, we offer:

  • Steam traps with membrane regulator – MK 36A-71/-72
  • Bimetallic steam traps – BK 36A-7
  • Thermodynamic steam traps – DK 36A-7
  • Inverted bucket steam traps – IB 16A-7

The types of connector are:

  • Simple – UC 36
  • With dirt strainer (Y-strainer) – UCY 36
  • With integrated stop valves, test and drainage valve – TS 36

USE

Suitable for discharging small to medium volumes of condensate. Ideal for draining:

  • Pipes
  • Trace heaters

Drainage module UNA 16A

Drainage module with optimum, dirt-protected positioning of the steam trap to ensure ideal operation.

 

This type of QuickEM is a preassembled drainage module in stainless steel, complete with steam trap, monitoring function and maintenance-friendly bypass. It features a UNA 16A ball-float steam trap, which works with extremely low friction and therefore requires very low actuating forces. It also promises outstanding durability.

Trap with pump function UNA 25

Valves that discharge and lift condensate Ball-float steam traps with pump function – UNA 25-PK:

These units function primarily as steam traps. The integrated, automated pump function ensures that condensate is discharged even under reduced steam pressure or high back pressure. The condensate is then pumped out of the body with the aid of booster steam.

Condensate lifter with ball float – UNA 25-PS:

The automated pump function ensures that the return of condensate is always based on demand. The condensate is pumped out of the body with the aid of booster steam.

USE

UNA 25-PK:

  • Closed-loop controlled heat exchangers, special plate-type heat exchangers with major load fluctuations during operation
  • Drainage of vacuum systems
  • Also suitable for returning condensate

UNA 25-PS:

  • For returning condensate, e.g. as an alternative to pump-driven return
  • Drainage of vacuum systems

Thermostatic steam traps SMK 22

Thermostatic steam traps with minimum stagnant area for sterile and aseptic applications

For CIP (clean-in-place) and SIP (steam-in-place) processes, recognition of the aggregate state and an adequate steam trap reaction time are crucial factors. The STERIline membrane regulators employed in the SMK series react especially quickly to changing temperatures or operating states, thanks to their design, smaller surface and low weight.

USE

Extremely responsive steam trap – especially suitable for drainage in:

  • The pharmaceutical industry
  • Pure steam and ultrapure steam applications
  • CIP processes
  • Steam-in-place (SIP) processes

Thermodynamic steam traps DK 45 / 47

Steam traps for draining steam pipes, trace heaters and steam systems

DK 47

These steam traps work on the basis of a simple thermodynamic principle. Incoming condensate lifts the valve disk of the regulator to the open position, while steam causes it to close immediately. The traps in the DK series are correspondingly simple in structure, feature a small, compact body and are low in cost.

USE

Compact steam trap for draining heating processes with small load fluctuations.
Especially recommended for use in:

  • Saturated steam pipes
  • Superheated steam pipes
  • Trace heaters
  • Air heaters
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