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Products A to Z

Actuators
- Actuators – Accessories
- Actuators – Electric
- Actuators – Electric Spring Return
- Actuators – Hydraulic
- Actuators – Manual
- Actuators – Pneumatic
- Actuators – Scotch Yoke
Air Vents, Heads & Eliminators
ANSI Valves
- ANSI Valves – Ball Valves
- ANSI Valves – Butterfly Valves
- ANSI Valves – Check Valves
- ANSI Valves – Gate Valves
- ANSI Valves – Globe Valves
- ANSI Valves – Marine
- ANSI Valves – Strainers
ARI Valves
Ball Valves
- Ball Valve – Carbon Steel
- Ball Valves – Brass
- Ball Valves – Bronze
- Ball Valves – Butt Weld
- Ball Valves – Ductile Iron
- Ball Valves – Electrically Actuated
- Ball Valves – Electrically Actuated – Spring Return
- Ball Valves – Flanged
- Ball Valves – Gas Service
- Ball Valves – Lever Operated
- Ball Valves – Marine
- Ball Valves – Pneumatically Actuated
- Ball Valves – Socket Weld
- Ball Valves – Stainless Steel
- Ball Valves – Threaded
Bellows & Expansion Joints
- Expansion Joints – Air, Gasses & Oil
- Expansion Joints – Butt Weld
- Expansion Joints – Chemical & Acids
- Expansion Joints – Flanged 130mm FxF
- Expansion Joints – Flanged Various FxF
- Expansion Joints – High-Temperature
- Expansion Joints – HVAC & Water
- Expansion Joints – Metal Bellows
- Expansion Joints – Threaded
- Expansion Joints – WRAS, ACS & FDA
Butterfly Valves
- Butterfly Valves – Bronze
- Butterfly Valves – Carbon Steel
- Butterfly Valves – Cast & Ductile Iron
- Butterfly Valves – Double Flanged
- Butterfly Valves – Double Offset
- Butterfly Valves – Electrically Actuated
- Butterfly Valves – EPDM Lined
- Butterfly Valves – Gas Service
- Butterfly Valves – High Performance
- Butterfly Valves – Industrial & HVAC
- Butterfly Valves – Lugged & Tapped
- Butterfly Valves – Marine
- Butterfly Valves – Mono Flanged
- Butterfly Valves – NBR Lined
- Butterfly Valves – Pneumatically Actuated
- Butterfly Valves – PTFE Lined
- Butterfly Valves – Silicone Lined
- Butterfly Valves – Stainless Steel
- Butterfly Valves – Viton Lined
- Butterfly Valves – Wafer Multi-Flange
- Butterfly Valves – WRAS Approved
Check Valves
- Check Valves – Ball & Lift
- Check Valves – Brass
- Check Valves – Bronze
- Check Valves – Cast & Ductile Iron
- Check Valves – Disc
- Check Valves – Dual Plate
- Check Valves – Flanged
- Check Valves – Gas Duty
- Check Valves – HVAC & Industrial
- Check Valves – Marine
- Check Valves – Socket Weld
- Check Valves – Solvent Weld
- Check Valves – Spring Loaded
- Check Valves – Stainless Steel
- Check Valves – Steel
- Check Valves – Swing (Flap)
- Check Valves – Threaded
- Check Valves – UL/FM Approved
- Check Valves – Wafer (Multi-Flange)
- Check Valves – WRAS Approved & Water Works
Class 800 Valves & Strainers
Controls Valves
Data Loggers & Displays
Diaphragm Valves
Fire Hydrant, Deck & Landing Valves
- Fire Hydrant (Deck) Valves – Marine
- Fire Hydrant (Landing) Valves – Gate
- Fire Hydrant Valves – BSP/NST Outlet
- Fire Hydrant Valves – Diaphragm
- Fire Hydrant Valves – Globe
- Fire Hydrant Valves – Instantaneous Outlet
- Fire Hydrant Valves – Landing (Dry Riser)
- Fire Hydrant Valves – Pressure Regulating
- Fire Hydrant Valves – Storz Outlet
Float Valves
Flow Switches
Frese Valves
Gas Meters
- Gas Meters – Diaphragm
- Gas Meters – Pulse Modules
- Gas Meters – Rotary
- Gas Meters – Turbine Quantometer
Gas Valves
- Gas Valves – Ball Valves
- Gas Valves – Butterfly Valves
- Gas Valves – Check (Non-Return) Valves
- Gas Valves – Gate Valves
- Gas Valves – Solenoid Valves
Gate Valves
- Gate Valves – Actuated
- Gate Valves – Brass
- Gate Valves – Bronze
- Gate Valves – Flanged
- Gate Valves – Gas Service
- Gate Valves – Industrial & HVAC
- Gate Valves – Iron
- Gate Valves – Knife Gate Valves
- Gate Valves – Lever Operated
- Gate Valves – Marine
- Gate Valves – Socket Weld
- Gate Valves – Stainless Steel
- Gate Valves – Steel
- Gate Valves – Threaded
- Gate Valves – UL Listed/FM Approved
- Gate Valves – Water Works
Globe Valves
- Globe Valves – Angled
- Globe Valves – Bronze
- Globe Valves – Flanged DIN & ANSI
- Globe Valves – Flanged JIS
- Globe Valves – Industrial & HVAC
- Globe Valves – Iron
- Globe Valves – Marine
- Globe Valves – Screw Down Non-Return (SDNR)
- Globe Valves – Screw Lift (SL)
- Globe Valves – Screwed
- Globe Valves – Self-Closing
- Globe Valves – Socket Weld
- Globe Valves – Stainless Steel
- Globe Valves – Steel
- Globe Valves – Straight
GWF Meters
- GWF Meters – GWFCoder® Mbus
- GWF Meters – Multi Jet Water Meters
- GWF Meters – Single Jet Water Meters
- GWF Meters – Ultrasonic Water Meters
- GWF Meters – Woltmann Hot Water Meters
Heat & Energy Meters
- Heat & Energy Meters – Single Jet
- Heat & Energy Meters – Ultrasonic
Hydrogen Valves
JIS Valves
- JIS Valves – Butterfly Valves
- JIS Valves – Check Valves
- JIS Valves – Gate Valve
- JIS Valves – Globe Valves
- JIS Valves – Storm Valves
Meter Boxes & Manifolds
Mud Boxes
Needle Valves
Oil Meters
- Oil Meters – Domestic & Residential
- Oil Meters – Marine & Industrial
Overflow & Pressure Control Valves
Parallel Slide Valves
Pneumatic Cylinders
Pneumatic Valves
Pressure Gauges
Pressure Reducing Valves
- Pressure Reducing Valves – Air & Gases
- Pressure Reducing Valves – Bailey Birkett
- Pressure Reducing Valves – Direct Acting
- Pressure Reducing Valves – Flanged
- Pressure Reducing Valves – HVAC & Water
- Pressure Reducing Valves – Oil
- Pressure Reducing Valves – Pilot Operated
- Pressure Reducing Valves – Spirax Sarco
- Pressure Reducing Valves – Steam
- Pressure Reducing Valves – Threaded
- Pressure Reducing Valves – WRAS Approved
Pressure Switches
Pulse & Communication Modules
Quick Closing Valves
Safety Relief Valves
- Safety Relief Valves – Air & Gasses
- Safety Relief Valves – Atmospheric
- Safety Relief Valves – Bailey Birkett
- Safety Relief Valves – Cryogenic & Food
- Safety Relief Valves – Double
- Safety Relief Valves – Enclosed Side Discharge
- Safety Relief Valves – Goetze
- Safety Relief Valves – Heating & Water
- Safety Relief Valves – High Capacity
- Safety Relief Valves – In-Line
- Safety Relief Valves – Johnson Valves
- Safety Relief Valves – Medium Capacity
- Safety Relief Valves – Nabic
- Safety Relief Valves – Oxygen
- Safety Relief Valves – Pressure & Temperature
- Safety Relief Valves – Process & Oil
- Safety Relief Valves – Steam & Boilerhouse
- Safety Relief Valves – Wade
Sea Chests
Self Closing Valves
Sight & Flow Indicators
Sika Thermometers
Solenoid Valves
- Solenoid Valves – Asco
- Solenoid Valves – Cryogenic
- Solenoid Valves – Gas
- Solenoid Valves – General Purpose
- Solenoid Valves – Normally Closed
- Solenoid Valves – Normally Open
- Solenoid Valves – Pressure Assisted
- Solenoid Valves – Spool
- Solenoid Valves – Steam
- Solenoid Valves – WC Flushing
- Solenoid Valves – WRAS Approved
- Solenoid Valves – Zero Pressure
Sounding Cocks
Spring Return Electrically Actuated Valves
Steam Traps
- Steam Traps – Brass
- Steam Traps – Carbon Steel
- Steam Traps – Flanged
- Steam Traps – Float Type
- Steam Traps – Iron
- Steam Traps – Spirax Sarco
- Steam Traps – Stainless Steel
- Steam Traps – Thermodynamic
- Steam Traps – Thermostatic
- Steam Traps – Threaded
Storm Valves
Strainers & Filters
- Strainers – ANSI
- Strainers – Brass
- Strainers – Bronze
- Strainers – Flanged
- Strainers – Foot Valve
- Strainers – Industrial & Process
- Strainers – Iron
- Strainers – Marine
- Strainers – Socket Weld
- Strainers – Stainless Steel
- Strainers – Steel
- Strainers – Threaded
- Strainers – WARS Approved
Tank Level Gauge & Indicators
Teekay Couplings
Temperature Controls & Valves
Thermometers & Temperature Gauges
UL/FM Fire Protection Valves
Vacuum Breakers
Water Meters
- Water Meters – Boundary Box & Manifold
- Water Meters – Combination
- Water Meters – Domestic & Commercial
- Water Meters – Electromagnetic
- Water Meters – Electronic Hybrid
- Water Meters – Fittings
- Water Meters – Flanged Bulk
- Water Meters – Hot Water
- Water Meters – Insulation Jackets
- Water Meters – Irrigation & Dirty Water
- Water Meters – Manifold
- Water Meters – Meter Boxes
- Water Meters – Multi Jet
- Water Meters – Positive Displacement
- Water Meters – Pulse & M-Bus Modules
- Water Meters – Riser & Down Pipe
- Water Meters – Single Jet
- Water Meters – Ultrasonic
- Water Meters – Woltmann Turbine
Water Works Valves

« Steam & Boilerhouse Safety Pressure Relief Valves

In-Line Discharge Overflow & Pressure Controls Valves »

Enclosed Side Discharge Safety Pressure Relief Valves

These safety pressure relief valves have threaded or flanged enclosed side outlets to safely discharge the excess pressure away from the system.

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© 2007-2025, G.J. Johnson & Sons Ltd, Unit 7 Trinity Court, Calmore Industrial Estate, Totton, Southampton, UK, SO40 3WX

M-Bus (Meter-Bus) Protocol

Communications Output

M-Bus (Meter-Bus) is a European standard (EN 13757-2 physical and link layer, EN 13757-3 application layer) for the remote reading of water, gas and electricity meters. The M-Bus interface has two wires, making it an easy and cost-effective AMR solution. A radio variant of M-Bus (Wireless M-Bus) is also specified in EN 13757-4.

Electromagnetic Water Meters

The Electromagnetic water meter (Mag Meter) does not have any moving parts and is ideal for potable and wastewater applications or any dirty liquid which is conductive or water based. A magnetic field is applied to the metering tube, which results in a potential difference proportional to the flow velocity.

Woltmann Turbine Helical Vane Meters

Woltmann meters comprises of a rotor with helical blades inserted axially in the flow, much like a ducted fan; they can be considered a type of turbine flow meter. They are commonly referred to as helix meters and are usually used to measure bulk flows.

Combination Water Meters

Combination water meters comprises of a bulk Woltmann insert and a low-flow Volumetric insert or meter, flow is diverted between them by a by-pass valve that is set at a predetermined flow rate. This allows the combination meter to have a very large measurement range.

WRAS Approved Product

Whole products such as valves, boilers & showers undergo mechanical and water quality testing. This type of approval demonstrates full compliance with the requirements of the regulations and bye-laws, provided the fitting is installed according to any conditions given with the approval.

BSI BS EN 331 Approved Gas Product

BS EN 331:2015 specifies the characteristics for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking provisions. It applies to metallic valves not directly buried for domestic and commercial installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437) and working up to 0,2 × 105 Pa, 0,5 × 105 Pa, 1 × 105Pa, 5 × 105 Pa and 20 × 105Pa and with temperature limits from – 5 °C or -20 °C to + 60 °C.

DNV-GL Type Approved Product

Classification, verification, risk management, and technical advisory to the maritime industry on safety, enhanced performance, fuel efficiency, etc. As a classification society, DNV GL sets standards for ships and offshore structures – known as Class Rules. They comprise safety, reliability and environmental requirements that vessels and other offshore mobile structures in international waters must comply with. DNV GL is authorized by 130 maritime administrations to perform certification or verification on their behalf.

Non-electrical devices and components group II

ATEX II 2 GD c T2 Non-electrical Valves

EC-Certificate is issued according to Article 8(1) b) ii) of Council Directive 94/9/EC for equipment and protective systems intended for use in potentially explosive atmospheres (ATEX).

Measurement Instrument Directive

Compliant Water Meter

Meters conform to the European Council Directive on Measurement Instruments which supersedes the Metrological Classes A, B, C etc. The permissible error limits are regulated across Europe by the MID, water meters may measure with an accuracy of +/-5% in the lower flow range and +/-2% in the permanent load range.

Elster Water Metering (Kent Meters)

Elster Water Metering (formally Kent Meters and now part of Honeywell) are an industry leader in the manufacture of water meters, which includes high accuracy mechanical meters, fully electronic water meters and Smart metering solutions for residential, commercial and industrial sectors.

Volumetric Positive Displacement Meter

Based on the volumetric rotary piston measurement principle, these meters offer the very highest levels of reading accuracy, even at the lowest flow rate. Optimum accuracy is maintained whether the meter is installed horizontally, vertically or on an incline.

ISO5211 Pad Mount for Actuator Operation

The top flange and drilling to ISO5211 specifications offer the widest possible selection of actuation options, as well as direct mount of pneumatic actuators and accessories.

Fire Safe Approved to API 607 4th Edition

Valves have been qualified by testing to API standards 607, 4th Edition. The valve design incorporates a secondary metal seat in the body, providing the required shutoff should the primary seats be destroyed by fire.

3.1 & 3.2 Material Certification (on request)

Many of our marine valves can be pressure tested, witnessed by a classification society and supplied with 3.1 & 3.2 certifications on request, these include Lloyd’s Register of Shipping, DNV-GL (Det Norske Veritas), RINA, Bureau Veritas, Germanischer Lloyds, NK and ABS (American Bureau of Shipping). Please contact sales with your requirements.

Multi-Jet Warm Water Meter

Multi-jet meters use multiple ports surrounding an internal chamber to create multiple jets of water against an impeller, whose rotation speed depends on the velocity of water flow. For best accuracy, they should be installed horizontally.