Brass
Safety Relief Valves
We hold in stock a large range of safety relief, overflow and pressure control valves suitable for boiler, heating, steam, water, oil, process, air and gas applications. Our extensive stocks of safety relief valves are unrivalled and include standard, high and full lift valves, in brass, bronze, iron, steel and stainless steel. All safety relief valves are set to your required blow off pressure and supplied with a test and conformity certificate. We also offer an overhaul, resetting and testing service of your existing valves.
Safety Relief Valve – Types
Safety Relief Valve – Applications & Duties
Safety Relief Valve – Brands
Globe Valves
Industrial & HVAC Globe Valves
Johnson Valves offer a range of screw lift and screw down non-return (SDNR) globe valves in various construction materials allowing them to be used in many applications such as boilerhouse, steam, heating & air conditioning, water distribution & treatment, agricultural, compressed air, oils and gasses. We can also offer a range of manual, pneumatic, electric and hydraulic actuators to suit.
Marine Globe Valves
A range of screw lift and screw down non-return (SDNR) globe valves particularly suited for marine applications such as ballast systems, oil cargo pumping systems and shipside duties. They have type approvals by Lloyds, DNV, B.V, RINA, ABS, GL, and on request 3.1 and 3.2 certification is available. We can also offer a range of manual, pneumatic, electric and hydraulic actuators to suit.
Globe Valve Body Materials
Globe Valve Connections & Patterns
Globe Valve Applications
SK1 – Sika Aluminium Case V-Shaped Type Thermometers – Straight Pattern
Sika thermometers represent the highest quality available in direct mounting industrial thermometers used in many applications.
Type & Mounting
V-Shaped • Straight Pattern • Direct Mounting • Various Threads (see datasheet)
Case Length
110mm (Type 174B) • 150mm (Type 271B) • 200mm (Type 291B)
Immersion Length
30mm • 40mm • 63mm • 100mm • 160mm • 250mm
Duty
Industrial • Marine
Materials
Aluminium Case • Brass Immersion Tube* • Glass Insert
Temperature Ranges
From -30 to +250°C (see datasheet for ranges)
Accuracy & Approvals
DIN 16195 • DNV-GL Type Approved
* Option of stainless steel & special brass for seawater duty
JV150001 – Brass Strainer
The JV150001 is an economical WRAS approved brass Y-type strainer with a stainless steel screen ideally suited for water applications to protect meters, pumps, valves and other pipeline equipment.
Type
Y-Type
Size & Connections
6mm (1/4″) to 100mm (4″) • BSPP
Duty
Air • Inert Gases • Oil • Water • Steam
Materials
Brass Body • Stainless Steel Filter Screen
Pressure Rating
16 bar
Temperature
-10°C to 180°C
Compliance & Approvals
WRAS Approved (Art 520 – 1/4″ to 2″ only)
BPT13S – Spirax Sarco Brass Balance Pressure Thermostatic Steam Trap – Threaded
Manufactured by Spirax Sarco, the BPT13S straight balanced pressure thermostatic steam trap adjusts automatically to varying steam pressures and has excellent air venting characteristics during plant start-up and during normal operation.
Type
Balanced Pressure Thermostatic • Angled Pattern
Size & Connections
15mm (1/2″) to 20mm (3/4″) • BSP Threaded
Duty
Steam
Materials
Brass Body • Stainless Steel Internals
Max Working Pressure
13 Bar
Max Working Temperature
250°C
BPT13A – Spirax Sarco Brass Balance Pressure Thermostatic Steam Trap – Threaded
Manufactured by Spirax Sarco, the BPT13A angled balanced pressure thermostatic steam trap adjusts automatically to varying steam pressures and has excellent air venting characteristics during plant start-up and during normal operation.
Type
Balanced Pressure Thermostatic • Angled Pattern
Size & Connections
15mm (1/2″) to 20mm (3/4″) • BSP Threaded
Duty
Steam
Materials
Brass Body • Stainless Steel Internals
Max Working Pressure
13 Bar
Max Working Temperature
250°C
SG – Spirax Brass Single / Double Window Sight Glass
Manufactured by Spirax Sarco, the SG sight glass is robustly manufactured and is suitable for detecting flow of many industrial fluids.
Type
Straight Through • Single or Double Window Sight Glass
Size & Connections
10mm (3/8″) to 50mm (2″) • BSP Threaded (NPT on request)
Duty
Air • Oil • Water • Liquids compatible with materials
Materials
Brass Body (10-25mm) • Bronze Body (32-50mm) • Toughened Soda Lime Glass
Max Working Pressure
5 Bar
Max Temperature Range
148°C @ 13.5 Bar • 90°C @ 5 Bar
AV13 – Brass Spirax Air Vent For Steam Systems
Manufactured by Spirax Sarco, the AV13 is a maintainable balanced pressure thermostatic air vent with angled connections. This automatic air vents opens to air and gases but shuts against steam. It discharges air at full bore on start-up and opens during running whenever air collects, irrespective of the steam pressure.
Size & Connections
10mm (3/8″) to 20mm (3/4″) • BSP Threaded (NPT on request)
Duty
Steam Systems
Materials
Brass Body • Stainless Steel Internals
Max Working Pressure
13 Bar @ 220°C
Max Working Temperature
-20 to 250°C
AE30 – Brass Spirax Automatic Air Eliminator For Liquid Systems
Manufactured by Spirax Sarco, the AE30 is a robustly constructed air eliminator/vent particularly suited for industrial applications. Available with an optional check and lockshield isolation valves.
Size & Connections
15mm (1/2″) • BSP Threaded
Duty
HVAC • Industrial
Materials
Brass Body • Stainless Steel Float
Max Working Pressure
10 Bar
Max Working Temperature
0 to 110°C
813 – Goetze Atmospheric Discharge With Safety Shroud Brass Safety Relief Valve
The 813 is a quality, high performance safety relief valve suitable for the protection of pressure tanks and systems for air and inert gas applications. The valve has a shroud fitted which provides extra safety when relieving media with liquid, granular or dusty particles. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.
Type
Atmospheric Discharge • Safety Stroud
Size & Connections
15mm (1/2″) to 50mm (2″) BSP
Duty
Air Compressors & Systems • Inert Gases • Granula & Dusty Media
Materials
Brass Body • FKM Seat Seal (PTFE option)
Set Pressure Range
0.2 to 6 bar
Temperature
FKM Seal : -20°C to 200°C • PTFE Seal : -60°C to 225°C
Compliance & Approvals
BS6759 Part 2 • TÜV • BSEN ISO 4126
812 – Goetze Atmospheric Discharge High Performance Brass Safety Relief Valve
The 812 is a quality, high performance safety relief valve suitable for the protection of pressure tanks and systems for air and inert gas applications. This valve has a high discharge rate making it suitable for high capacity applications. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.
Type
Atmospheric Discharge suitable for air compressor duties
Size & Connections
15mm (1/2″) to 50mm (2″) BSP
Duty
Air Compressors & Systems • Inert Gases
Materials
Brass Body • FKM Seat Seal (<30 bar) • PTFE Seat Seal (30> bar)
Set Pressure Range
15mm-40mm : 0.2 to 50 bar • 50mm : 0.2 to 30 bar
Temperature
FKM Seal : -20°C to 200°C • PTFE Seal : -60°C to 225°C
Compliance & Approvals
BS6759 Part 2 • TÜV • BSEN ISO 4126
810 – Goetze Atmospheric Discharge Brass Safety Relief Valve
The 810 safety relief valve is suitable for the protection of pressure tanks and systems for air and inert gas applications. The valve has a high discharge capacity making it possible to use this small and inexpensive safety relief valve, even for large pressure tanks. Supplied set to your requirements with a certificate confirming lift pressure at no additional cost.
Type
Atmospheric Discharge suitable for air compressor duties
Size & Connections
6mm (1/4″) to 50mm (2″) BSP
Duty
Air Compressors & Systems • Inert Gases
Materials
Brass Body • FKM Seat Seal (<25 bar) • PTFE Seat Seal (25> bar)
Set Pressure Range
6mm-25mm : 0.2 to 50 bar • 32mm-50mm : 0.2 to 16 bar
Temperature
FKM Seal : -20°C t 200°C • PTFE Seal : -60°C to 225°C
Compliance & Approvals
BS6759 Part 2 • TÜV • BSEN ISO 4126
JV060001 – Brass Gate Valve
WRAS approved, full bore gate valve ideally suited for cost-effective isolation of a variety of fluids.
Type
Wedge • Screwed Bonnet • Non-Rising Stem
Size & Connections
6mm (1/4″) to 100mm (4″) BSPT Female
Duty
Air • Inert Gas • Oil • Water
Materials
Brass Body, Wedge & Stem • PTFE Gasket & Packing
Pressure Rating
PN20
Temperature
Liquids: -20 to 110°C
Compliance & Approvals
WRAS Approved (BW-G06 V2015)
JV080001 – Brass Spring-Loaded Check (Non-Return) Valve – NBR Seals
An economical spring-loaded non-return valve with a brass body and NBR seals.
Type
Spring Loaded (In-Line)
Size & Connections
6mm (1/4″) to 100mm (4″) BSPP Female
Duty
Air • Inert Gas • Oil • Water
Materials
Brass Body • POM Disc • NBR Seals
Pressure Rating
6-25mm PN16 • 32-50mm PN10 • 65-100mm PN8
Temperature
-10°C to 95°C
JV090002 – DZR Brass Ball Valve
A WRAS approved (Isis range) economical and versatile full bore ball valve suitable for water and marine applications. Manually operated, supplied with a lever.
Type
Two-Piece • Full Bore • Lever Operated
Size & Connections
6mm (1/4″) to 50mm (2″) BSP Female
Duty
Air • Gas • Oil • Water
Materials
DZR Brass Body • PTFE Seat • DZR Brass Ball
Pressure Rating
6-10mm PN50 • 15-50mm PN25
Temperature
-15°C to 120°C (Dependent on pressure)
Compliance & Approvals
WRAS • DNV GL Type Approved
JV090001 – Brass Nickel Plated Ball Valve
WRAS approved for water duty and BSI EN 331 for gas service (Derby range). Manually operated, supplied with a yellow lever.
Type
Two-Piece • Full Bore • Lever Operated
Size & Connections
6mm (1/4″) to 100mm (4″) BSP Female
Duty
Air • Gas • Oil • Water
Materials
Nickel Plated Brass Body • PTFE Seat • Chrome Plated Brass Ball
Pressure Rating
6-15mm PN40 • 20-25mm PN32 • 32-65mm PN25 • 80-100mm PN16
Temperature
Liquids: -20°C to 110°C • Gas: -20°C to 70°C (Dependent on pressure)
Compliance & Approvals
WRAS* • BSI Gas Approved to BS EN 331* (*6-50mm only)