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Pressure Reducing Valves

Johnson Valves offer a range of direct-acting and pilot-operated industrial, domestic and HVAC pressure reducing valves suitable for water, air, gases, oil, steam and other liquids. Most of our high-quality pressure reducing valves are manufactured in the UK and EU. 

Many are approved by the Water Regulations Advisory Scheme (WRAS), DVGW & ACS for potable water duty. We can also offer valves that are International Marine Purchasing Association (IMPA) coded for marine applications.


Pressure Reducing Valves Duties

HVAC & Water Pressure Reducing Valves

HVAC & Water

Air & Gases Pressure Reducing Valves

Air & Gases

Steam Pressure Reducing Valves

Steam

Oil Pressure Reducing Valves

Oil

WRAS Approved Pressure Reducing Valves

WRAS Approved


Pressure Reducing Valves Connections & Types

Threaded Pressure Reducing Valves

Threaded

Flanged Pressure Reducing Valves

Flanged

Direct Acting Pressure Reducing Valves

Direct Acting

Pilot Operated Pressure Reducing Valves

Pilot Operated

681 – WRAS Approved Bronze Pressure Reducing Valve for Water, Air & Neutral Gases

The 681 is an IMPA coded pressure reducing valve which is suitable for water up to 95°C, compressed air, neutral gas, neutral and non-sticking liquids.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP Male Unions
Duty
Air • Neutral Gases • Water
Materials
Bronze Body • Bronze/Brass Internal Parts • EPDM Seals (FKM option)
Maximum Upstream Pressure
Up to 40 Bar (depending on version)
Downstream Pressure Range
0.5 to 15 Bar (depending on version)
Temperature
-10°C to 120°C (depending on version)
Compliance & Approvals
WRAS • ACS • DVGW • IMPA Coded
Buy 681 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases681 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases - PDF DatasheetWRAS Approved ProductIMPA Coded Product

681 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases

JV140001 – Ductile Iron Pressure Reducing Valve for Steam, Air & Neutral Gases

An economical alternative option for the Spirax Sarco BRV, it’s a compact direct-acting pressure reducing valve which is suitable for steam, air and neutral gases.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 25mm (1″) • BSP Female
Duty
Air • Neutral Gases • Steam
Materials
Ductile Iron Body • Stainless Steel Bellows, Valve, Seat & Spring
Maximum Upstream Pressure
17 Bar
Downstream Pressure Range
0.14 to 8.6 Bar
Temperature
0°C to 210°C
Compliance & Approvals
3.1 Material Cert (on request)
Buy JV140001 - Pressure Reducing Valve - Steam, Air & Neutral GassesJV140001 - Pressure Reducing Valve - Steam, Air & Neutral Gasses

JV140001 - Pressure Reducing Valve - Steam, Air & Neutral Gasses

683 – Bronze Pressure Reducing Valve for High-Pressure Water, Air & Neutral Gases

The 683 is an IMPA coded pressure reducing valve which is suitable for high-pressure water up to 95°C, compressed air, neutral gas, neutral and non-sticking liquids.

Type
Direct-Acting
Size & Connections
10mm (3/8″) to 32mm (1 1/4″) • BSP Female
Duty
Air • Neutral Gases • Water
Materials
Bronze Body • Brass Internal Parts • NBR Seals
Maximum Upstream Pressure
Up to 50 Bar (32mm – 30 bar)
Downstream Pressure Range
1.5 to 10 Bar (depending on version)
Temperature
-10°C to 95°C (depending on version)
Compliance & Approvals
IMPA Coded
Buy 683 - Pressure Reducing Valve for High-Pressure Water, Air & Neutral Gases683 - Pressure Reducing Valve for High-Pressure Water, Air & Neutral Gases - PDF DatasheetIMPA Coded Product

683 - Pressure Reducing Valve for High-Pressure Water, Air & Neutral Gases

684 – Bronze Pressure Reducing Valve for High-Capacity Liquids, Air & Gases

A high-performance and capacity bronze pressure reducing valve that is suitable for liquids, air and gases, supplied with a diaphragm as standard or an optional piston version. Pressure adjustment is carried out without tools via the ergonomically formed hand-wheel.

Type
Direct-Acting
Size & Connections
6mm (1/4″) to 50mm (2″) • BSP Female
Duty
Air • Neutral Gases • Water
Materials
Bronze Body • Brass Internal Parts • EPDM Seals (FKM option)
Maximum Upstream Pressure
Up to 60 Bar
Downstream Pressure Range
0.5 to 50 Bar (depending on version)
Temperature
-40°C to 120°C (-10 to 170°C for FKM seals)
Contact Us684 - Pressure Reducing Valve for High-Capacity Liquids, Air & Gases - PDF Datasheet

684 - Pressure Reducing Valve for High-Capacity Liquids, Air & Gases

G4-2042 – Bailey Birkett Bronze Pressure Reducing Valve for Steam, Air & Gases

Manufactured by Bailey Birkett, the G4 series of pilot operated pressure reducing valves provide extremely accurate levels of pressure regulation for steam, air and industrial gas applications. The valve relies upon a stable pressure signal from the outlet pipework in order to maintain stable control of the outlet pressure.

Type
Pilot Operated
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP Female
Duty
Air • Gases • Steam
Materials
Bronze Body • Stainless Steel Trim*
Upstream Pressure Range
0.7 to 35 Bar (dependent on duty)
Downstream Pressure Range
0.07 to 21 Bar
Temperature
-20°C to 260°C (dependent on trim, see datasheet for details)
Spares
Routine & Full Repair Kits Available – Available in our webshop
* Option of PTFE • Nitrile (31 bar max) • FKM (31 bar max)
Contact UsG4-2042 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases - PDF DatasheetBailey Birkett part of Emerson

G4-2042 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases

CLASS T – Bailey Birkett Bronze Pressure Reducing Valve for Water, Oil, Air & Neutral Gases

Manufactured by Bailey Birkett, the Class T high-capacity pressure reducing valve is designed for use on installations that have a varying inlet pressure and capacity and which require positive shut off under no-load conditions.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP Female
Duty
Air • Neutral Gases • Water • Oil (on request)
Materials
Bronze Body • Rubber Disc, Seals & Diaphragm *
Maximum Upstream Pressure
Up to 27 Bar
Downstream Pressure Range
0.7 to 4.8 Bar (Pressure should not be less than 10% of the inlet pressure.)
Temperature
-18°C to 82°C
* PTFE disc for outlet pressure above 8.2 bar.  NBR disc, seals & diaphragm for oil option
Contact UsCLASS T - Bailey Birkett Pressure Reducing Valve for Water, Oil, Air & Neutral Gases - PDF DatasheetBailey Birkett part of Emerson

CLASS T - Bailey Birkett Pressure Reducing Valve for Water, Oil, Air & Neutral Gases

C10 – Bailey Birkett Bronze Pressure Reducing Valve for Water, Air & Neutral Gases

Manufactured by Bailey Birkett, the C10 balanced pressure reducing valve range is designed for use on water, air and gas applications and for installations which have varying inlet pressures and capacities. It is particularly suitable where a positive shut-off is required under “no flow” conditions and where compact size and economy are essential.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP Female
Duty
Air • Neutral Gases • Water
Materials
Bronze Body • Stainless Steel Seat • EPDM Seals & Disc
Maximum Upstream Pressure
Up to 27 Bar
Downstream Pressure Range
0.7 to 4.8 Bar (Pressure should not be less than 10% of the inlet pressure.)
Temperature
-18°C to 82°C
Contact UsC10 - Bailey Birkett Pressure Reducing Valve for Water, Air & Neutral Gases - PDF DatasheetBailey Birkett part of Emerson

C10 - Bailey Birkett Pressure Reducing Valve for Water, Air & Neutral Gases

JV140020 – Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

The JV140020 is an accurate and reliable direct acting pressure reducing valve used to maintain a pre-set downstream pressure. It is particularly suitable where a positive shut-off is required under “no flow” conditions. The construction materials of this pressure reducing valves make it suitable for seawater as well as many other duties.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 25mm (1″) • BSP Female
Duty
Seawater • Air • Neutral Gases • Water
Materials
Bronze Body & Internal Parts • NBR Diaphragm & Seals (FKM option)
Maximum Upstream Pressure
Up to 30 Bar
Downstream Pressure Range
1 to 10 Bar
Temperature
0°C to 80°C
Compliance & Approvals
3.1 Material Cert (on request)
Contact UsJV140020 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases - PDF Datasheet

JV140020 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

JV140022 – Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

The JV140022 is an accurate and reliable direct acting pressure reducing valve used to maintain a pre-set downstream pressure. It is particularly suitable where a positive shut-off is required under “no flow” conditions. The construction materials of this pressure reducing valves make it suitable for seawater as well as many other duties.

Type
Direct-Acting
Size & Connections
32mm (1 1/4″) to 50mm (2″) • BSP Female
Duty
Seawater • Air • Neutral Gases • Water
Materials
Bronze Body • CR Rubber or NBR Diaphragm • NBR Seals 
Maximum Upstream Pressure
Up to 25 Bar
Downstream Pressure Range
1.5 to 10 Bar (depending on version)
Temperature
0°C to 75°C
Compliance & Approvals
3.1 Material Cert (on request)
Contact UsJV140022 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases - PDF Datasheet

JV140022 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

LRV2 – Spirax Sarco Bronze Pressure Reducing Valve for Liquids

Manufactured by Spirax Sarco, the LRV2S is a direct-acting pressure valve for use on liquids and water. The compact design makes it ideal for point of use installations, providing accurate control of pressure under stable load conditions.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 25mm (1″) • BSP Female (NPT on request)
Duty
Liquids
Materials
Bronze Body • Bronze or Stainless Steel Bellows • Stainless Steel Valve Seat & Piston
Maximum Upstream Pressure
Up to 14 Bar
Downstream Pressure Range
0.35 to 8.6 Bar
Temperature
0°C to 75°C
Contact UsLRV2 - Spirax Sarco Pressure Reducing Valve for Liquids - PDF DatasheetSpirax Sarco

LRV2 - Spirax Sarco Pressure Reducing Valve for Liquids

BRV2 – Spirax Sarco SG Iron Pressure Reducing Valve for Steam, Air & Gases

Manufactured by Spirax Sarco, the BRV2S is a direct-acting pressure valve for use on steam, compressed air and other gases. The compact design makes it ideal for point of use installations, providing accurate control of pressure under stable load conditions.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 25mm (1″) • BSP Female (NPT & Flanged PN25 on request)
Duty
Air • Gases • Steam
Materials
SG Iron Body • Bronze or Stainless Steel Bellows • Stainless Steel Valve Seat
Maximum Upstream Pressure
Up to 19 Bar
Downstream Pressure Range
0.35 to 8.6 Bar
Temperature
0°C to 210°C
Contact UsBRV2 - Spirax Sarco Pressure Reducing Valve for Steam, Air & Gases - PDF DatasheetSpirax Sarco

BRV2 - Spirax Sarco Pressure Reducing Valve for Steam, Air & Gases

481 – WRAS Approved Stainless Steel Pressure Reducing Valve for Water, Air & Neutral Gases

The 481 is a stainless steel pressure reducing valve which is suitable for water up to 95°C, compressed air, neutral gas, neutral and non-sticking liquids.

Type
Direct-Acting
Size & Connections
15mm (1/2″) to 50mm (2″) • BSP Male Unions
Duty
Air • Neutral Gases • Water
Materials
Stainless Body & Internal Parts • EPDM Seals (FKM option)
Maximum Upstream Pressure
Up to 40 Bar (depending on version)
Downstream Pressure Range
0.5 to 15 Bar (depending on version)
Temperature
-10°C to 120°C (depending on version)
Compliance & Approvals
WRAS • ACS • DVGW
Contact Us481 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases - PDF DatasheetWRAS Approved Product

481 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases

484 – Stainless Steel Pressure Reducing Valve for High-Capacity Liquids, Air & Gases

A high-performance and capacity stainless steel pressure reducing valve that is suitable for liquids, air and gases, supplied with a diaphragm as standard or an optional piston version. Pressure adjustment is carried out without tools via the ergonomically formed hand-wheel.

Type
Direct-Acting
Size & Connections
6mm (1/4″) to 50mm (2″) • BSP Female
Duty
Air • Neutral Gases • Water
Materials
Stainless Steel Body & Internal Parts • EPDM Seals (FKM option)
Maximum Upstream Pressure
Up to 60 Bar
Downstream Pressure Range
0.5 to 50 Bar (depending on version)
Temperature
-40°C to 120°C (-10 to 120°C for FKM seals)
Contact Us484 - Pressure Reducing Valve for High-Capacity Liquids, Air & Gases - PDF Datasheet

484 - Pressure Reducing Valve for High-Capacity Liquids, Air & Gases

682 – WRAS Approved Bronze Pressure Reducing Valve for Water, Air & Neutral Gases

The 682 is a flanged pressure reducing valve that is suitable for water up to 95°C, compressed air, neutral gas, neutral and non-sticking liquids.

Type
Direct-Acting
Size & Connections
DN15 to DN100 • PN16 or PN40 Flanged
Duty
Air • Neutral Gases • Water
Materials
Bronze Body • Bronze/Stainless Steel Internal Parts • EPDM Seals (FKM option)
Maximum Upstream Pressure
Up to 40 Bar (depending on version)
Downstream Pressure Range
0.5 to 15 Bar (depending on version)
Temperature
-10°C to 120°C (depending on version)
Compliance & Approvals
WRAS • ACS • DVGW
Contact Us682 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases - PDF DatasheetWRAS Approved Product

682 - WRAS Approved Pressure Reducing Valve for Water, Air & Neutral Gases

482 – WRAS Approved Stainless Steel Pressure Reducing Valve for Water, Air & Neutral Gases

The 482 is a flanged pressure reducing valve that is suitable for water up to 95°C, compressed air, neutral gas, neutral and non-sticking liquids.

Type
Direct-Acting
Size & Connections
DN15 to DN100 • PN16 or PN40 Flanged
Duty
Air • Neutral Gases • Water
Materials
Stainless Steel Body & Internal Parts • EPDM Seals (FKM option)
Maximum Upstream Pressure
Up to 40 Bar (depending on version)
Downstream Pressure Range
0.5 to 15 Bar (depending on version)
Temperature
-10°C to 120°C (depending on version)
Compliance & Approvals
WRAS • ACS • DVGW
Contact Us482 - WRAS Approved Stainless Steel Pressure Reducing Valve for Water, Air & Neutral Gases - PDF DatasheetWRAS Approved Product

482 - WRAS Approved Stainless Steel Pressure Reducing Valve for Water, Air & Neutral Gases

G4-2043 – Bailey Birkett Bronze Pressure Reducing Valve for Steam, Air & Gases

Manufactured by Bailey Birkett, the G4 series of pilot operated pressure reducing valves provide extremely accurate levels of pressure regulation for steam, air and industrial gas applications. The valve relies upon a stable pressure signal from the outlet pipework in order to maintain stable control of the outlet pressure.

Type
Pilot Operated
Size & Connections
DN15 to DN50 • PN40 Flanged (PN16/25, ANSI 150/300 & BST F/H on request)
Duty
Air • Gases • Steam
Materials
Bronze Body • Stainless Steel Trim*
Upstream Pressure Range
0.7 to 35 Bar (dependent on duty)
Downstream Pressure Range
0.07 to 21 Bar
Temperature
-20°C to 260°C (dependent on trim, see datasheet for details)
Spares
Routine & Full Repair Kits Available – Available in our webshop
* Option of PTFE • Nitrile (31 bar max) • FKM (31 bar max)
Contact UsG4-2043 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases - PDF DatasheetBailey Birkett part of Emerson

G4-2043 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases

JV140019 – WRAS Approved Ductile Iron Pressure Reducing Valve for Water

The JV140019 is an accurate and reliable direct acting pressure reducing valve used to maintain a pre-set downstream pressure regardless of flow rate and upstream pressure fluctuations. This valve is manufactured with WRAS listed materials making it particularly suitable for potable water applications.

Type
Direct-Acting
Size & Connections
DN50 to DN150 • PN16 or PN40 Flanged
Duty
Water
Materials
Ductile Iron Body • BStainless Steel Seat • EPDM Seals
Maximum Upstream Pressure
Up to 16 Bar (40 Bar version on request)
Downstream Pressure Range
1.5 to 6 Bar (5 to 24 Bar version on request)
Temperature
-10°C to 70°C (depending on version)
Compliance & Approvals
WRAS Listed Materials
Contact UsJV140019 - WRAS Approved Ductile Iron Pressure Reducing Valve for Water - PDF DatasheetWRAS Approved Materials

JV140019 - WRAS Approved Ductile Iron Pressure Reducing Valve for Water

JV140021 – Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

The JV140021 is an accurate and reliable direct acting pressure reducing valve used to maintain a pre-set downstream pressure. It is particularly suitable where a positive shut-off is required under “no flow” conditions. The construction materials of this pressure reducing valves make it suitable for seawater as well as many other duties.

Type
Direct-Acting
Size & Connections
DN15 to DN25 • PN40 Flanged (PN16, ANSI 150/300 & JIS on request)
Duty
Seawater • Air • Neutral Gases • Water
Materials
Bronze Body & Internal Parts • NBR Diaphragm & Seals (FKM option)
Maximum Upstream Pressure
Up to 30 Bar
Downstream Pressure Range
1 to 10 Bar
Temperature
0°C to 80°C
Compliance & Approvals
3.1 Material Cert (on request)
Contact UsJV140021 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases - PDF Datasheet

JV140021 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

JV140023 – Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

The JV140023 is an accurate and reliable direct acting pressure reducing valve used to maintain a pre-set downstream pressure. It is particularly suitable where a positive shut-off is required under “no flow” conditions. The construction materials of this pressure reducing valves make it suitable for seawater as well as many other duties.

Type
Direct-Acting
Size & Connections
DN32 to DN125 • PN16 Flanged
Duty
Seawater • Air • Neutral Gases • Water
Materials
Bronze Body • NBR Diaphragm & Seals
Maximum Upstream Pressure
Up to 16 Bar
Downstream Pressure Range
1.5 to 10 Bar (depending on version)
Temperature
0°C to 75°C
Compliance & Approvals
3.1 Material Cert (on request)
Contact UsJV140023 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases - PDF Datasheet

JV140021 - Marine Bronze Pressure Reducing Valve for Seawater, Liquids, Air & Neutral Gases

G4-2044 – Bailey Birkett Carbon Steel Pressure Reducing Valve for Steam, Air & Gases

Manufactured by Bailey Birkett, the G4 series of pilot operated pressure reducing valves provide extremely accurate levels of pressure regulation for steam, air and industrial gas applications. The valve relies upon a stable pressure signal from the outlet pipework in order to maintain stable control of the outlet pressure.

Type
Pilot Operated
Size & Connections
DN65 to DN150 • PN16 Flanged (ANSI 150/300 & BST F/H on request)
Duty
Air • Gases • Steam
Materials
Carbon Steel Body • Stainless Steel Trim*
Upstream Pressure Range
0.7 to 16 Bar (dependent on duty)
Downstream Pressure Range
0.07 to 15 Bar
Temperature
-20°C to 220°C (170°C for PTFE trim)
Spares
Routine & Full Repair Kits Available – Available in our webshop
* Option of PTFE
Contact UsG4-2044 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases - PDF DatasheetBailey Birkett part of Emerson

G4-2044 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases

G4-2045 – Bailey Birkett Carbon Steel Pressure Reducing Valve for Steam, Air & Gases

Manufactured by Bailey Birkett, the G4 series of pilot operated pressure reducing valves provide extremely accurate levels of pressure regulation for steam, air and industrial gas applications. The valve relies upon a stable pressure signal from the outlet pipework in order to maintain stable control of the outlet pressure.

Type
Pilot Operated
Size & Connections
DN65 to DN150 • PN16 Flanged (ANSI 150/300 & BST F/H on request)
Duty
Air • Gases • Steam
Materials
Carbon Steel Body • Stainless Steel Trim*
Upstream Pressure Range
0.7 to 35 Bar (dependent on duty)
Downstream Pressure Range
0.07 to 21 Bar
Temperature
-20°C to 260°C (170°C for PTFE trim)
* Option of PTFE
Contact UsG4-2045 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases - PDF DatasheetBailey Birkett part of Emerson

G4-2045 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases

G4-2046 – Bailey Birkett Carbon Steel Pressure Reducing Valve for Steam, Air & Gases

Manufactured by Bailey Birkett, the G4 series of pilot operated pressure reducing valves provide extremely accurate levels of pressure regulation for steam, air and industrial gas applications. The valve relies upon a stable pressure signal from the outlet pipework in order to maintain stable control of the outlet pressure.

Type
Pilot Operated
Size & Connections
DN15 to DN100 • PN40 Flanged (PN16/25, ANSI 150/300 & BST F/H on request)
Duty
Air • Gases • Steam
Materials
Carbon Steel Body • Stainless Steel Trim*
Upstream Pressure Range
0.7 to 42 Bar (dependent on duty)
Downstream Pressure Range
0.07 to 21 Bar
Temperature
-20°C to 400°C (dependent on trim, see datasheet for details)
* Option of PTFE • Nitrile (31 bar max) • FKM (31 bar max)
Contact UsG4-2046 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases - PDF DatasheetBailey Birkett part of Emerson

G4-2046 - Bailey Birkett Pressure Reducing Valve for Steam, Air & Gases