Spring Loaded Check (Non-Return) Valves
Johnson Valves offer spring loaded check valves and spring assisted check valves. Our range includes in-line, disc, duel plate, double and swing type for a wide variety of duties and applications.
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
T480Y – Bronze Nibco Spring-Loaded Check (Non-Return) Valve
Good quality spring loaded check (non-return) valve suitable for HVAC, steam and general purpose applications that can be installed in any orientation.
Type
Spring Loaded (In-Line)
Size & Connections
10mm (3/8″) to 50mm (2″) BSPT Female
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Bronze Body • PTFE Disc
Pressure Rating
17.2 Bar (dependent on temperature)
Temperature
-10°C to 178°C
JV080007 – DZR Brass WRAS Approved Spring-Loaded Check (Non-Return) Valve
A WRAS approved economical spring-loaded non-return valve with a DZR brass body and EPDM seals.
Type
Spring Loaded (In-Line)
Size & Connections
15mm (1/2″) to 50mm (2″) BSPP Female
Duty
Water
Materials
DZR Brass Body • POV Cartridge • EPDM Seals
Pressure Rating
PN16
Temperature
0°C to 85°C
Compliance & Approvals
WRAS (38 Series)
JV080049 – Brass Spring-Loaded Check (Non-Return) Valve – Viton Seals
An economical spring-loaded non-return valve with a brass body and Viton 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 • Brass Disc • Viton Seals
Pressure Rating
6-25mm PN35 • 32-50mm PN25 • 65-100mm PN12
Temperature
-10°C to 110°C
JV080008 – DZR Brass WRAS Approved Double Check (Non-Return) Valve
A WRAS approved economical spring-loaded non-return valve with a DZR brass body and EPDM seals.
Type
Spring Loaded (In-Line) • Double Check
Size & Connections
15mm (1/2″) to 50mm (2″) BSPP Female
Duty
Water
Materials
DZR Brass Body • Acetal Cartridge • EPDM Seals
Pressure Rating
PN16
Temperature
0°C to 85°C
Compliance & Approvals
WRAS (Floguard range)
JV080058 – Stainless Steel High Pressure Spring-Loaded Check (Non-Return) Valve – Buna-N Seals
A high pressure spring-loaded non-return valve with a stainless steel body and Buna-N seals. The valve requires a minimum pressure of 0.33 PSI to open and can be installed in both horizontal and vertical lines with upward flow or in any intermediate position.
Type
Spring Loaded (In-Line)
Size & Connections
6mm (1/4″) to 25mm (1″) BSPP, BSPT or NPT Female
Duty
Air • Inert Gas • Oil • Water
Materials
Stainless Steel Body, Spring & Poppet• Buna-N Seals
Pressure Rating
400 Bar
Temperature
-34°C to 135°C
JV081001 – Stainless Steel Spring-Loaded Check (Non-Return) Valve
A good quality spring loaded check (non-return) valve with a stainless steel body and PTFE seals.
Type
Spring Loaded (In-Line)
Size & Connections
6mm (1/4″) to 100mm (4″) BSPP Female
Duty
Air • Inert Gas • Oil • Water
Materials
Stainless Steel Body & Disc • PTFE Seals
Pressure Rating
6-25mm PN82 • 32-40mm PN69 • 50-100mm PN62
Temperature
-25°C to 200°C (dependent on pressure)
JV081005 – Stainless Steel 3-Piece Spring Loaded Check (Non-Return) Valve
A robust stainless steel spring loaded 3-piece check (non-return) valve. Suitable for use in chemical and pharmaceutical industries, petrochemical industries, hydraulic installation, compressed air, steam and water systems.
Type
Spring Loaded (In-Line) • 3-Piece
Size & Connections
6mm (1/4″) to 100mm (4″) BSP Female
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body & Disc • PTFE Seals
Pressure Rating
PN63
Temperature
-20°C to 200°C (dependent on pressure)
Compliance & Approvals
ATEX II 2 GD c T2 Non-electrical Valves • 3.1 Material Certification (available on request)
JV080013 – Stainless Steel Wafer Spring Assisted Swing Check (Non-Return) Valve – NBR Seal
Stainless steel wafer swing type check valve with spring assisted closing, suitable for a wide range of applications particularly oil.
Type
Swing (Flap) • Spring Assisted
Size & Connections
DN32 to DN250 • Wafer – Between BS4504 PN6/10/16/25 & ANSI 150 Flanges
Duty
Air • Inert Gas • Oil • Water
Materials
Stainless Steel Body, Flap & Spring • Viton Seals
Pressure Rating
32-200mm PN25 • 250mm PN16
Temperature
-10°C to 100°C (dependent on pressure)
JV080014 – Stainless Steel Wafer Spring Assisted Swing Check (Non-Return) Valve – Viton Seal
Stainless steel wafer swing type check valve with spring assisted closing, suitable for various applications.
Type
Swing (Flap) • Spring Assisted
Size & Connections
DN32 to DN250 • Wafer – Between BS4504 PN6/10/16/25 & ANSI 150 Flanges
Duty
Air • Inert Gas • Oil • Water
Materials
Stainless Steel Body, Flap & Spring • Viton Seals
Pressure Rating
32-200mm PN25 • 250mm PN16
Temperature
-10°C to 150°C (dependent on pressure)
JV080015 – Stainless Steel Wafer Spring Assisted Swing Check (Non-Return) Valve – PTFE Seal
Stainless steel wafer swing type check valve with spring assisted closing, suitable for high-temperature applications.
Type
Swing (Flap) • Spring Assisted
Size & Connections
DN32 to DN250 • Wafer – Between BS4504 PN6/10/16/25 & ANSI 150 Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Flap & Spring • PTFE Seals
Pressure Rating
32-200mm PN25 • 250mm PN16
Temperature
-10°C to 200°C (dependent on pressure)
JV080017 – Ali-Bronze Marine Wafer Spring Assisted Swing Check (Non-Return) Valve – Length A
A marine quality aluminium bronze swing type check (non-return) valve generally used to prevent backflow in water and seawater systems.
Type
Swing (Flap) • Spring Assisted
Size & Connections
DN32 to DN500 • Wafer – Between BS4504 PN10/16 Flanges
Duty
Air • Inert Gas • Oil • Seawater • Water
Materials
Aluminium Bronze Body & Flap • Stainless Steel Spring • NBR Seals
Pressure Rating
32-150mm PN16 • 200-500mm PN10
Temperature
-10°C to 100°C
JV080019 – Ali-Bronze Marine Wafer Spring Assisted Swing Check (Non-Return) Valve – Length B
A marine quality aluminium bronze swing type check (non-return) valve with spring assisted closing, generally used to prevent backflow in water and seawater systems.
Type
Swing (Flap) • Spring Assisted
Size & Connections
DN40 to DN500 • Wafer – Between BS4504 PN10/16 Flanges
Duty
Air • Inert Gas • Oil • Seawater • Water
Materials
Aluminium Bronze Body & Flap • Stainless Steel Spring • NBR Seals
Pressure Rating
40-200mm PN16 • 250-300mm PN10/16 • 350-500mm PN10
Temperature
-40°C to 100°C
JV080020 – Brass Wafer Spring Assisted Disc Check (Non-Return) Valve – Metal Seat
An economical spring-loaded non-return valve with a brass body and a stainless steel disc.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504 PN16/25/40 Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Brass Body • Stainless Steel Disc & Spring
Pressure Rating
PN52
Temperature
-10°C to 300°C (dependent on pressure)
JV080021 – Stainless Steel Wafer Spring Assisted Disc Check (Non-Return) Valve – Metal Seat
An economical spring-loaded non-return valve with a stainless steel body and disc with a metal seat.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504 PN10/16/25/40. ANS1 150 & 300 Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Disc & Spring • Metal Seat
Pressure Rating
PN40
Temperature
0°C to 200°C (dependent on pressure)
JV080022 – Stainless Steel Wafer Spring Assisted Disc Check (Non-Return) Valve – EPDM Seat
An economical spring-loaded non-return valve with a stainless steel body and disc with an EPDM seat suitable for water applications.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504 PN10/16/25/40 ANS1 150 & 300 Flanges
Duty
Water
Materials
Stainless Steel Body, Disc & Spring • EPDM Seat
Pressure Rating
PN52
Temperature
0°C to 130°C (dependent on pressure)
JV080023 – Stainless Steel Wafer Spring Assisted Disc Check (Non-Return) Valve – NBR Seat
An economical spring-loaded non-return valve with a stainless steel body and disc with an NBR seat suitable for air & oil applications.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504 PN10/16/25/40. ANS1 150 & 300 Flanges
Duty
Air • Oil
Materials
Stainless Steel Body, Disc & Spring • NBR Seat
Pressure Rating
PN52
Temperature
0°C to 95°C (dependent on pressure)
JV080024 – Stainless Steel Wafer Spring Assisted Disc Check (Non-Return) Valve – Viton Seat
An economical spring-loaded non-return valve with a stainless steel body and disc with a Viton seat suitable for a wide range of applications.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504 PN10/16/25/40. ANS1 150 & 300 Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Disc & Spring • Viton Seat
Pressure Rating
PN52
Temperature
0°C to 200°C (dependent on pressure)
JV080025 – Stainless Steel Wafer Spring Assisted Disc Check (Non-Return) Valve – PTFE Seat
An economical spring-loaded non-return valve with a stainless steel body and disc with a Viton seat suitable for a wide range of applications.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504 PN10/16/25/40. ANS1 150 & 300 Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Disc & Spring • Viton Seat
Pressure Rating
PN52
Temperature
0°C to 200°C (dependent on pressure)
DCV3 (Supersedes DCV2) – Spirax Sarco Stainless Steel Wafer Disc Check (Non-Return) Valve
A high-quality (non-return) valve is suitable for use on a wide range of fluids for applications in process lines, hot water systems, steam and condensate systems etc. This valve can be supplied without spring for lower temperature duties down to -60°C.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504, ANSI, BST & JIS Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Disc & Spring • Metal Seat (Viton & EPDM Option)
Pressure Rating
PN40
Temperature
-60°C to 400°C (dependent on pressure & version)
Compliance & Approvals
EN 558 part 1, series 49
RK44 – Gestra Bronze Wafer Spring Assisted Disc Check (Non-Return) Valve – Metal Seat
A high-quality (non-return) valve is suitable for use on a wide range of fluids for applications in process lines, hot water systems, steam and condensate systems etc.
Type
Disc • Spring Assisted
Size & Connections
DN15 to DN100 • Wafer – Between BS4504, ANSI, BST & JIS Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Disc & Spring • Metal Seat
Pressure Rating
PN16
Temperature
-200°C to 230°C (dependent on pressure)
Compliance & Approvals
EN 558 part 1, table 11, series 49
JV081003 – Stainless Steel Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – Metal Seat
Dual plated, spring-loaded non-return valve suitable for a wide range of applications.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN300 • Wafer – Between BS4504 PN10/16, ANSI 150 & BST D/E Flanges
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Plates & Spring • Metal Seat
Pressure Rating
PN16
Temperature
-29°C to 150°C (dependent on pressure)
JV081004 – Stainless Steel Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – Viton Seat
Dual plated, spring-loaded non-return valve with a length to DIN 3202-K3 / ISO 5752 long.
Type
Dual Plate • Spring Assisted
Size & Connections
DN40 to DN300 • Wafer – Between BS4504 PN10/16/25 Flanges
Duty
Air • Inert Gas • Oil • Water
Materials
Stainless Steel Body, Plates & Spring • Viton Seat
Pressure Rating
PN10
Temperature
-10°C to 150°C (dependent on pressure)
Compliance & Approvals
DIN 3202-K3 / ISO 5752 long
JV080031 – Stainless Steel Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – Viton Seat
Dual plated, spring-loaded non-return valve with a length to EN 558 part 1.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN200 • Wafer – Between BS4504 PN10/16/25 & ANSI 150 Flanges*
Duty
Air • Inert Gas • Oil • Steam • Water
Materials
Stainless Steel Body, Plates & Spring • Viton Seat
Pressure Rating
PN25
Temperature
-20°C to 180°C (dependent on pressure)
Compliance & Approvals
EN 558 part 1
* DN100 to DN200 PN25 & ANSI 150 only
JV081007 – Ductile Iron Marine Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – NBR Seat
A marine duty ductile iron, spring-loaded dual plate check valve with aluminium bronze flaps and NBR seats suitable for cold and hot water, seawater, fuel oil and other non-aggressive media.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN600 • Wafer – Between BS4504 PN10/16 Flanges
Duty
Air • Inert Gas • Oil • Seawater • Water
Materials
Ductile Iron Body • Stainless Steel Spring • Ali-Bronze Plates • NBR Seat
Pressure Rating
50-200mm PN16 • 250-600mm PN10 (250-300mm PN16 on request)
Temperature
-40°C to 100°C
JV081016 – Cast Iron Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – Length A
Epoxy coated cast iron, spring-loaded dual plate check valve with stainless steel flaps and EPDM seats suitable for water applications.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN300 • Wafer – Between BS4504 PN10/16 & ANSI 150 Flanges
Duty
Water
Materials
Cast Iron Body • Stainless Steel Plates & Spring • EPDM Seat
Pressure Rating
PN16
Temperature
-10°C to 110°C
Compliance & Approvals
JV081002 – Cast Iron Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – Length B
A WRAS approved epoxy coated cast iron, spring-loaded dual plate check valve with stainless steel flaps and EPDM seats suitable for water applications.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN600 • Wafer – Between BS4504 PN10/16 Flanges
Duty
Water
Materials
Cast Iron Body • Stainless Steel Plates & Spring • EPDM Seat
Pressure Rating
PN16
Temperature
-10°C to 120°C
Compliance & Approvals
WRAS (Series 5106W & 5306W)
JV080032 – Ali-Bronze Marine Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – NBR Seat
A marine duty aluminium bronze, spring-loaded dual plate check valve an NBR seat suitable for cold and hot water, seawater, fuel oil and other non-aggressive media.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN600 • Wafer – Between BS4504 PN10/16 Flanges
Duty
Air • Inert Gas • Oil • Seawater • Water
Materials
Aluminium Bronze Body & Plates • Stainless Steel Spring • NBR Seat
Pressure Rating
50-300mm PN16 • 350-600mm PN10
Temperature
-40°C to 100°C
JV081008 – Ali-Bronze Marine Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – NBR Seat
A marine duty aluminium bronze, spring-loaded dual plate check valve an NBR seat suitable for fitting between PN6 flanges as well as PN10/16 & ANSI 150.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN600 • Wafer – Between BS4504 PN6/10/16 & ANSI 150 Flanges
Duty
Air • Inert Gas • Oil • Seawater • Water
Materials
Aluminium Bronze Body & Plates • Stainless Steel Spring • NBR Seat
Pressure Rating
PN16
Temperature
-10°C to 90°C
JV081017 – Ductile Iron Spring Assisted Axial Disc Check (Non-Return) Valve
A WRAS approved epoxy coated cast iron, spring-loaded axial disc check valve with EPDM seats suitable for water applications offering good tightness at low differential pressures and can help to prevent water hammer.
Type
Axial Disc • Spring Assisted
Size & Connections
DN50 to DN300 • PN16 Flange
Duty
Water
Materials
Cast Iron Body • Stainless Steel Disc & Seat • EPDM Disc Ring
Pressure Rating
PN16
Temperature
-10°C to 120°C
Compliance & Approvals
WRAS (Series 5106 & 5306)
JV081013 – WRAS Approved Ductile Iron Double Check (Non-Return) Valve
A WRAS approved epoxy coated ductile iron, spring-loaded double check valve with PN16 flange connections suitable for water applications. This valve can be installed in both horizontal and vertical lines with upward flow or in any intermediate position.
Type
Double Disc • Spring Assisted
Size & Connections
DN50 to DN300 • PN16 Flange
Duty
Water
Materials
Ductile Iron Body • Stainless Steel Spring • EPDM Disc Trim
Pressure Rating
PN16
Temperature
-10°C to 85°C
Compliance & Approvals
DN40-200 WRAS Approved (237) • DN250-300 WRAS Materials
JV081015 – Ductile Iron ANSI Wafer Spring Assisted Dual Plate Check (Non-Return) Valve – NBR Seat
The JV081015 is an ANSI 150 ductile iron, spring loaded dual plate check valve with stainless steel flaps and NBR seats suitable for various applications.
Type
Dual Plate • Spring Assisted
Size & Connections
DN50 to DN600 • Wafer – Between ANSI 150 Flanges
Duty
Air • Inert Gas • Oil • Seawater • Water
Materials
Ductile Iron Body • Stainless Steel Spring & Plates • NBR Seat
Pressure Rating
Class 150
Temperature
0°C to 100°C
