Dual Plate Check (Non-Return) Valves
Johnson Valves offer a range of wafer dual plate check valves which are widely used in the water and marine industries.
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)
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
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
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
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
