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Cartridge Valves
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Successor
DREADNOUGHT CLASS - SSBN (4 Planned)

Class Type: Nuclear-Powered Ballistic Missile Submarine (SSBN)
Displacement: 17,200 t (16,900 long tons; 19,000 short tons)
Length: 153.6 meters (504ft)
Propulsion: PWR3 nuclear reactor, turbo electric drive, pump-jet
MOD Planned: 4 SSBN's
Submarine Under Construction: 1
VANGUARD CLASS - SSBN (Active: 4)

Class Type: Ship Submersible Ballistic Nuclear (SSBN)
Displacement: 15,680 tons dived
Length: 149.9m (491 ft 10 in)
Propulsion: Rolls-Royce PWR2 nuclear reactor
Vanguard Class four boats: Vanguard (S28), Victorious (S29), Vigilant (S30), and Vengeance (S31)


AIR
AVBS -
Aux Vent & Blow System
BIB -
Built in Breathing System & Hood Inflation System
DDS -
Diesel Air Start System
EBA -
Emergency Air Breathing System
FAS -
Firing Air Systems
HPA -
High Pressure Air System
HPB -
High Pressure Blow System
MLO -
Main Lub Oil System
WHA -
Weapons Handling System
DQA -
Divers Quality Breathing Air System
CDR -
Carbon Dioxide Removal System
LPE -
Electrolyser System
GM -
Gas Mgmt Plant System
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NITROGEN
HPDHR System N -
Nitrogen System
PC -
Primary Circuit
OPG -
Valve OP & Gas System
WM -
Water Mist System
E -
Emergency Core Cooling System
FT -
Feed Transfer System
H&C -
Hot & Cold Domestic System
PCD -
Primary Coolant Discharge System
PCM -
Primary Coolant Make-up System
PCS -
Primary Coolant Sampling System
PSW -
Primary Shield Water System
RCFW -
RCFW Cooling System
EBS -
Emergency Blow System
TBCW -
Thermostatic Bypass Chilled Water
SH -
Sewerage
|
OIL
EHP -
External Hydraulic Power Plant
EHS -
External Hydraulics Systems
HTS -
Hydraulic Oil Fill & Transfer System
HDS -
Hydroplane & Steering Control System
HHP -
Hydroplane & Steering Gear Hydraulic Power Plant
MHP -
Main Hydraulic Power Plant
HS -
Main Hydraulic System
SP -
Secondary Propulsion System
WH -
Weapons Handling System
HFI -
Hydraulic Fire Isolation
GL -
Gland Steam
PS -
Primary Steam
SS -
Secondary Steam
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Astute Class SSN - Cartridge Valves installed on all the following systems
QTY. |
QTY. |
QTY. |
AIR
AVBS =
Aux Vent & Blow System
42
BIB =
Built in Breathing System & Hood Inflation System
24
DDS =
Diesel Air Start System
38
EBA =
Emergency Air Breathing System
41
FAS =
Firing Air Systems
93
HPA =
High Pressure Air System
166
HPB =
High Pressure Blow System
44
MLO =
Main Lube Oil System
43
WHA =
Weapons Handling System
48
DQA =
Divers Quality Breathing Air System
9
CDR =
Carbon Dioxide Removal System
13
|
NITROGEN
HPDHR =
hpdhR System
8
N =
Nitrogen System
131
PC =
Primary Circuit
75
OPG =
Valve OP & Gas System
42
WM
Water Mist System
13
E =
Emergency Core Cooling System
12
FT =
Feed Transfer System
37
H&C =
Hot & Cold Domestic System
29
PCD =
Primary Coolant Discharge System
59
PCM =
Primary Coolant Make-up System
77
PCS =
Primary Coolant Sampling System
43
|
PSW =
Primary Shield Water System
31
RCFW =
RCFW Cooling System
24
EHP
External Hydraulic Power Plant
69
EHS
External Hydraulics Systems
87
HTS
Hydraulic Oil Fill & Transfer System
86
HDS
Hydroplane & Steering Control System
48
HHP
Hydroplane & Steering Gear Hydraulic Power Plant
45
MHP
Main Hydraulic Power Plant
113
HS
Main Hydraulic System
195
SP
Secondary Propulsion System
5
WH
Weapons Handling System
52
HFI
Hydraulic Fire Isolation
5
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Countries: Installed Base |
TOTAL SUBMARINES SHIPS/PLATFORMS |
VALVES PER SUBMARINE SHIPS/PLATFORM |
TOTAL DELIVERED VALVES |
Details/Notes | |
![]() |
![]() SWIFTSURE- SSN |
5 | 980 | 4,900 | 1st Commissioned: 1973 |
![]() TRAFALGAR- SSN |
2 | 1,750 | 3,500 | 1st Commissioned: 1985 | |
5 | 1,750 | 8,750 | 5 Decommissioned | ||
![]() VANGUARD- SSBN |
4 | 2,067 | 8,268 | 1st Commissioned: 1993 | |
![]() ASTUTE- SSN |
7 | 1,860 | 13,020 | 1st Commissioned: 2010 5 Boats Confirmed |
|
![]() |
![]() SEAWOLF- SSN |
3 | 4 | 12 | 1st Commissioned: 1997 |
![]() VIRGINIA- SSN |
18 | 4 | 72 | 1st Commissioned: 2004 18 Boats Confirmed | |
![]() |
![]() VICTORIA- SSN |
4 | 1,260 | 5,040 | formerly Upholder (UK):1st Commissioned: 1986 Victoria (Canada) Commissioned: 2000 |
![]() |
![]() S-80 CLASS- SS |
4 | 580 | 580 *one ship | *1stst to be Commissioned 2013 |

Countries: Installed Base |
TOTAL SUBMARINES SHIPS/PLATFORMS |
VALVES PER SUBMARINE SHIPS/PLATFORM |
TOTAL DELIVERED VALVES |
Details/Notes | |
![]() |
![]() BARRACUDA- SSN |
6 | 2 | 8 | Range of regulators Delivered 4 boats so far. |
![]() SCORPENE CLASS -SSK |
14 | 2 | 14 | Range of regulators Delivered 4 boats so far. | |
![]() |
![]() COLUMBIA CLASS -SSBN |
In Process | In Process | In Construction | |
![]() |
![]() M-CLASS FRIGATES |
7 | 925 | 6,475 | 1st Commissioned : 1991 |
![]() |
![]() OFFSHORE PATROL VESSEL |
8 | 95 | 760 | 1st Commissioned : 2009 |
![]() |
![]() PROJECT 17 |
3 | 486 | 1,458 | 1st Commissioned : 2010 |
![]() VIKRANT CLASS |
1 | 360 | 1st to be Commissioned: Expected in 2022 current valves order being manufactured 2020. |

Countries: Installed Base |
TOTAL SUBMARINES SHIPS/PLATFORMS |
VALVES PER SUBMARINE SHIPS/PLATFORM |
TOTAL DELIVERED VALVES |
Details/Notes | |
![]() |
![]() Manifolds and cartridge valves |
1 | 1,842 | ||
![]() |
![]() AIRCRAFT CARRIER |
CVN-78 1 | 550 | 550 | 1st to be Commissioned: Expected after Nov 2016 |
CVN-79 1 | 550 | 550 | |||
CVN-80 1 | 550 | 50 | |||
CVN-81 1 | 550 | 0 | |||
![]() |
.LNG Gas Supply System for ME-GI gas-injection system Manifold ![]() |
85 | 30 | 2,550 | |

No. of Submarines/Ships Rocket Launch /LNG |
Total No. of Valves | ||||
Submarines: SSN's, SSBN's, SSK's | ![]() |
*58 | 44,150 | ||
Aircraft Carriers: CVN's, CV's | ![]() |
5 | 1,510 | ||
Naval Surface Ships: | ![]() |
18 | 8,693 | ||
Rocket Launch Pad: | ![]() |
1 | 1,842 | ||
LNG Gas Supply System for ME-GI gas-injection system Manifold | |||||
LNG Carriers | ![]() |
85 | 2,550 | ||
LNG Container Ships | ![]() |
||||
TOTAL | 167 | 58,745 |

Advantages
Reduce Construction & Life-cycle Costs
- Body is integral part of platform for lifetime.
- Cartridge can be replaced, in-line, within minutes.
- Valve seat is part of removable cartridge.
- Thirteen different cartridges (interchangeable) within each valve body size.
- Reduction in spares/inventory.. not necessary to inventory valve body's...
- End connections-butt weld/socket weld/screwed.
- Cartridge valves = weight reduction.
- Cartridge valves = reduced space envelope savings
- Installed Base = 75,344 cartridge valves
Valve Body Sizes: | A2: | B3: | C4: | D5: | E6: | G7: | H8: | J9: |
1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 21/2" | 3" | |
Design Pressure: | 70 bar /1000 psi thru 400 bar/6000 psi | |||||||
Total Valve Sizes: | 8 | |||||||
Different Cartridges: | 13 |
