Manhole Cover YOJE Series
Product Description
YOJE series manhole cover European standard system
| Serial number | unit | unit price |
| manhole (flanged)-RKG-AL-560 20inch | unit | $210~580USD |
| manhole (flanged)-RKG-AL-580 20inch | unit | $230~580USD |
| manhole(clamp)- RKG 20inch | unit | $192~380USD |
YOJE RKG series manhole cover is installed on the top of oil tanker and used for loading oil ,checking gas recovery,mending the internal inlet.
Also can protect the tanker under the emergency. When loading oil,the outside temperature’s change will lead the tanker’s inside pressure to change. Then the manhole cover’s breathing valve can automatically make the tanker pressure to the normal level. If some emergency happen , like the tanker overturn,the breathing valve will automatically close to avoid the tanker’s explosion when under the fire condition..
Feature:
All types manhole cover has the breathing valve
Breathing valve's different pressure set can fit different operation requirement
Breathing valve has the automatically seal's function,can avoid leakage under emergency
Fit EN13317:2002 standard
Technical Data Sheet
Material:
Body: SS
Handle: SS
Safety locker: SS
Seal: PTFE
Parameter:
| Size | 20" |
| Working pressure | 0.3MPA |
| Install way | Welding |
| Material | SS 304/316 |
| Medium | oil |
| Temperature | -50 to 200 ℃ |
RKG-6306
Material:
Body: Steel
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
| Size | 20" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Clamped |
| Temperature | -20 to 70 ℃ |
RKG-6308
Material:
Body: Steel
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
| Size | 16" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Clamped |
| Temperature | -20 to 70 ℃ |
RKG-6306C
Material:
Body: steel
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
| Size | 20" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Clamped |
| Temperature | -20 to 70 ℃ |
RKG-6308C
Material:
Body: Steel
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
| Size | 16" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Clamped |
| Temperature | -20 to 70 ℃ |
RKG-580E
Material:
Body: Casting AL alloy
Breathing valve: AL alloy
Handle: steel
Safety locker: Brass
Seal: NBR
| Size | 20" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Flange |
| Temperature | -20 to 70 ℃ |
RKG-560E
Material:
Body: Casting AL alloy
Breathing valve: AL alloy
Handle: steel
Safety locker: Brass
Seal: NBR
| Size | 20" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Flange |
| Temperature | -20 to 70 ℃ |
RKG-460E
Material:
Body: Casting AL alloy
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
| Size | 16" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Flange |
| Temperature | -20 to 70 ℃ |
RKG-AL-560
Material:
Body: Casting AL alloy
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
| Size | 20" |
| Breathing valve | 10" |
| Pressure resistance | 0.254MPA |
| Open pressure | 21KPA-32KPA |
| Max air flow rate | 7000m⊃3; /H |
| Connect way | Flange |
| Temperature | -20 to 70 ℃ |
RKG-AL-460
Material:
Body: Casting AL alloy
Breathing valve: AL alloy
Handle: steel
Safety locker: SS
Seal: NBR
RKG-S-560
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