MMO Tubular Anodes – China Supplier Keeper Limited

MMO Tubular Anodes

MMO tubular anode is a high performance anode specifically designed for harsh environments and areas where conventional installations and replacements would be economically prohibitive.

The mixed metal oxide coating is a crystalline electrically conductive coating that activates and enables a titanium substrate to function as an anode. The coating consists of IrO2/Ta2O5 and is suitable for use in soils, carbonaceous backfill, fresh and brackish water, seawater and concrete.

Whether operating in fresh water, seawater, soil or mud MMO coatings are extremely stable even in very low pH environments.

Key Features About MMO Tubular Anode

STANDARD ANODE SIZES

MMO anodes are available in two standard sizes - however other sizes are available on request:

Diameter(mm)	Length(mm)	Surface Area(mm²)	Assembled Weight(kg)
25	1000	0.079	1.1
25	500	0.039	0.56

CURRENT OUTPUT OF STANDARD ANODES

Environment	Maximum Current Density(A/m2)	Lifetime
		(year)*
Carbonaceous Backfill	50	20
Calcined Petroleum Backfill	100	20
Fresh Water	100	20
Brackish Water	100~300	20
Sea Water	600	20

*Lifetime depends on running at full output for the length of time. So in carbonaceous backfillthe maximum current density is 50 A/m² which will give 20 years If the anodes are operated at 25 A/m² then the lifetime will increase to 40 years.

CURRENT OUTPUT

Environment	Current Output of	Lifetime
	1000mm Anode（A）	(year)*
Carbonaceous Backfill	50	20
Calcined Petroleum Backfill	100	20
Fresh Water	100	20
Brackish Water	100~300	20
Sea Water	600	20

LIFETIME BASED ON TEMPERATURE RANGE

Environment	Temperature Range（℃）	Lifetime
		(year)
Soil/Coke Breeze/Fresh Water	5~50	20
Seawater	10~50	15
Mud/Brackish Water	5~50	20

CENTRE CABLE CRIMP CONNECTION

KEEPER has developed an extremely strong and electrically low resistance centre crimp connection, which ensures the lowest possible electrical resistance between the cable and anode substrate. In strength tests the cable will always break first without any effect on the crimp connection.

COMPONENTS

All MMO anodes use PVDF sealing bungs and sleeving to ensure maximum protection in the most hostile of environments. As a further safe guard the centre connection is sealed with an extremely high performance 2 pack epoxy resin.

STANDARDS, TESTING AND INSPECTION

Titanium tubes to ASTM B336. MMO anodes have a substrate with Ti to ASTM grade 1 or 2. Anode centre connection to cable resistance tests completed for each anode string. Each anode assembly if rigorously tested and inspected from design to packaging. All phases of material selection, MMO coating, testing and assembly are scrutinized under BAC ISO 9001 procedures.