T6 Triple Vane Pumps: T6DCC and T6EDC, Three Sections in One Code

The T6 triples carry three sections on one shaft, so one string names three cartridge sizes plus the shaft, the port arrangement and the seals. Two standard builds exist: T6DCC and T6EDC. Both are written in the same field order, and the difference between them is the size of the front section and the way the two rear sections are written.

The ordering work is the same on either model: read the three cartridge codes against the group listed for each position, then settle shaft, rotation, port form and seal class.

Two models, three positions

Model	Sections	Front position P1	Middle position P2	Rear position P3	Shaft codes
T6DCC	D + C + C	D group, eleven codes	C group, shared with P3	C group, shared with P2	1 to 4
T6EDC	E + D + C	E group, seven codes	D group, eleven codes	C group, thirteen codes	1 only

The string, field by field

The T6DCC example reads T6DCC - B38 - B28 - B08 - 1 R 00 - A 1 - 00 - .. and the T6EDC example reads T6EDC - 062 - 035 - 017 - 1 R 00 - A 1 - P 0 - ... The T6EDC adds one field, for the pedestal mounting option, in front of the port form.

Field	Function	T6DCC	T6EDC
1	Series	T6DCC	T6EDC
2	Front cartridge P1	from the D group	from the E group
3	Middle cartridge P2	from the C group	from the D group, leading zero
4	Rear cartridge P3	from the C group, same group as P2	from the C group, leading zero
5	Shaft	1 to 4	1
6	Rotation, seen from the shaft end	R or L	R or L
7	Porting combination	00 standard	00 standard
8	Design letter	A	A
9	Seal class	1, 4 or 5	1, 4 or 5
10	Mounting option, T6EDC only	not present	P pedestal
11	Port form	00, 01, M0 or M1	0 or 1
12	Modification	..	..

The two groups behind the T6DCC

Displacements are in ml/rev. The front position reads the eleven-code D group, and the two rear positions share one thirteen-code C group, so P2 and P3 are chosen from the same table.

D code, P1	ml/rev	C code, P2 and P3	ml/rev
B14	47.6	B03	10.8
B17	58.2	B05	17.2
B20	66.0	B06	21.3
B24	79.5	B08	26.4
B28	89.7	B10	34.1
B31	98.3	B12	37.1
B35	111.0	B14	46.0
B38	120.3	B17	58.3
B42	136.0	B20	63.8
B45	145.7	B22	70.3
B50	158.0	B25	79.3
		B28	88.8
		B31	100.0

The T6EDC groups, and the leading zero

The E triple reads three different groups, and the two rear positions write their codes with a leading zero: 014 stands for 47.6 ml/rev and 003 for 10.8 ml/rev, the same displacements that the T6DCC writes as B14 and B03. The codes are not interchangeable between the two models, even where the displacement is the same.

E code, P1	ml/rev	D code, P2	ml/rev	C code, P3	ml/rev
042	132.3	014	47.6	003	10.8
045	142.4	017	58.2	005	17.2
050	158.5	020	66.0	006	21.3
052	164.8	024	79.5	008	26.4
062	196.7	028	89.7	010	34.1
066	213.3	031	98.3	012	37.1
072	227.1	035	111.0	014	46.0
		038	120.3	017	58.3
		042	136.0	020	63.8
		045	145.7	022	70.3
		050	158.0	025	79.3
				028	88.8
				031	100.0

Shaft codes

The T6DCC offers four shafts: 1 keyed outside SAE, 2 keyed to SAE CC, 3 splined to SAE C and 4 splined to SAE CC. The T6EDC is built with one shaft only: code 1, keyed to G45N under ISO 3019-2. A shaft code from one model means nothing on the other.

Rotation and the porting combination

Rotation is given as seen from the shaft end, R clockwise and L counter-clockwise. The porting combination sets how the three port sets sit relative to each other and to the mounting face, and 00 is the standard arrangement.

Design letter and seal classes

The design letter is A on both models. Three seal classes are offered: 1, S1 in BUNA N, for mineral oil; 4, S4 in EPDM, for fire-resistant fluids; and 5, S5 in VITON, for mineral oil and fire-resistant fluids.

The pedestal option on the T6EDC

The extra field on the E triple records the mounting option. P is a pedestal mounting, which carries the pump on a foot rather than on the flange alone. The T6DCC has no such field.

Port forms

On the T6DCC the port sizes are fixed except for the rear section: suction is 4 in, the front pressure port is 1.1/4 in and the middle port 1 in, while the rear port is either 1 in or 3/4 in. The code names the thread and that rear size: 00 and M0 for the 1 in port, 01 and M1 for the 3/4 in port, with the letter M marking metric threads.

On the T6EDC the port form field carries a single character and names the rear port size only: 0 for a 1 in SAE port and 1 for 3/4 in.

Mounting torques

Model	Mounting torques
T6DCC	68 Nm, 187 Nm and 187 Nm
T6EDC	300 Nm, 190 Nm and 90 Nm

What to confirm before ordering

• All three cartridge codes. On the T6DCC the two rear positions share one group; on the T6EDC they do not, and both use the leading-zero form.
• The shaft. Four codes on the T6DCC, one on the T6EDC.
• The rear port size, which is the only port dimension the code changes.
• Whether a pedestal is needed, which only the T6EDC field can express.

Ordering

Send the complete string from the nameplate, with all three cartridge codes in order. Where the plate is worn, photographs of the mounting face and of the shaft end identify the build before anything is shipped.

The T6 triple pump range shows what we list, the cartridge kits and the T-series overview cover the rest of the family, and specific strings can go through the contact page.

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