KTM 512 – NPT threads/ANSI flanges

Pressure independent balancing and control valve – DN 15-125

High-performing and compact, these pressure-independent control valves for variable flow heating and cooling systems are particularly effective in situations requiring high temperatures and/or pressure drops. They are also suitable for use on the secondary side in district heating and comfort cooling systems. Rust protection is assured due to the electrophoretically painted ductile iron body, while the plug delivers valve characteristic, suitable for modulating control.

Features & Benefits

Inline design

Inline flow allows high pressure drops without noise.

Adjustable flow

Ensures the design flow.

Adapters

For use with most available actuators.

Technical Information

Technical description

Application:

Heating and cooling systems.

Functions:

Control EQM
Pre-setting (max. flow)
Differential pressure control
Measuring (ΔH, t, q)
Isolation (for use during system maintenance)

Dimensions:

DN 15-125

Pressure class:

DN 15-50: PN 25
DN 65-125: Class 150

Differential pressure (ΔpV):

Max. differential pressure:
1600 kPa = 16 bar (ΔHmax)
Min. differential pressure:
Low flow (LF): 24 kPa (ΔHmin)
Normal flow (NF): 40 kPa (ΔHmin)
High flow (HF): 80 kPa (ΔHmin)
(Valid for max. position, fully open. Other positions will require lower differential pressure, check with the software HySelect.)

Flow range:

The flow (qmax) can be set within the range:

DN 15/20 (LF): 120-800 l/h
DN 15/20 (NF): 150-1000 l/h
DN 15/20 (HF): 210 -1400 l/h
DN 25/32 (LF): 480 - 3200 l/h
DN 25/32 (NF): 570 - 3800 l/h
DN 25/32 (HF): 810 - 5400 l/h
DN 40/50 (LF): 1140 - 7600 l/h
DN 40/50 (NF): 1400 - 9500 l/h
DN 40/50 (HF): 1900 - 12600 l/h
DN 65 (LF): 2300-15400 l/h
DN 65 (NF): 3240-21600 l/h
DN 65 (HF): 4440 - 29600 l/h
DN 80 (LF): 2500 - 16700 l/h
DN 80 (NF): 3400 - 22700 l/h
DN 80 (HF): 4900 - 32500 l/h
DN 100 (LF): 4000 - 26600 l/h
DN 100 (NF): 6200 - 41200 l/h
DN 100 (HF): 7500 - 50600 l/h
DN 125 (LF): 5350 - 35600 l/h
DN 125 (NF): 8200 - 54900 l/h
DN 125 (HF): 10000 - 66800 l/h

qmax = l/h at each setting and fully open valve plug.

Temperature:

Max. working temperature:
- with measuring points: 120°C
- without measuring points: 150°C
Min. working temperature: -10°C

Media:

Water or neutral fluids, water-glycol mixtures (0-57%).

Max. lift of the control valve:

DN 15-50: 10 mm
DN 65-125: 20 mm

Leakage rate:

Tight sealing

Characteristics:

Indicative shaped EQM, best suited for modulating control.

Material:

Valve body: Ductile iron EN-GJS-400-15
Valve insert: Brass
Throttle plug: Stainless steel
Valve plug: Stainless steel
Valve seat: Stainless steel
Seat seal: EPDM
Spindle: Stainless steel
Δp insert: Stainless steel (plastic components for DN 15-50)
Δp seat: Ryton plastic
Springs: Stainless steel

Surface treatment:

Electrophoretic painting.

Marking:

IMI TA, DN, PN, Kvs, material and flow direction arrow.

Connection:

DN 15-50: External threads according to ISO 228. (Separate connections with NPT threads available.)
DN 65-125: Flanges according to ASME/ANSI B16.42 Class 150.

Actuators:

DN 15-50: TA-Slider 500
DN 65: TA-Slider 750*
DN 80 LF/NF: TA-Slider 750*
DN 80 HF: TA-Slider 1600*
DN 100 LF: TA-Slider 750*
DN 100 NF/HF: TA-Slider 1600*
DN 125: TA-Slider 1600*

*) Adapter 52 757-907 needed.

For more details on actuators, see separate technical leaflets.

KTM 512 can be equipped with adapters for the most common actuators - see "Adapters for actuators".
The max. lift of the actuator must be checked. In the case of a shorter lift the maximum achieved flow will be decreased. Consult your local sales office for details.

Articles

Articles – With measuring points (max. 120°C)

DN 65-125

Flanges – Do not need any separate connections.

Flanges according to ASME/ANSI B16.42 Class 150.

Class 150

DN	D	L	H1	H2	B	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
65	220	290	110	175	136	15,4	22	3831112529533	52 764-665
80	220	310	110	175	134	16,7	24	3831112529540	52 764-680
100	320	350	160	196	179	26,6	54	3831112529557	52 764-690
125	320	400	160	196	178	35,6	58	3831112529564	52 764-691
NF, normal flow
65	220	290	110	175	136	21,6	22	3831112527515	52 751-065
80	220	310	110	175	134	22,7	24	3831112527522	52 751-080
100	320	350	160	196	179	41,2	54	3831112527539	52 751-090
125	320	400	160	196	178	54,9	58	3831112527546	52 751-091
HF, high flow
65	220	290	110	175	136	29,6	22	3831112527553	52 751-165
80	220	310	110	175	134	32,5	24	3831112527560	52 751-180
100	320	350	160	196	179	50,6	54	3831112527577	52 751-190
125	320	400	160	196	178	66,8	58	3831112527584	52 751-191

→ = Flow direction

DN 65-125

Flanges – Do not need any separate connections.

Flanges according to ASME/ANSI B16.42 Class 150.

Class 150

DN	D	L	H1	H2	B	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
65	220	290	110	175	136	15,4	22	3831112529533	52 764-665
80	220	310	110	175	134	16,7	24	3831112529540	52 764-680
100	320	350	160	196	179	26,6	54	3831112529557	52 764-690
125	320	400	160	196	178	35,6	58	3831112529564	52 764-691
NF, normal flow
65	220	290	110	175	136	21,6	22	3831112527515	52 751-065
80	220	310	110	175	134	22,7	24	3831112527522	52 751-080
100	320	350	160	196	179	41,2	54	3831112527539	52 751-090
125	320	400	160	196	178	54,9	58	3831112527546	52 751-091
HF, high flow
65	220	290	110	175	136	29,6	22	3831112527553	52 751-165
80	220	310	110	175	134	32,5	24	3831112527560	52 751-180
100	320	350	160	196	179	50,6	54	3831112527577	52 751-190
125	320	400	160	196	178	66,8	58	3831112527584	52 751-191

→ = Flow direction

DN 15-50

External thread according to ISO 228.

Separate connections with NPT threads – see "Connections for DN 15-50".

PN 25

DN	d	D	L	H1	H2	B	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
15/20	G1	78	110	45	119	83	0,8	1,5	3831112507692	52 796-220
25/32	G1 1/4	97	150	53	115	90	3,2	2,0	3831112507722	52 796-225
40/50	G2	125	190	66	113	106	7,6	4,5	3831112507753	52 796-240
NF, normal flow
15/20	G1	78	110	45	119	83	1,0	1,5	3831112507708	52 796-020
25/32	G1 1/4	97	150	53	115	90	3,8	2,0	3831112507739	52 796-025
40/50	G2	125	190	66	113	106	9,5	4,5	3831112507760	52 796-040
HF, high flow
15/20	G1	78	110	45	119	83	1,4	1,5	3831112507715	52 796-420
25/32	G1 1/4	97	150	53	115	90	5,4	2,0	3831112507746	52 796-425
40/50	G2	125	190	66	113	106	12,6	4,5	3831112507777	52 796-440

→ = Flow direction

DN 15-50

External thread according to ISO 228.

Separate connections with NPT threads – see "Connections for DN 15-50".

PN 25

DN	d	D	L	H1	H2	B	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
15/20	G1	78	110	45	119	83	0,8	1,5	3831112507692	52 796-220
25/32	G1 1/4	97	150	53	115	90	3,2	2,0	3831112507722	52 796-225
40/50	G2	125	190	66	113	106	7,6	4,5	3831112507753	52 796-240
NF, normal flow
15/20	G1	78	110	45	119	83	1,0	1,5	3831112507708	52 796-020
25/32	G1 1/4	97	150	53	115	90	3,8	2,0	3831112507739	52 796-025
40/50	G2	125	190	66	113	106	9,5	4,5	3831112507760	52 796-040
HF, high flow
15/20	G1	78	110	45	119	83	1,4	1,5	3831112507715	52 796-420
25/32	G1 1/4	97	150	53	115	90	5,4	2,0	3831112507746	52 796-425
40/50	G2	125	190	66	113	106	12,6	4,5	3831112507777	52 796-440

→ = Flow direction

Articles – Without measuring points (max. 150°C)

DN 15-50

External thread according to ISO 228.

Separate connections with NPT threads – see "Connections for DN 15-50".

PN 25

DN	d	D	L	H1	H2	B	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
15/20	G1	78	110	45	119	55	0,8	1,5	3831112529274	52 761-820
25/32	G1 1/4	97	150	53	115	62	3,2	2,0	3831112529304	52 761-825
40/50	G2	125	190	66	113	78	7,6	4,5	3831112529335	52 761-840
NF, normal flow
15/20	G1	78	110	45	119	55	1,0	1,5	3831112529281	52 762-820
25/32	G1 1/4	97	150	53	115	62	3,8	2,0	3831112529311	52 762-825
40/50	G2	125	190	66	113	78	9,5	4,5	3831112529342	52 762-840
HF, high flow
15/20	G1	78	110	45	119	55	1,4	1,5	3831112529267	52 765-720
25/32	G1 1/4	97	150	53	115	62	5,4	2,0	3831112529298	52 765-725
40/50	G2	125	190	66	113	78	12,6	4,5	3831112529328	52 765-740

→ = Flow direction

DN 15-50

External thread according to ISO 228.

Separate connections with NPT threads – see "Connections for DN 15-50".

PN 25

DN	d	D	L	H1	H2	B	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
15/20	G1	78	110	45	119	55	0,8	1,5	3831112529274	52 761-820
25/32	G1 1/4	97	150	53	115	62	3,2	2,0	3831112529304	52 761-825
40/50	G2	125	190	66	113	78	7,6	4,5	3831112529335	52 761-840
NF, normal flow
15/20	G1	78	110	45	119	55	1,0	1,5	3831112529281	52 762-820
25/32	G1 1/4	97	150	53	115	62	3,8	2,0	3831112529311	52 762-825
40/50	G2	125	190	66	113	78	9,5	4,5	3831112529342	52 762-840
HF, high flow
15/20	G1	78	110	45	119	55	1,4	1,5	3831112529267	52 765-720
25/32	G1 1/4	97	150	53	115	62	5,4	2,0	3831112529298	52 765-725
40/50	G2	125	190	66	113	78	12,6	4,5	3831112529328	52 765-740

→ = Flow direction

DN 65-125

Flanges – Do not need any separate connections.

Flanges according to ASME/ANSI B16.42 Class 150.

Class 150

DN	D	L	H1	H2	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
65	220	290	110	175	15,4	22	3831112529588	52 761-965
80	220	310	110	175	16,7	24	3831112529618	52 761-980
100	320	350	160	196	26,6	54	3831112529649	52 761-990
125	320	400	160	196	35,6	58	3831112529670	52 761-991
NF, normal flow
65	220	290	110	175	21,6	22	3831112529595	52 762-965
80	220	310	110	175	22,7	24	3831112529625	52 762-980
100	320	350	160	196	41,2	54	3831112529656	52 762-990
125	320	400	160	196	54,9	58	3831112529687	52 762-991
HF, high flow
65	220	290	110	175	29,6	22	3831112529601	52 765-865
80	220	310	110	175	32,5	24	3831112529632	52 765-880
100	320	350	160	196	50,6	54	3831112529663	52 765-890
125	320	400	160	196	66,8	58	3831112529694	52 765-891

→ = Flow direction

DN 65-125

Flanges – Do not need any separate connections.

Flanges according to ASME/ANSI B16.42 Class 150.

Class 150

DN	D	L	H1	H2	q_max [m³/h]	Kg	EAN	Article No
LF, low flow
65	220	290	110	175	15,4	22	3831112529588	52 761-965
80	220	310	110	175	16,7	24	3831112529618	52 761-980
100	320	350	160	196	26,6	54	3831112529649	52 761-990
125	320	400	160	196	35,6	58	3831112529670	52 761-991
NF, normal flow
65	220	290	110	175	21,6	22	3831112529595	52 762-965
80	220	310	110	175	22,7	24	3831112529625	52 762-980
100	320	350	160	196	41,2	54	3831112529656	52 762-990
125	320	400	160	196	54,9	58	3831112529687	52 762-991
HF, high flow
65	220	290	110	175	29,6	22	3831112529601	52 765-865
80	220	310	110	175	32,5	24	3831112529632	52 765-880
100	320	350	160	196	50,6	54	3831112529663	52 765-890
125	320	400	160	196	66,8	58	3831112529694	52 765-891

→ = Flow direction

Adapters for actuators

For DN 65-125

For recommended actuators

For actuator	EAN	Article No
TA-Slider 750, TA-Slider 750 Fail-safe Plus, TA-Slider 1600, TA-Slider 1600 Fail-safe Plus	3831112512085	52 757-907

For other actuators

For actuator	EAN	Article No
Belimo UNV 003	3831112512283	52 757-901
Belimo NV24 (TA-NV24)	3831112512283	52 757-901
Danfoss AMV 55, AMV 655	3831112533905	52 757-924
HORA MC100 FSE/FSR	3831112511781	52 757-912
Schneider Electric Forta	3831112512092	52 757-906
Siemens SQX, SKD, SAX	3831112510661	52 757-903
TA-MC55, TA-MC55Y	3831112509269	52 757-905
TA-MC100	3831112512085	52 757-907
TA-MC160	3831112511910	52 757-913

For DN 65-125

For recommended actuators

For actuator	EAN	Article No
TA-Slider 750, TA-Slider 750 Fail-safe Plus, TA-Slider 1600, TA-Slider 1600 Fail-safe Plus	3831112512085	52 757-907

For other actuators

For actuator	EAN	Article No
Belimo UNV 003	3831112512283	52 757-901
Belimo NV24 (TA-NV24)	3831112512283	52 757-901
Danfoss AMV 55, AMV 655	3831112533905	52 757-924
HORA MC100 FSE/FSR	3831112511781	52 757-912
Schneider Electric Forta	3831112512092	52 757-906
Siemens SQX, SKD, SAX	3831112510661	52 757-903
TA-MC55, TA-MC55Y	3831112509269	52 757-905
TA-MC100	3831112512085	52 757-907
TA-MC160	3831112511910	52 757-913

For DN 15-50

For recommended actuators

For actuator	EAN	Article No
TA-Slider 500, TA-Slider 500 Fail-safe	-	-
TA-Slider 750, TA-Slider 750 Fail-safe Plus	3831112512023	52 757-035

For other actuators

For actuator	EAN	Article No
Belimo NRDVX-3-T-SI	3831112503595	52 757-001
Belimo NRDVX-SR-T-CA	3831112512047	52 757-037
Belimo UNV 002	3831112511972	52 757-029
Belimo UNV 003	3831112512061	52 757-041
Clorius V2.05, V4.10	3831112500167	52 757-016
Danfoss AMV 10, 13, 20, 23	3831112503465	52 757-008
JCI VA-745x	3831112505490	52 757-002
JCI VA-715x, VA-720x, VA-774x	3831112512009	52 757-033
K&P MD200	3831112512030	52 757-036
Honeywell ML	3831112512078	52 757-042
HORA MC25	3831112504950	52 757-024
HORA MC45	3831112511965	52 757-028
HORA MC100 FSE/FSR	3831112511538	52 757-026
Lineg NL	3831112505339	52 757-007
Samson 5825	3831112500259	52 757-011
Schneider Electric FORTA M400, M800	3831112503007	52 757-019
Siemens SQX, SKD, SKB	3831112505360	52 757-022
Siemens SAX	3831112531703	52 757-045
Sauter AVM 104/114	3831112511989	52 757-030
Sauter AVM115SF901 (TA-R25)	3831112511996	52 757-031
Sauter AVM115SF901 (TA-R25 plastic)	3831112512054	52 757-038
TA-MC55, TA-MC55Y, TA-MC100	3831112512023	52 757-035

For DN 15-50

For recommended actuators

For actuator	EAN	Article No
TA-Slider 500, TA-Slider 500 Fail-safe	-	-
TA-Slider 750, TA-Slider 750 Fail-safe Plus	3831112512023	52 757-035

For other actuators

For actuator	EAN	Article No
Belimo NRDVX-3-T-SI	3831112503595	52 757-001
Belimo NRDVX-SR-T-CA	3831112512047	52 757-037
Belimo UNV 002	3831112511972	52 757-029
Belimo UNV 003	3831112512061	52 757-041
Clorius V2.05, V4.10	3831112500167	52 757-016
Danfoss AMV 10, 13, 20, 23	3831112503465	52 757-008
JCI VA-745x	3831112505490	52 757-002
JCI VA-715x, VA-720x, VA-774x	3831112512009	52 757-033
K&P MD200	3831112512030	52 757-036
Honeywell ML	3831112512078	52 757-042
HORA MC25	3831112504950	52 757-024
HORA MC45	3831112511965	52 757-028
HORA MC100 FSE/FSR	3831112511538	52 757-026
Lineg NL	3831112505339	52 757-007
Samson 5825	3831112500259	52 757-011
Schneider Electric FORTA M400, M800	3831112503007	52 757-019
Siemens SQX, SKD, SKB	3831112505360	52 757-022
Siemens SAX	3831112531703	52 757-045
Sauter AVM 104/114	3831112511989	52 757-030
Sauter AVM115SF901 (TA-R25)	3831112511996	52 757-031
Sauter AVM115SF901 (TA-R25 plastic)	3831112512054	52 757-038
TA-MC55, TA-MC55Y, TA-MC100	3831112512023	52 757-035

Connections

Threads according to ANSI/ASME B1.20.1-1983.Swivelling nut

With internal thread NPT

Threads according to ANSI/ASME B1.20.1-1983.
Swivelling nut

d1	d2	L1*	EAN	Article No
G1	1/2 NPT	49	3831112533516	52 751-311
G1	3/4 NPT	58	3831112533523	52 751-312
G1 1/4	1 NPT	73	3831112533394	52 751-307
G1 1/4	1 1/4 NPT	80	3831112533400	52 751-308
G2	1 1/2 NPT	82	3831112533417	52 751-309
G2	2 NPT	93	3831112533424	52 751-310

*) Fitting length (from the gasket surface to the end of the connection).

Other types of connections (ISO), see international version of KTM 512.

With internal thread NPT

Threads according to ANSI/ASME B1.20.1-1983.Swivelling nut

With internal thread NPT

Threads according to ANSI/ASME B1.20.1-1983.
Swivelling nut

d1	d2	L1*	EAN	Article No
G1	1/2 NPT	49	3831112533516	52 751-311
G1	3/4 NPT	58	3831112533523	52 751-312
G1 1/4	1 NPT	73	3831112533394	52 751-307
G1 1/4	1 1/4 NPT	80	3831112533400	52 751-308
G2	1 1/2 NPT	82	3831112533417	52 751-309
G2	2 NPT	93	3831112533424	52 751-310