LK 842 ThermoMix® P

LK 842 ThermoMix® P is a 4-way mixing valve for mounting on heating boilers. LK 842 ThermoMix® P is suitable for motorization.

Variants
Detailed Information
Documentation
Accessories & Spare parts
Questions & Answers

Variants

LK 842 - Male thread 1 artikel

Article	Dim.	Kvs m³/h	A mm	B mm	C mm	D mm	E mm	F mm	G mm	H mm	J mm	K mm	L mm	M mm	Weight (kg)	Dimensional sketch	Item List
180879	M ¾"	5,5	84	62	74	97	31	94	30	67	40	57	24	9	0.8

Dim.	M ¾"
Kvs m³/h	5,5
A mm	84
B mm	62
C mm	74
D mm	97
E mm	31
F mm	94
G mm	30
H mm	67
J mm	40
K mm	57
L mm	24
M mm	9
Weight (kg)	0.8
Dimensional sketch
Item list

Article 180879

A mm	84
B mm	62
C mm	74
D mm	97
E mm	31
F mm	94
G mm	30
H mm	67
J mm	40
K mm	57
L mm	24
M mm	9

LK 842 - Compression fitting 2 variants

Article	Dim.	Kvs m³/h	A mm	B mm	C mm	D mm	E mm	F mm	G mm	H mm	J mm	K mm	L mm	M mm	Weight (kg)	Dimensional sketch	Item List
180880	15 mm	5,5	99	62	74	97	31	94	30	67	40	57	24	9	0.8
180881	22 mm	5,5	99	62	74	97	31	94	30	67	40	57	24	9	0.8

Dim.	15 mm
Kvs m³/h	5,5
A mm	99
B mm	62
C mm	74
D mm	97
E mm	31
F mm	94
G mm	30
H mm	67
J mm	40
K mm	57
L mm	24
M mm	9
Weight (kg)	0.8
Dimensional sketch
Item list

Dim.	22 mm
Kvs m³/h	5,5
A mm	99
B mm	62
C mm	74
D mm	97
E mm	31
F mm	94
G mm	30
H mm	67
J mm	40
K mm	57
L mm	24
M mm	9
Weight (kg)	0.8
Dimensional sketch
Item list

Article 180880

A mm	99
B mm	62
C mm	74
D mm	97
E mm	31
F mm	94
G mm	30
H mm	67
J mm	40
K mm	57
L mm	24
M mm	9

Article 180881

A mm	99
B mm	62
C mm	74
D mm	97
E mm	31
F mm	94
G mm	30
H mm	67
J mm	40
K mm	57
L mm	24
M mm	9

Detailed Information

Description

LK 842 ThermoMix® P is a 4-way mixing valve for mounting on heating boilers.

LK 842 ThermoMix® P is suitable for motorization.

The valve can be mounted at any angle. LK 842 ThermoMix® P can easily be adapted for right- or left-hand mounting.

The valve requires no maintenance but the installation should be checked regularly.

Technical Data

Working temperature:	Min. 5 °C/Max. 110 °C (120 °C briefly)
Ambient temperature:	Min. 5 °C/Max. 60 °C
Max. working pressure:	1.0 MPa (10 bar)
Max. differential pressure:	50 kPa (0,5 bar)
Leakage:	< 1.5% of Kvs at 50 kPa
Angle of rotation:	90°
Torque:	< 1 Nm
Media 1:	Water - Glycol mixture max. 50% Ethanol mixture max. 30%
Thread standard:	G - male thread
Material, valve body:	Brass EN 1982 CB753S
Material, internal cover:	PPS Composite
Material, external cover:	Aluminium
Material, slide/spindle:	Brass EN 12165 CW617N
Material, sealing:	EPDM
Spindle sealing:	Two O-rings

Application

Technical Diagrams

Valve Characteristics

Capacity Diagram

Documentation

Product sheet

LK 842 ThermoMix® P

Instruction manual

842 ThermoMix - Instruction_048959

Certificate/Type approval

CE Declaration of Conformity - 830, 831, 840, 841, 842, 845, 846.pdf

Accessories & Spare parts

Article no.	Article	Position
013083	Gasket 842	1
187067	Sealing kit 840/841/842, DN 25-32	2
187071	Repair kit 841/842, DN 25-32	3

Questions & Answers

Is the LK SmartComfort compatible with a mixing valve from another manufacturer?

Yes, we provide mounting kits for other models, see Mounting kits on our website.

Article	Dim.	Kvs m³/h	A mm	B mm	C mm	D mm	E mm	F mm	G mm	H mm	J mm	K mm	L mm	M mm	Weight (kg)
180879	M ¾"	5,5	84	62	74	97	31	94	30	67	40	57	24	9	0.8

Article

Dim.

Kvs m³/h

A mm

B mm

C mm

D mm

E mm

F mm

G mm

H mm

J mm

K mm

L mm

M mm

Weight (kg)

180879

M ¾"

5,5

0.8

Article	Dim.	Kvs m³/h	A mm	B mm	C mm	D mm	E mm	F mm	G mm	H mm	J mm	K mm	L mm	M mm	Weight (kg)
180880	15 mm	5,5	99	62	74	97	31	94	30	67	40	57	24	9	0.8
180881	22 mm	5,5	99	62	74	97	31	94	30	67	40	57	24	9	0.8

Article

Dim.

Kvs m³/h

A mm

B mm

C mm

D mm

E mm

F mm

G mm

H mm

J mm

K mm

L mm

M mm

Weight (kg)

180880

15 mm

5,5

0.8

180881

22 mm

5,5

0.8

Article no.

Article

Position

013083

Gasket 842

187067

Sealing kit 840/841/842, DN 25-32

187071

Repair kit 841/842, DN 25-32

LK Armatur

LK Systems

LK Pex

LK Group

Menu

Products

Valves

Electronic Heat Regulation

Prefabrication

Accessories

Applications

Applications

Support/Service

Downloads

About us

News

Our websites

Products

Support/Service

Professionals

End user

LK 842 ThermoMix® P

Variants

Detailed Information

Documentation

Accessories & Spare parts

Questions & Answers