KLD20S On/Off Control 2-Way Motorized Ball Valve

KLD 20S Series Electric Ball Valve, equipped with an on/off actuator, rated for up to 70,000 cycles. Compact design with multiple small-diameter options. CE and ISO 9001 certified. Optional handwheel operation available.

Brand:	KLD
Valve Type:	20S Series Electric Ball Valve
Size:	1/4 ～ 1-1/4"
Voltage:	DC 5V, DC 12V, AV/DC 5V, AC 220V, DC 24V optional
Media Pressure:	Up to 1.0 MPa (PN10)
Media Temperature:	0°C to 100°C
Ambient Temperature:	-20°C to 45°C
Ambient Humidity:	IP67 type – ≤85% RH (non-condensing)
	Moisture-resistant type – >85% RH

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KLD20S Catalog Manual

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Ball Valve

A ball valve controls flow by adjusting the opening of a spherical element. It forms a tight seal with the seat for zero or minimal leakage, and operates with a quick 90° turn. The full-bore design ensures low pressure loss, while its compact size suits space-constrained or modular systems. Ideal for tight shutoff and emergency stop applications.

20S Series Actuator

The 20S electric ball valve actuator supports a wide voltage range from DC 5V to AC 220V. Compact in size, it delivers up to 70,000 cycles with a fast 2-second open/close response. Certified with CE and ISO 9001, it passes insulation and dielectric tests to ensure safe, stable operation. Rated IP67 for water and dust protection, and available in a moisture-resistant version for humid or low-temperature environments. Features flexible wiring, easy installation, low noise, and maintenance-free performance.

20S Series Metal Valve Body

•Body Materials: Nickel-plated brass, 304 stainless steel, 316L stainless steel
•Ball Materials: 304, 316L, PPO
•Seal Materials: EPDM, NBR, FKM
•Applicable Media: Liquids and gases
•Size Range: Refer to valve specifications; available from DN8 to DN32

Multiple Valve Body Designs and Connection Types

The 20S series offers various ball valve body structures and connection options:
• Flow Configurations: 2-way (straight-through), 3-way
• Connection Types: Female thread, male thread
• Bore Types: Full bore, reduced bore

Optional Handwheel

The actuator comes in two versions: handwheel (S) for manual override, and non-handwheel (SJ) for fully automatic electric operation.
■ Handwheel Operation Instructions
1. Manual operation must be performed with power off. To operate, lift the manual override button and slowly turn the handwheel to the desired valve position.
2. In the indicator window, the red line parallel to the pipeline indicates "open", while perpendicular indicates "closed."

Applications

■ Industrial automation equipment and instrumentation
■ Smart water-saving controllers and system actuators
■ Environmental protection, low flow rate, water supply and drainage, and water treatment projects

No.	Part Name	Available Materials
1	Valve Body	Nickel-Plated Brass / 304 / 316L
2	Ball	304 / 316L / PPO / Special Wear-Resistant Ball
3	Valve Cap	Nickel-Plated Brass / 304 / 316L
4	Stem	Brass / 304 / 316L
5	Ball Seat ※1	PTFE
6	Cap O-ring	EPDM / NBR / FKM ※2
7	Stem O-ring	EPDM / NBR / FKM ※2
8	Mounting Bracket	PA66
9	Coupling	304
10	Window	Transparent PC
11	Handwheel ※3	POM
12	Label	PC
13	Upper Cover	PC Alloy ※4
14	Cable Gland Nut	PA66
15	Lower Cover	PC Alloy ※4

※1 For gas media, wear-resistant PTFE is recommended.
※2 Other materials can be customized.
※3 Handwheel is not included in the 20SJ series.
※4 Please note the chemical resistance of PC material during use. Avoid direct or indirect contact with organic solvents such as toluene, xylene, ketones, dichloromethane, trichloromethane, chloroform, etc.

Full Port Straight Fittings

Valve Type	Connection Type	Nominal Diameter	d	L1 = L2	L	H	H1	H2	F	G1	Material	W (Kg)
Full Flow	Double Internal Thread	DN8	8.00	11.00	43.00	89.00	11.00	18.25	17.00	G1/4"	Cu/304/316L	0.25
		DN10	10.00	11.50	50.00	92.00	12.50	19.75	20.00	G3/8"	304/316L	0.28
		DN15	15.00	13.00	57.00	97.50	16.50	21.25	27.00	G1/2"	Cu/304/316L	0.38
		DN20	20.00	16.00	70.00	107.00	21.50	25.75	32.00	G3/4"	Cu/304/316L	0.54

Notes: If the table is not fully displayed, please scroll left or right.
1. Thread types like NPT and G are available upon request. Please specify when ordering.
2. For media temperatures of 100℃-120℃, a high-temperature bracket is required. Total product height = H + 57mm.
3. For media temperatures of 120℃-150℃, a high-temperature bracket is required. Total product height = H + 107mm.

Quick Install Straight Fittings

Valve Type	Connection Type	Nominal Diameter	d	d1	d2	L	L1	H1	H2	F	H	W (Kg)
Full Bore	Clamp	DN10	10.00	34.00	25.00	75.00	45.00	19.75	17.00	8.50	96.50	-
		DN15	14.00	34.00	27.50	75.00	45.00	21.75	17.00	13.00	98.00	-
		DN20	18.50	34.00	50.50	90.00	50.00	25.75	25.25	17.50	110.75	-

Notes: If the table is not fully displayed, please scroll left or right.
1. Connection threads such as NPT, BSPT, RC, etc., are available upon request. Please specify when ordering.
2. For media temperatures of 100℃-120℃, a high-temperature bracket is required. Total product height = H + 57mm.
3. For media temperatures of 120℃-150℃, a high-temperature bracket is required. Total product height = H + 107mm.

Horizontal 3-Way Fittings

Valve Type	Connection Type	Nominal Diameter	d	L1 = L2 = L3	L	L4	H	H1	H2	F	G1	Material	W (Kg)
Horizontal Three-Way	Full Internal Thread	DN8	6.00	11.70	50.00	38.50	89.00	11.00	18.25	17.00	G1/4"	Cu/304/316L	0.31
		DN10	8.00	13.00	55.00	44.00	92.00	13.00	19.25	20.00	G3/8"	304/316L	0.35
		DN15	12.00	15.00	67.00	54.50	98.00	17.00	21.25	27.00	G1/2"	Cu/304/316L	0.54
		DN20	15.00	15.00	77.00	64.00	103.25	20.25	23.25	31.00	G3/4"	Cu/304/316L	0.71
		DN25	15.00	18.00	94.00	72.50	103.25	20.25	23.25	38.00	G1"	Cu/304/316L	0.98

Valve Type	Connection Type	Nominal Diameter	d	L1 = L2 = L3	L	H (S)	H (J)	H1	H2	F	G1 = G2 = G3	Material	W (Kg)
Vertical Three-Way	Full Internal Thread	DN15	13	13	57	109.5	106	28.5	21.25	27	G1/2"	Cu/304	0.42
		DN20	18	16	70	122.5	119	37	25.75	32	G3/4"	Cu	0.46
		DN25	18	18	76	129.5	126	44	25.75	38	G1"	Cu	0.66

Female-Female Thread Fittings

Valve Type	Connection Type	Nominal Diameter	d	L1 = L2	L	H (S)	H1	H2	F	G1 = G2	Material	W (Kg)
Reduced Bore Two-Way	Double Internal Thread	DN20	15	15	64.5	97.5	16.5	21.25	30	G3/4"	Cu/304/316	0.41
		DN25	20	18	76.0	106.0	21.5	24.75	38	G1"	Cu/304/316	0.60
		DN32	20	20	80.0	108.5	24.0	24.75	48	G1-1/4"	Cu	0.70

Female-Male Thread Fittings

Valve Type	Connection Type	Nominal Diameter	d	L1	L2	L	H (S)	H1	H2	F	G1 = G2	Material	W (Kg)
Reduced Bore Two-Way	Internal-External Thread	DN20	14.0	10.0	15.0	67.5	97.5	16.5	21.25	30	G3/4"	Cu	0.43
	Internal-External Thread	DN25	14.0	12.0	15.0	80.0	99.5	18.5	21.25	37.00	G1"	Cu	0.49
	Extended Internal-External Thread	DN25	14.0	12.0	15.0	90.0	99.5	18.5	21.25	37.00	G1"	Cu	0.53
	Internal-External Thread	DN32	18.5	20.0	13.0	85.0	108.5	24.0	24.75	48.00	G1-1/4"	Cu	0.73

Valve Specs

20S Electric Ball Valve	Full Port	Quick-Connect	Horizontal Three-Way	Vertical Three-Way	Reduced Bore Female-Female	Reduced Bore Male-Female
Reference Image
Size (DN)	8/10/15/20	10/15/20	8/10/15/20/25	15/20/25	20/25/32	20/25/32
Rotation Angle	90°±2°		90°/180°/270°
Applicable Media	Liquids, Gases
Media Temperature	0–100°C
Media Pressure	≤1.0 MPa
Valve Body Material	Stainless Steel 304, 316L
Seal Material	EPDM, NBR, FKM
Thread Type	NPT

Actuator Specs

Actuator Parameters	DC5V	DC12V	AC/DC24V	AC220V	DC24V (Industrial)
Voltage Range	DC4.5~5.5V	DC10~15V	AC9~26V DC9~30V	AC95~265V DC100~300V	DC22~30V
Max Power	3W	3W	4W@NO KT / 5W@KT / 10W@KT2H	5W@NO KT / 8W@KT	10W
Operating Current	≤130mA	≤100mA	≤50mA@NO KT / ≤250mA@KT / ≤400mA@KT2H	≤10mA@NO KT / ≤40mA@KT*1	≤250mA
Static Current	15±5mA	15±5mA	<5mA	<5mA	10±5mA
Fuse Rating	2A	2A	2A	1A	2A
Control Mode	B2(J), B3(J), BD3(J), B33(J), B44		B3(J), BD3(J), KT2H(J), KT32(J), KT2J, B5, B33(J), B44	B3(J), BD3(J), KT32(J), KT2(J), B5, B33(J), B44	B3(J), BD3(J)
	(Refer to the actuator control modes page for wiring & modes)
Operation Time	5~7 sec				2 sec
Electrical Class	Class III (SELV)			Class II (No PE)	Class III (SELV)
Insulation Resistance	100MΩ / 500VDC
Dielectric Strength	500V @ 1min			1500V @ 1min	500V @ 1min
Electrical Interface	2x 0.3mm² cable AC300V (800mm std.) B2, KT2 3x 0.3mm² cable AC300V (800mm std.) B3, BD3, B33, KT32 5x 0.1mm² cable AC300V (800mm std.) B5, B44, B2J, KT2J 6x 0.1mm² cable AC300V (800mm std.) B3J, BD3J, B33J, KT32J
Rated Torque	2N·m
Ambient Temp.	-20°C < t < 45°C (customizable)*2
Flame Class	Non-flame retardant
IP Rating	IP67 RH ≤85% (non-condensing) Moisture-proof model >85% RH *4
Noise Level	Max 75dB(A)
Shock/Vibration	≤2g
Vibration Freq.	10~50Hz, ≤1.0mm double amplitude (customizable)
Mounting	Do not mount face-down
Maintenance	Maintenance-free
Certifications	CE

*1 NO KT = no power-off reset; KT = with power-off reset.
*2 For t >45°C or < -20°C: customizable.
(1) At -40°C, preheat for 15+ min before use (30 min recommended); shorten as temp increases.
(2) At -40°C long-term, thermal insulation is needed (e.g., heating tape); not needed if t > -20°C.

Model	Manual Function	Rated Torque	Opening/Closing Time	Service Life
20S	Yes	2N·m	5~7 sec	Nominal 70,000 cycles
20SJ	No	2N·m	5~7 sec	Nominal 70,000 cycles

Actuator Specifications	DC5V	DC12V	AC/DC24V	AC220V	DC24V
Voltage Range	DC4.5~5.5V	DC10~15V	AC9~26V DC9~30V	AC95~265V DC100~300V	DC22~30V
Max Power Consumption	3W	3W	4W@NO KT / 5W@KT / 10W@KT2H	5W@NO KT / 8W@KT	10W
Operating Current	≦130mA	≦100mA	≦50mA@NO KT ≦250mA@KT ≦400mA@KT2H	≦10mA@NO KT / ≦40mA@KT	≦250mA
Control Modes	B2(J), B3(J), BD3(J), B33(J), B44		B3(J), BD3(J), KT2(J), KT2H(J), KT32(J), B5, B33(J), B44	B3(J), BD3(J), KT32(J), KT2(J), B5, B33(J), B44	B3(J), BD3(J)

When activating the product at -40℃ for a short time, it is recommended to preheat with power for at least 15 minutes (30 minutes preferred). The higher the ambient temperature, the shorter the required heating time.
For long-term operation at -40℃, power-off heating must be used. External heating (actuator + valve body) should be applied for thermal insulation, such as installing heating tape around the electric valve.
If not preheated, the electric valve will not function properly.
@NO KT indicates no power-off return function; @KT indicates with power-off return function.

B2 (J)

Voltage	Range	Power
DC5V	4.5–5.5V	3W
DC12V	10–15V	3W
DC24V	9–30V	4W

1. When SW connects to [OPEN], black is positive and red is negative. The electric valve opens and stays open once fully opened.
2. When SW connects to [CLOSE], red is positive and black is negative. The electric valve closes and stays closed once fully closed.
3. Only applicable to DC-powered valves.

1. When SW connects to [OPEN], black is positive and red is negative. The electric valve opens and stays open once fully opened. At the same time, green and white wires connect to provide the fully open signal.
2. When SW connects to [CLOSE], red is positive and black is negative. The electric valve closes and stays closed once fully closed. At the same time, blue and white wires connect to provide the fully closed signal.
3. Only applicable to DC-powered valves.
Note: During valve operation, the blue, white, and green wires are not connected.

B3 (J)

Voltage	Range	Power
DC5V	4.5–5.5V	3W
DC12V	10–15V	3W
DC24V (Quick-open type)	22–30V	10W
AC/DC24V	AC9–26V / DC9–30V	4W
AC220V	AC95–265V / DC100–300V	5W

1. When SW connects to [OPEN], the electric valve opens and stays open once fully opened.
2. When SW connects to [CLOSE], the electric valve closes and stays closed once fully closed.

1. When SW connects to [OPEN], black is positive, red is negative. The valve opens and stays open once fully opened. Green and white wires are connected at the same time to indicate fully open.
2. When SW connects to [CLOSE], red is positive, black is negative. The valve closes and stays closed once fully closed. Blue and white wires are connected at the same time to indicate fully closed.
3. Only applicable to DC-powered valves.
Note: During operation, blue, white, and green wires are disconnected.

BD3 (J)

Voltage	Range	Power
DC5V	4.5–5.5V	3W
DC12V	10–15V	3W
DC24V (Quick-open type)	22–30V	10W
AC/DC24V	AC9–26V / DC9–30V	4W
AC220V	AC95–265V / DC100–300V	5W

1. When SW is closed, the electric valve opens and stays open once fully opened.
2. When SW is disconnected, the electric valve closes and stays closed once fully closed.

1. When SW is closed, the electric valve opens and stays open once fully opened, and the blue marker is connected to indicate fully open signal.
2. When SW is disconnected, the electric valve closes and stays closed once fully closed, and the yellow marker is connected to indicate fully closed signal.
Note: During valve operation, both blue and yellow markers are disconnected.

B33 (J)

Voltage	Range	Power
DC5V	4.5–5.5V	3W
DC12V	10–15V	3W
DC24V (Quick-open type)	22–30V	10W
AC/DC24V	AC9–26V / DC9–30V	4W
AC220V	AC95–265V / DC100–300V	5W

1. Custom positions cannot be modified after factory setup.
2. For specific flow configurations, refer to "Section 5: Flow Patterns".

1. Feedback signal: During valve operation, both yellow and blue markers are disconnected.
2. Custom positions cannot be modified after factory setup.
3. For specific flow configurations, refer to "Section 5: Flow Patterns".

B44

Voltage	Range	Power
DC5V	4.5–5.5V	3W
DC12V	10–15V	3W
DC24V (Quick-open type)	22–30V	10W
AC/DC24V	AC9–26V / DC9–30V	4W
AC220V	AC95–265V / DC100–300V	5W

1. Custom positions cannot be modified after factory setup.
2. For specific flow configurations, refer to "Section 5: Flow Patterns".

Voltage	Range	Power
AC/DC24V	AC9–26V / DC9-30V	4W
AC220V	AC95–265V / DC100-300V	5W

1. When SW connects to [OPEN] (green and white wires are shorted), the valve opens and remains open once fully opened.
2. When SW connects to [CLOSE] (blue and white wires are shorted), the valve closes and remains closed once fully closed.
Note: Do not connect external power to the white, blue, and green wires.

KT2 (J)

Voltage	Range	Power
AC/DC24V	AC9–26V / DC9-30V	5W
AC220V	AC95–265V / DC100-300V	8W

KT2H (J)

Voltage	Range	Power
AC/DC24V	AC9–26V / DC9-30V	10W
AC220V	AC95–265V / DC100-300V	13W

Normally Closed (NC)
1. When SW is closed, the valve opens and remains open once fully opened.
2. When SW is disconnected, the valve closes and remains closed once fully closed.
Normally Open (NO)
1. When SW is closed, the valve closes and remains closed once fully closed.
2. When SW is disconnected, the valve opens and remains open once fully opened.
Note 1: When KT2 is powered on for operation, the power-on duration should be longer than 60 seconds to ensure the internal energy storage components are sufficiently charged for power-off reset. If charging is insufficient, the valve may not fully return to its default state when power is cut. If the application cannot guarantee power-on for more than 60 seconds, we recommend using the KT32 control mode.
Note 2: KT2H indicates fast-charging version.

Normally Closed (NC)
1. When SW is closed, the valve opens and remains open once fully opened, while green and white wires are connected to give open position signal.
2. When SW is disconnected, the valve closes and remains closed once fully closed, while blue and white wires are connected to give close position signal.
Normally Open (NO)
1. When SW is closed, the valve closes and remains closed once fully closed, while blue and white wires are connected to give close position signal.
2. When SW is disconnected, the valve opens and remains open once fully opened, while green and white wires are connected to give open position signal.
Note 1: During valve operation, neither green-white nor blue-white wires are connected.
Note 2: When KT2J is powered on for operation, the power-on duration should be longer than 60 seconds to ensure sufficient charge for power-off reset. Insufficient charge may result in incomplete return during power cut. If power-on time cannot exceed 60 seconds, we recommend using KT32J mode.
Note 3: When the valve is powered off and closed, the close feedback signal will be cut off once the internal energy storage is depleted (blue-white disconnected).
Note 4: KT2HJ indicates fast-charging version.

KT32 (J)

Voltage	Range	Power
AC/DC24V	AC9–26V / DC9-30V	5W
AC220V	AC95–265V / DC100-300V	8W

Normally Closed (NC)
1. When SW is closed, the valve opens and remains open once fully opened. Blue and brown wires are connected to provide open position signal.
2. When SW is disconnected, the valve closes and remains closed once fully closed. Yellow and brown wires are connected to provide close position signal.
Normally Open (NO)
1. When SW is closed, the valve closes and remains closed once fully closed. Yellow and brown wires are connected to provide close position signal.
2. When SW is disconnected, the valve opens and remains open once fully opened. Blue and brown wires are connected to provide open position signal.
Note 1: During operation, neither the blue-brown nor the yellow-brown wires are connected.
Note 2: After power is cut off, the close signal will be disconnected once the internal energy storage is depleted (yellow-brown line disconnected).

About KLD

KLD is an innovative high-tech company dedicated to the development and manufacturing of electric actuators and motorized valves. Backed by a strong team of professionals in R&D, management, and sales, we hold over 80 proprietary patents and software copyrights, including three protected under the PCT international system. Our operations strictly comply with ISO9000 standards, and our products are certified by CE as well as other regulatory bodies across North America and the EU. With a focus on cutting-edge design, reliable functionality, and exceptional quality, KLD has earned the trust of clients worldwide and proudly exports to over 50 countries.

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