Description
The KLD30S/SJ Normal On/Off reduced bore 2-way motorized ball valve features female thread connections. Available in DN20, DN25, and DN32. The valve body and bonnet come in nickel-plated brass, 304, or 316L stainless steel. The ball is available in 304/316L, PPO, or a special wear-resistant option. PTFE ball seats ensure reliable sealing. The reduced bore design provides cost-effective flow control for applications where full port is not required. The 30S model includes a manual override handwheel. The 30SJ omits it for compact installations. The actuator can be upgraded to a service life of up to 500,000 cycles. High-temperature mounting brackets are available for media up to 150°C. Manufactured under an ISO 9001 quality management system.
Technical specifications
Valve Type: Reduced Bore 2-Way Motorized Ball Valve
Sizes: DN20, DN25, DN32
Pressure: Maximum 1.0 MPa (PN10)
Flow: Varies with valve size and application
Medium Temperature: 0–100°C / 120°C / 150°C
Ambient Temperature: -20°C to 45°C (customizable) ※1
This valve is widely used in industrial automation, water treatment, and fluid control systems where full-port flow is not essential. The reduced bore design offers a compact and economical solution. Suitable for low-flow water supply, drainage, and environmental protection applications. Handles both liquid and gas media. Available in three port sizes with optional high-temperature brackets for demanding thermal environments.
※1 Customization is available for temperatures outside the range of>45°C or<-20°C.
① t<-40°C, connect power at least 15 mins (30 mins recommend) before usage.For higher ambient temperatures, warm-up time may be reduced.
② t<- 40°C for long time, add protection to the actuator, eg: heating cable.Not required at ambient t ≥ -15°C.
Applications
Industrial automation & instrumentation
Intelligent water-saving controllers & actuated terminals
Environmental protection, low-flow, water supply & drainage, water treatment
Wirings & Electrical Parameters Table
Without Manual Override 【30SJ】
| Wiring | Nominal Voltage | Voltage Range | Max. Power | Operating Current | Quiescent Current | External Fuse ※2 | |
| B3(S) BD3(S) | DC5V | DC4-8V | 4W | ≤55mA | 15±5mA | 2A | |
| DC12V | DC10-15V | 4W | ≤30mA | 15±5mA | 1A | ||
| DC24V | DC20-28V | 4W | ≤40mA | 10±5mA | 1A | ||
| AC220V | AC95-265V | 7W | ≤10mA | 10±5mA | 1A | ||
| KT2(S) KT32(S) | DC5V | DC4-8V | 7W | ≤1.1A | 20±5mA | 3A | |
| DC12V | DC10-15V | 10W | ≤835mA | 20±5mA | 2A | ||
| DC24V | DC20-28V | 10W | ≤420mA | 20±5mA | 1A | ||
| AC220V | AC95-265V | 15W | ≤70mA | 10±5mA | 1A | ||
With Manual Override 【30S】
| Wiring | Nominal Voltage | Voltage Range | Max. Power | Operating Current | Quiescent Current | External Fuse ※2 | |
B2(S/J) B3(S/J) BD3(S/J) B33(J) B43.B44 | DC12V | DC10-15V | 8W | ≤120mA | 70±5mA | 2A | |
| AC/DC24V | AC16-30V | 7W | ≤100mA | 40±5mA | 1A | ||
| DC16-40V | |||||||
B3(J) BD3(J) B33(J) | AC220V | AC95-265V | 10W | ≤25mA | 10±5mA | 1A | |
KT2(S/J) KT32(S/J) | DC12V | DC10-15V | 10W | ≤920mA | 35±5mA | 2A | |
| AC/DC24V | AC12-30V | 12W | ≤520mA | 35±5mA | 2A | ||
| DC12-40V | |||||||
KT2(J) KT32(J) | AC220V | AC95-265V | 19W | ≤90mA | 20±5mA | 1A | |
High-speed
| Wiring | Nominal Voltage | Voltage Range | Max. Power | Operating Current | Quiescent Current | External Fuse ※2 | |
B3(J) BD3(J | DC24V | DC20-26V | 12W | ≤300mA | 15±5mA | 2A | |
KT2(J) KT32(J) | DC24V | DC20-26V | 25W | ≤1.05A | 25±5mA | 3A | |
※2 External fast-blow fuse specifications: Rated current ≥ 2-5 times the Max. nominal current of a single motorized valve.For multiple valves connected in parallel, the fuse rating should be increased according to actual requirements.
Notes: For the Fail-Safe function, please select the KT series control. The parameters listed above are standard.For more details, please consult our sales personnel.
Main Components Diagram
Main Components
| No. | Part | Material | Qty |
| 1 | Body | Nickel-plated Brass/304/316L | 1 |
| 2 | Ball | 304/316L/PPO/Special wear-resistant ball | 1 |
| 3 | Bonnet | Nickel-plated Brass /304/316L | 1 |
| 4 | Stem | Brass/304/316L | 1 |
| 5 | Ball seat ※3 | PTFE | 2 |
| 6 | Bonnet seal | EPDM/NBR/FPM ※4 | 1 |
| 7 | Stem seal | EPDM/NBR/FPM ※4 | 1 |
| 8 | Mounting bracket | PA66 | 1 |
| 9 | Sight window | Transparent PC | 1 |
| 10 | Handwheel ※5 | POM | 1 |
| 11 | Label | PC | 1 |
| 12 | Top cover | PC alloy ※6 | 1 |
| 13 | Cable gland lock nut | PA66 | 1 |
| 14 | Bottom cover | PC alloy ※6 | 1 |
※3 For gaseous media, wear-resistant PTFE is recommended.
※4 Other materials are customizable.
※5 30SJ series without handwheel.
※6 Avoid direct or indirect contact between PC and organic solvents such as toluene, xylene,ketones, dichloromethane, trichloromethane, and chloroform etc., due to corrosion resistance characteristics of PC materials.
| Dimensions-30S 【DN20-DN32】 | Dimensions-30SJ 【DN20-DN32】 |
 | |
Dimensions (mm)
| Body type | Connection type | DN | d | L1=L2 | L | H | H1 | H2 | F | G1 | Material | W(kg) | |
| 30S | 30SJ | ||||||||||||
| Reduced bore 2-way | Female thread | DN20 | 15 | 15 | 64.5 | 103.25 | 99.75 | 16.5 | 21.25 | 30 | G3/4" | Cu/304/316L | - |
| DN25 | 20 | 18 | 76.0 | 111.75 | 108.25 | 21.5 | 24.75 | 38 | G1" | Cu/304/316L | - | ||
| DN32 | 20 | 20 | 80.0 | 114.25 | 110.75 | 24.0 | 24.75 | 48 | G1-1/4" | Cu | - | ||
Note:
1. Part dimension tolerances are in accordance with GB/T 1804-2000, Class m.
2. Assembly tolerance: ±2 mm.
3. Optional port threads: NPT, G, etc. Please specify when ordering.
4. For medium temperatures from 100°C to 150°C, a high-temperature mounting bracket is required. Overall height = H + 33 mm.
5. For medium temperatures from 150°C to 200°C, a high-temperature mounting bracket is required. Overall height = H + 56 mm.
Attention:
1. Due to batch-to-batch variations, data may be subject to minor changes. The physical product shall prevail. We reserve the right for modifications without prior notice!
2. For applications with limited installation space or strict dimensional requirements, please contact the relevant sales personnel.
Instructions for Manual Override
Manual operation must be performed with power off. Refer to the manual for details.
※Subject to technical changes
