Electric control valve

Flanged 2-way and 3-way electric control valves with modulating (0–10V / 4–20mA) or ON/OFF actuators. Designed for HVAC building management systems, district cooling plants and industrial process control.

Characteristics

Nominal Diameter：   DN25 ~ DN500
Nominal Pressure：   PN16
Work Temperature：   -10°C ~ 150°C
Applicable Media：   Water, ethylene glycol ≤50%
Body Material：   GJL (DN25~DN100) / GJS (DN125~DN500)
Plug Material：   Stainless Steel SS304
Stem Material：   Stainless Steel SS304
Seal Material：   Non-asbestos / Flexible graphite / PTFE
Actuator Control：   Modulating (0–10V / 4–20mA) or ON/OFF
Power Supply：   24V AC/DC or 220V AC
Protection Class：   IP65 (IP68 optional)
Control Accuracy：   ±0.5% of span

Technical Specifications

Parameter	Specification
Design Standard	IEC 60534 / BS EN 1092-2
Test Standard	EN 1349 / BS EN 12266
Flange Standard	BS EN 1092-2 / GB/T 17241.6
Nominal Diameter	DN25 ~ DN500
Nominal Pressure	PN16
Work Temperature	-10°C ~ 150°C
Applicable Media	Water, ethylene glycol ≤50%
Body Material	GJL (DN25~DN100) / GJS (DN125~DN500)
Plug Material	Stainless Steel SS304
Stem Material	Stainless Steel SS304
Seal Material	Non-asbestos / Flexible graphite / PTFE
Actuator Control	Modulating (0–10V / 4–20mA) or ON/OFF
Power Supply	24V AC/DC or 220V AC
Protection Class	IP65 (IP68 optional)
Control Accuracy	±0.5% of span
Fail-Safe Option	Spring-return for power-loss closure

Key Features

Precise flow modulation with 0–10V or 4–20mA analog control signals
Compatible with leading BMS platforms (Siemens, Honeywell, Johnson Controls, etc.)
2-way (Fig. 6151C) and 3-way mixing/diverting (Fig. 6171) configurations
Wide Kvs range 6.3–3,200 m³/h for DN25 to DN500
Pressure-compensated plug option for high ΔP applications
IP65 rated actuator — suitable for plant room and outdoor installations
Manual override for commissioning and emergency operation
End-position feedback and fault alarm contacts
Quick-connect wiring terminals for fast installation and commissioning
BACnet / Modbus RTU communication optional for smart buildings

Available Models

Model	Description
Fig. 6151C – 2-Way Electric Control Valve	DN25~DN150 · Modulating / ON-OFF · Kvs 6.3–400
Fig. 6151KC – 2-Way Compensatory Electric	DN65~DN500 · Pressure-compensated · Kvs 63–3,200
Fig. 6171 – 3-Way Electric Control Valve	DN25~DN200 · Mixing / Diverting · PN16