Electric Bellows-Sealed Control Valve

ZRHP/M-BWG Electric Bellows-Sealed Control Valve consists of a 3810 Series (PSL Series) electronic electric actuator and a low-flow-resistance control valve body. The electric actuator features an integrated structure with a built-in servo amplifier. Inputting control signals (4-20mADC or 1-5VDC) and power supply enables precise valve opening control, achieving regulation of process parameters such as pressure, flow rate, liquid level, and temperature. The valve plug employs an upper-guided structure with a compact design and an S-shaped streamlined flow passage. This configuration minimizes pressure drop, maximizes flow capacity, offers a wide adjustable range, and ensures high flow characteristic accuracy, conforming to IEC 534-1-1976 standards. The upper bonnet employs a bellows seal structure, making the electric bellows-sealed control valve suitable for regulating highly corrosive, flammable, explosive, volatile, and rare/precious metal media. Additionally, this valve can be used

Detail

Parameters

Technical Specifications

Nominal Diameter(DN)		20	25	32	40	50	65	80	100	125	150	200	250	300
Seat diameter(dn)		20	25	32	40	50	65	80	100	125	150	200	250	300
Rated Flow Coefficient(KV)	Single-seat	6.9	11	17.6	27.5	44	69	110	176	275	440	630	875	1250
Rated Flow Coefficient(KV)	sleeve	6.3	10	16	25	40	63	100	155	250	370	580	900	1300
Permissible pressure differential(MPa)	Single-seat	3.8	3.2	3.0	2.0	1.8	1.5	1.4	1.0	0,7	0.6	0.5	0.3	0.1
Permissible pressure differential(MPa)	Sleeve	6.4	6.4	5.2	5.2	4.6	4.6	3.7	3.7	3.5	3.1	3.1	2.6	2.2
Nominal Pressure(MPa)		1.6, 2.5, 4.0, 6.4
Rated stroke(mm)		16			25		40			60			100
Valve bonnet type		Bellows-sealed type -40 to +350°C
Cap Form		Bolt-clamping type
Sealing Packing		V-shaped PTFE packing, V-shaped flexible graphite packing
Valve Core Type		Single-seat type, sleeve type
Flow Characteristics		Equal percentage, linear
Configure Actuator Category		3810 Series, PSL Series, and other electric actuators (customer-specified brands also available)
Actuator Parameters		Power Supply Voltage: 220V Input Signal: 4-20mA or 1-5V DC Output Signal: 4-20mA DC
		Protection Rating: Equivalent to IP65 Explosion-proof Marking: ExdⅡBT4 (ExdⅡBT6 for special customization) Manual Operation: Handle
		Ambient temperature: -25 to +70°C Ambient humidity: ≤95%