Pneumatic Jacketed Control Valve
Pneumatic Jacketed Control Valve
Pneumatic Jacketed Control Valve

Pneumatic Jacketed Control Valve

  • Steam jacketed body and bonnet keep process media above crystallization temperature, preventing viscosity increase and solidification
  • CV3000 series; leakage complies with ANSI B16.104; compact HA multi-spring diaphragm actuator with high output force
  • DN20-200, PN1.0-6.4 MPa; linear or equal percentage; working temperature from -250 °C to +560 °C

Category

Overview

BZJHP pneumatic jacketed control valve, also known as a jacketed (heat-traced) control valve, is one of the CV3000 series products and is suitable for applications requiring heat tracing. When the crystallization temperature of the process medium is lower than the ambient temperature, or when a drop in fluid temperature causes increased viscosity or solidification of the fluid, a steam jacket heating device is added to the valve body and the upper bonnet so that the process medium meets the requirements of process control. The leakage of the valve complies with ANSI B16.104. The pneumatic control valve is equipped with a multi-spring diaphragm actuator with a compact structure and high output force. This product complies with GB/T4213-92.

Technical Parameters

Nominal Diameter DN (mm) (Plug Diameter dn) DN20 (dn10) DN20 (dn12) DN20 (dn15) DN20 (dn20) DN25 DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200
10 12 15 20 25 32 40 50 65 80 100 125 150 200
Rated Flow Coefficient Kv Linear 1.8 2.8 4.4 6.9 11 17.6 27.5 44 69 110 176 275 440 690
Equal percentage 1.6 2.5 4.0 6.3 10 16 25 40 63 100 160 250 400 630
Rated Stroke L (mm) 16, 25, 40, 60
Diaphragm Effective Area Ae (cm2) 280, 400, 600, 1000
Signal Range Pr (kPa) 20~100, 40~200
Air Supply Pressure Ps (MPa) 0.14~0.4
Inherent Flow Characteristic Linear, equal percentage
Inherent Rangeability 50
Allowable Leakage Hard seat: Class IV (10-4 × rated valve capacity); soft seat: Class VI
Nominal Pressure PN (MPa) 1.0, 1.6, 4.0, 6.4
Working Temperature t (°C) Normal type: -20~200, -40~250, -60~250
Cooling-fin type -40~450, -60~450
High-temperature type 450~560
Low-temperature type -60~-100, -100~-200, -200~-250

Valve Body

Item Description
Body Form Straight-through single-seat cast globe valve
Nominal Diameter DN20~200 mm
Nominal Pressure ANSI 150, 300; JIS 10K, 16K, 20K; PN1.6, 4.0 MPa
Connection Type Flanged
Flange Face Type FF, RF, RJ, LG, MFM
Flange Standard JIS B2201-1984, JB/T79.1-94 (PN1.6 MPa), JB/T79.2-94 (PN4.0, 6.4 MPa), ANSI B16.5-1981, HG20594-97, HG20618-97, etc.
Body Material Cast steel (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, ZG316L), titanium, etc.
Bonnet Normal type (P): 0 ~ +230 °C; extension type I (EI): 0 ~ +566 °C
Note Working temperature must not exceed the allowable range of the materials
Gland Type Bolted gland
Packing PTFE-impregnated asbestos packing, braided asbestos packing, graphite packing

Valve Trim

Item Description
Plug Type Single-seat plunger type
Flow Characteristic Equal percentage (%CF) and linear (LCF) characteristics; high-accuracy flow characteristics with Cv from 0.04 to 14, complying with IEC 534-2-1976
Trim Material Stainless steel (1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 17-4PH, 9Cr18, 316L), stainless steel with Stellite hard-facing, titanium and other corrosion-resistant alloys

Actuator

The actuator provides air-to-close or air-to-open valve action.

Item Description
Actuator Type HA multi-spring diaphragm actuator
Diaphragm Material EPDM reinforced with nylon fabric, NBR reinforced with nylon fabric
Spring Range 20~100, 80~240 kPa
Supply Pressure 140~400 kPa
Air Connection RC 1/4"
Ambient Temperature -30 ~ +70 °C

Accessories

Positioner, air filter regulator, lock-up valve, travel switch, valve position transmitter, handwheel mechanism, etc.

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