Control valve type Z3

Three-way control valves type Z3 are used in automatic systems and remote control systems as flow control
elements to adjust flow of liquids and gases. Type Z3M is designed to mix two streams of medium, whereas
type Z3R is designed to split one stream into two. Recommended for application in city-heating and HVAC
systems and many branches of industry. They can be delivered with P/R actuators (basic option) or with P1/
R1; P3/R3 actuators (upon request), electric actuators, handwheels type 20 or with no drives.

Nominal sizes DN15 ; 20 ; 25 ; 32 ; 40 ; 50 ; 65 ; 80 ; 100 ; 150 ; 200 ; 250
Nominal pressure • PN10 ; 16 ; 25 ; 40 • CL150 ; CL300
Flow ratios 0,63 ... 320 m3/h
Plug characteristics and type linear, contoured-piston, other
Rangeability 50:1
Leakage class basic: Class IV as per PN-EN 60534-4 (hard valve seat) - bubble-tight: Class VI as per PN-EN 60534-4 (soft valve seat)
Temperature range - 196 ... + 450°C
Body material grey iron, spheroidal iron, carbon steel, stainless steel, other
  • wide range of nominal dimensions, DN15…150 for nominal pressures PN10…40; CL150; CL300
  • various materials of valve body and internal parts casts, adapted to specific working conditions
  • wide range of flow coefficients
  • reduction in aggressive and toxic fluids emissions to environment through application of bellow seal bonnets or bonnet packings meeting requirements of TA - LUFT
  • easy assembly and dismantling of valve internal parts for maintenance and service
  • high durability and reliability due to application of top-class materials and surface improvement processes (burnishing, stelliting, heat treatment, CrN coatings)
  • possibility of mating with P/R multi-spring actuators (basic option), P1/R1. Full reversibility of actuator operation and changing the spring range with no extra parts
  • optional fitting of pneumatic actuators with a handwheel
  • option of diagnostics of “valve - actuator” system, thanks to application of smart electro-pneumatic positioners
  • high tightness of closure due to application of soft seats (PTFE sealing) in the whole range of flow ratios
  • same flow ratios and control characteristics for “hard” (metal-to-metal) and “soft” (metal-gasket) seats
  • reliable connection between actuator stem and valve, and between screwed in seat and body
  • top-class flat sealing and bonnet packing
  • broad range of electric actuators
  • possibility of mating with handwheels type 20 or NN
  • special executions for oxygen, hydrogen, acidic gases with H2S content, explosive atmospheres - as per ATEX Directive 2014/68/EU
  • competitive prices due to simple and functional design of valves and actuators and materials applied
  • design and production process meet the requirements of Quality Management System ISO 9001 and Direct ive 2014/68/EU, and regulations of AD2000 Merkblatt, designated for installation on pipelines.
We can adjust the control valve according to your individual needs. In such cases, please contact our technical support specialist.