References
Petroleum Refinery Jedlicze S.A. has collaborated with POLNA SA for many years. We are very satisfied with the services, materials and technical advices.
Zbigniew Laba
Rafineria Nafty JEDLICZE S.A.
Newsletter
Be up to date, enter your e-mail and subscribe the newsletter
THREE-WAY CONTROL VALVES 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 acutators (upon request) electric actuators, handwheels type 20 or with no drives.
| Nominal sizes /diameter/ | DN15; 20; 25; 32; 40; 50; 65; 80; 100; 150; 200; 250 |
| Nominal pressure |
• PN10; 16; 25; 40
• CL150; CL300 |
| Flow ratio | 0,63 ... 320 m3/h |
| Control characteristics | linear |
| Rangeability | 50:1 |
| Leakage class |
IV class acc PN-EN 60534-4 VI class acc PN-EN 60534-4 class from B to G acc PN-EN 12266-1 |
| Media temperature | - 196 ... + 450°C |
| Body materials |
cast iron EN-GJL 250 spheroidal iron EN-GJS 400-18LT carbon steel GP 240 GH (1.0619), WCB carbon steel for low temperatures G20Mn5 (1.6220)stainless steel GX5CrNiMo 19-11-2 (1.4408), CF8M Use of other materials is possible but must be agreed upon. |
| Non-catalogue products | We can adjust these parameters to your individual needs. In such cases, please contact our technical support specialists. |
- 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 applicaiton 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 94/9/EC,
- 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 Directive 97/23/EC, and regulations of AD2000 Merkblatt, designated for installation on pipelines.
