1. General Introduction
Fisher EZ control valve is the unbalanced plug type for throttling or on/off control in chemical or hydrocarbon processing applications, The single-port, globe-style body design offers quick-change trim and a post-guided, unbalanced valve plug. The EZ valve is used in chemical or hydrocarbon processing applications or wherever control of non-lubricating, viscous, or other hard-to-handle fluids is required. Metal-to-metal seating is standard for all general applications over a wide range of pressure drops and temperatures. Metal-to-PTFE seating is optional for stringent shutoff requirements. Trim temperature capability with standard metal seats to 427 ℃, shutoff leakage rate up to VI. It mainly come with typical features as below:
Trim Designed for Stability: Post guiding provides valve plug stability with less chance of a sticking valve plug due to non-lubricating or sticky process fluids or build-up of entrained solids. Post guiding stabilizes the valve plug at all points in its travel range to reduce vibration, mechanical noise, and trim wear.
Sour Service Capability: Unless otherwise noted, references are to NACE MR0175-2002. Optional materials are available to meet NACE MR0103 and NACE MR0175 / ISO 15156.
Standard three different flow characteristics: quick-opening, linear and equal percentage.
Class V or Class VI Shutoff: Higher leakage rate compare to ED series.
Multi material selectable: Carbon Steel, Stainless, Alloy
Process Connection Type: Flanged, Butt Weld, RTJ, Threaded, Socket Weld
Easy Maintenance: Interchangeable seat with ED and ET series, also can stay in the pipeline during removal of trim parts for inspection or maintenance.
2. Comparable table of Fisher E series Valve
Type | Guide type | Plug type | Shut off | Temperature | Soft Seat | Seal Ring | Others |
ED | Cage | Balanced | II to III | 427℃ | No | Graphite | C seal |
ET | Cage | Balanced | IV-V | 204℃ | Yes | PET | |
ES | Cage | Un-Balanced | VI | 538℃ | Yes | No | |
EZ | Cage/guide | Un-Balanced | VI | 427℃ | Yes | No | |
Notes: | 1. Dimension and pressure rating of E series valve is same, thus valves can be interchanged, but internal parts are different. | ||||||
2. E series valves are top guided type, also easy remove and change internal parts for maintenance. |
3. EZ series Port Diameters, Valve Plug Travel, and Stem and Yoke Boss Diameters
Full-Sized Trim [NPS] | Port Diameter [mm] | Valve Plug Travel [mm] | Standard Stem [mm] |
1/2 or 3/4 | 25.4 | 19 | 9.5 |
1 | 25.4 | 19 | 9.5 |
1 1/2 | 38.1 | 19 | 9.5 |
2 | 50.8 | 29 | 12.7 |
3 | 76.2 | 38 | 12.7 |
4 | 101.6 | 51 | 12.7 |
4. Typical section drawings for EZ series
Address: P.O. Box 17033, Jebel Ali Free Zone - South 2 Dubai, United Arab Emirates
Tel: +971558915937
Fax: +971558915956
E-mail:
info@rostockgroup.com
technical@rostockgroup.com
commercial@rostockgroup.com
Get the latest special offers and discount information sent to your email address.
Copyright © Rostock Group Co.,Limited All Rights Reserved. Sitemap