Z291-C-Z Carbon Steel&Z291-B-Z Stainless Steel Series 2/2 Way Pilot Operated Piston Solenoid Valve 〈Self-holding〉-China top 10 valve Manufacturers, Suppliers, Factory

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Z291-C-Z Carbon Steel&Z291-B-Z Stainless Steel Series 2/2 Way Pilot Operated Piston Solenoid Valve 〈Self-holding〉

Z291-C-Z Carbon Steel&Z291-B-Z Stainless Steel Series 2/2 Way Pilot Operated Piston Solenoid Valve 〈Self-holding〉

Product documents:

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Product Details

Features

01.This series products can keep open or closed for a long time when they are suddenly energized and coil’s life span can be longer. Also suitable for high temperature and high pressure fluid control system
02.Nominal diameter: Normal---DN15~200, special---DN250~1100
03.Max. pressure tolerance: Normal---16kgf/cm²
special≥25~3000kgf/cm²
04.Valve position type: Self-holding
05.Valve body material: Cast steel WCB (code: C)---limited for DN25~200 only
SS304 (code: B), SS316 (code: R)
06.Applicable medium: Gas, liquid, steam, oil, etc.
07.Kinematic viscosity value of applicable medium: ≤50CSt (mm²/s)
08.Ambient temperature: -15~75℃
09.Must keep top coil vertically upward＆installed horizontally
10.Sealing material: Ib---NBR (code: N), Ⅱe---EPDM (code: E)
Ⅲc---VITON (code: V), Va---PTFE (code: P)
11.Leakage: Ib, Ⅱe, Ⅲc: 0ml/min, Va: Normal temp. medium---1.5ml/min, steam---0.1ml/min, which are not accurate values
12.Normal voltage: AC220/AC230/AC240V 50/60Hz, DC24V, allowable tolerance ±10%, customization accepted
13.Electric connection: Normal---standard cable box, explosion-proof---normal lead wire (standard length is 1.5m, the electric connection has conventional G1/2"
external thread, and other threads can be customized), special cable box
Note: The color lines are ground lines and the rest are power lines
14.Explosion-proof type can be equipped, explosion-proof mark ExdⅡCT5 Gb (Certificate No.: SYEx18.0960X)
15.Working principle:
Solenoid valve 2# coil de-energizes,1# coil de-energizes after energizing for 3~5s. The energizing process of 1# coil: 1# movable iron core moves to right, 2#
movable iron core moves down under spring force and weight to jam 1# movable iron core with spindle, pilot hole keeps open, valve core opens under the liquid
pressure differential; similarly, solenoid valve 1# coil de-energizes, 2# coil de-energizes after energizing for 3~5s, then the valve is closed

Structure Diagram

Parameter&Dimension

Notes:

1. G thread is the conventional thread, ZG (PT), NPT and other threads can be customized according to users′ requirements.
2. The flange is manufactured according to GB/T9124 standard by default, can also be manufactured according to the standards specified by
users,such as JB/T79-1994, HG/T20592, ANSI,JIS,DIN and other standards.
3. DN15~50 with threaded connection (no carbon steel valve body for valves with DN＜25), DN15~200 with flange connection (no carbon
steel valve body for valves with DN＜25).Customization is needed for DN≥250, please consult our customer service or sales for details.
4. Self-holding type can be customized for Z281 series direct acting/step-by-step direct acting solenoid valve, please consult our customer
service staff or sales for accurate model selection.
5. The feedback output of bottom valve position signal is normally equipped for valves with DN≥25, the feedback output can be customized
in batches for valves with DN＜25.