PRODUCT
high performance double offset butterfly valve
Size Range : DN40-DN600
Body Construction : Lug /wafer /Flange
Temperature : -40℃-275℃
Pressure : PN10/PN16/PN25/PN40/150LB/300LB
Lever of leakage : VI Zero leaks
Body : WCB / CF8/8M , CF3M /2507/1.4529
Disc : WCB / CF8/8M , CF3M /2507/1.4529
Stem :17H-4
Seat : PTFE /RPTFE / Stainless steel
Application : petroleum/ chemical /vacuum/food /medicine/high temperature and high pressure and low temperature anti - corrossion conditions
Structural Features of the valve
High performance butterfly valve , in addition to the conventional valve had to adapt to the working condition of the medium,according to different medium ,chose different structure material and special processing, can also be used for cryogenic ,vapor , chlorine gas , oxygen ,high vacuum , corrosion and other special conditions .
Product Features
Fire -proof Structure
Fire -proof valve is tested to API607 4th Edition and BS6755 Part II .
Fixed axis
Fixed collar is installed in the top of axis .2-48”(DN50-1200),when axis breaks accident avoid the upper part to move out of gland .
Provide CE marked versions available
CE marked and documented valves that conform to the European Pressure Equipment Directive (PED)97/23/EC are available in ANSI Class 150/300 ,both standard and Fire - Tite construction .Operating torques , Construction potions and valve dimensions are exactly the same as the standard ANSI150/300 offering .
Convenient to maintain and upkeep valve seats
Replace axis only by taking inserts down , without disassembling disc and axis.
Excellent for both On-Off and Control Application
1. Superior control characteristics .
2. Inherent flow characteristic is modified equal percentage .
3. Wide rangeability
4. Tight shut-off even in control applications .
5. Standard lugged style valves are suitable for bidirectional dead -end service at the full pressure temperature rating of the valve .
Single -source Responsibility
1. Purchase valves ,actuators and accessories ,completely mounted from one source.
2.Available the electric , manual gear ,and pneumatic double acting or spring return actuators and a variety of accessories including limit switch,solenoids and positioners .
3.Oem service available through world - wide service centers .
| standard specification | |
| API609 | Flange type clamp type butterfly valve |
| MSS SP-25 | Valve standard marking system |
| MSS SP-44 | Steel pipe flange |
| MSS SP-55 | Quality standrad for steel casting |
| MSS SP-61 | Pressure testing of steel valves |
| MSS SP-69 | Terminology for valves and connectors |
| ANSI B31.3 | Chemical plant and refinery piping |
| ANSI B31.8 | Gas transpor sation and distribution pipe system |
| API 598 | Valve inspection and testing |
| ANSI B16.10 | Face to face and end to end dimensions of ferite valves |
| ANSI B16.5 | Pipe flanges and flanged fittings |
| ANSI B16.47 | NPS26-NPS60 large dameter steel flange |
| ANSI B16.34 | Flange end and butt welding end steel valves |
| ANSI B 31.1 | Power plant pipes |
| ANSI B 31.4 | Anhydrous ammonia and alcohol, system hydrocarbon transportation |
| ANSI/FCI 70-2-1991 | Control valve seat leakage |
Available in a Wide Choice of Material For a Broad Range of Applications
Standard body materials include ductile Iron , Aluminium bronze , carbon steel ,stainless steel monel ,alloy 20 User can also , according to requirements select other materials .
