D71J-16 Midline wafer butterfly valve

D71J-16 Midline wafer butterfly valve Product introduction

　D71J-16 Midline wafer butterfly valve overview:

The D71J-16 Midline wafer butterfly valve has simple structure and reasonable design. Rotate handle 90°, can switch valve easily, and can keep valve stay at the angle needed.

D71J-16 Midline wafer butterfly valve features
● Axillare Adopting no-pin connection, compact structure, easy to transport, install and maintain.
● 90° on/off, worm gear transmission, small operating torque for energy saving.
● Soft seal, zero leakage, long service life.
● Flow characteristic tend to straight line, prefect regulation performance.
● Various of material for parts, can adapted to multiple mediums.
● Surface coating with epoxy resin, well appearance and corrosion resistance.

D71J-16 Midline wafer butterfly valve Technical parameters

D71J-16 Midline wafer butterfly valve Adoption Standard

Item	Adoption standard	Optional standard
Design Manufacture Acceptance	GB/T12238-2008	ISO/DIN10631、API598
Valve structure lengh	GB/T12221-2005	ISO5752
Valve flange length	GB/T9113-2010	ANSI B16.5、ISO7005、JIS B2238、2239
Inspection	GB/T13927-2008	ISO/DIN5208-1987
Mark	GB/T12220-1989	ISO05209-1987

D71J-16 Midline wafer butterfly valve Performance parameter:

Product Name	Midline wafer butterfly valve
Connection	Wafer type
Nominal diamater	DN40～DN150
Nominal pressure	PN10/PN16
Test pressure	Shell test：PN×1.5 Seal test：PN×1.1
Surface treatment	Epoxy coating
Driven type	Steamlined Aluminum Handle or High Strengh malleable Iron Handle
Applicable temperature	-30℃～180℃
Applicable mediums	Water, Salt, Acid, Alkali, Nature gas, Air, Alcohols, oils, food, steam and so on.

D71J-16 Midline wafer butterfly valve Main part material

D71J-16 Midline wafer butterfly valve Optional materials for parts

Name	Optional Materials
Body	Ductile Iron(DI), Gray Cast iron(CI), Cast Steel(WCB), Stainless steel(CF8/CF8M)
Disc	Ductile iron nylon coating(N),Plated ductile iron(D), CF8(P), CF8M(R),Aluminum bronze(T)
Seat	EPDM , NBR. PTFE, VITON, EP, EPDM ,EPDM
Shaft	416SS 316SS 304SS CS45#coating with Ni,P
Actuator	Cast iron worm gear reducer, Cast aluminum worm gear reducer

D71J-16 Midline wafer butterfly valve Main dimension

Specs	inch	H	H1	H2	L	L1	ΦD	N-Φ	ΦD1
mm	in
DN40	1.5"	208	138	60	33	175	110	4-19	65
DN50	2"	210	140	60	42	175	125	4-19	65
DN65	2.5"	230	150	60	45	175	145	4-19	65
DN80	3"	255	160	60	45	175	160	8-19	65
DN100	4"	294	180	75	52	230	180	4-19	90
DN125	5"	316	190	75	55	230	210	4-19	90
DN150	6"	340	200	75	56	230	240	4-23	90

D71J-16 Midline wafer butterfly valve Product order instruction

D71J-16 Matters need attention for installation

1. Pipeline wafer type flange standard should be in accordance with the standard of butterfly valve, dedicated flange of butterfly valve is recommended for wafer type connection flange.
2. Users should check the working conditions if it is accordance with the butterfly valve.
3. Lumen and sealing surface should be cleared up before installation, no waste adhering.
4. Both side of valve seat extruded as seal washer of flange, no need to use seal washer for butterfly valve
5. The D71J-16 butterfly valve could be installed at horizontal, vertical and any other angles of pipelines, and could be used in two-way.
6. The D71J-16 butterfly valve can not be installed at the corners of pipeline, no handstand installation allowed.
7. The D71J-16 butterfly valve must be closed when installing, to assure valve plate not to impact with the pipeline flange.
8. Verify flange welded without defects. Can not weld after installation to avoid to scald rubber articles and antiseptic coatings.
9. For abnormal situations on switching, should check it out, remove faults, do not open or close the valve with external force.

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