Clamp-type thin ball valve

[Product Usage]

Q71F PN16~PN64 flange ball valves are used on various pipelines of Class150~Class1500, PN16~PN64, JIS10K~JIS20K, for cutting off or connecting media in pipelines. Different materials are selected and can be applied to various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, acetic acid, oxidizing media, urea, etc.

[Product Features]

1. Among various valves, ball valves have low flow resistance. When a full diameter ball valve is opened, the ball channel, valve body channel, and connecting pipe diameter are equal and form one diameter, allowing the medium to flow almost without loss.

2. The ball valve can be fully closed and fully opened by rotating 90 degrees, with quick opening and closing. Compared with gate valves and globe valves of the same specifications, ball valves have a smaller volume and lighter weight, making them easier to install in pipelines.

Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

[Performance Parameters]

Model		Q71F-16C	Q71F-16P
		Q71F-25C	Q71F-25P
Working pressure (M（MPa）		1.6~2.5
Applicable temperature（℃）		≤180
Applicable Medium		Water, steam, oil products	Weakly corrosive medium
Material	Valve body and valve cover	Carbon steel cast steel	Chromium-nickel stainless steel
	Sphere, valve stem	Chromium/chromium-nickel/chromium-nickel-molybdenum stainless steel	Chromium-nickel stainless steel
	Sealing ring	Flexible graphite gasket /316+ flexible graphite gasket
	Packing material	Polytetrafluoroethylene

Main connection dimensions

Nominal diameter DN	Main external connection dimensions
Nominal diameter DN	L	D	D1	D2	B	Z-d	H	W
Q71F-16C Q71F-16P
15	130	95	65	45	14	4-14	78	140
20	140	105	75	55	14	4-14	84	160
25	150	115	85	65	14	4-14	95	180
32	165	135	100	78	16	4-18	150	250
40	180	145	110	85	16	4-18	150	300
50	200	160	125	100	16	4-18	170	350
65	220	180	145	120	18	4-18	195	350
80	250	195	160	135	20	8-18	215	400
100	280	215	180	155	20	8-18	250	500
125	320	145	210	185	22	8-18	265	600
150	360	280	240	210	24	8-23	270	800
200	400	335	295	265	26	12-23	330	800
250	530	405	355	320	30	12-25	450	1300
Q71F-16C Q71F-16P
15	130	95	65	45	16	4-14	103	100
20	140	105	75	55	16	4-14	112	160
25	150	115	85	65	16	4-14	123	160
32	165	135	100	78	18	4-18	150	250
40	180	145	110	85	18	4-18	156	250
50	200	160	125	100	20	4-18	172	350
65	220	180	145	120	22	8-18	197	350
80	250	195	160	135	22	8-18	222	450
100	280	230	190	160	24	8-23	253	450
125	320	270	220	188	28	8-25	275	600
150	360	300	250	218	30	8-25	286	800
200	400	360	310	278	34	12-25	340	1200
250	530	425	370	332	36	12-30	470	1400