PTFE-оболоченные межфланцевые дисковые затворы

Size Range: DN50~DN2000
Pressure Range: PN10~PN40
End Connection: Wafer
Material: Carbon Steel, Ductile Iron, Stainless Steel
Seals: Hard Metal Seal
Operation method: Handle or Worm Gear Type
Suitable Medium: Water, Oil, Gas

Product Overview

A hard seal wafer butterfly valve is a compact metal-seated valve designed for reliable shut-off in high-temperature, high-pressure, and abrasive applications. Its wafer design enables easy installation between flanges, while the metal-to-metal seal ensures durability, low leakage, and long service life. Ideal for power, petrochemical, and industrial piping systems, it offers quarter-turn operation, low torque, and minimal maintenance.

Product Features

Metal-seated hard seal for high-temperature and high-pressure applications
Reliable tight shut-off with excellent wear resistance
Compact wafer design for easy, space-saving installation
Low operating torque, suitable for manual, pneumatic, or electric actuation
Fire-safe, bidirectional sealing

Specification Parameters

Components	Materials
Valve body	WCB, alloy steel, stainless steel, QT450-10
disc	WCB, alloy steel, stainless steel, QT450-10
Valve shaft	2Cr13 stainless steel, alloy steel
Seal ring	Stainless steel
Packing	Flexible graphite

Manufacturing standard

Manufacturing standard	JB/T 8527-97
Flange standard	GB9113-2000
Face to Face standard	GB12221-89
Examination standard	GB/T 13927-92

◇ Main Connection Dimensions

Pressure: PN10 (Mpa) – D373 F-10C.P.R (mm)

Nominal DN	L	D1	D	Z-φd	H	H1	W	W1	D0
50	43	125	102	4-18	360	112	200	200	160
65	46	145	122	4-18	380	115	200	200	160
80	49	160	133	8-18	455	120	220	200	160
100	56	180	158	8-18	490	140	240	200	160
125	64	210	184	8-18	490	170	260	200	160
150	70	240	212	8-22	630	180	280	280	240
200	71	295	268	8-22	690	210	320	280	240
250	76	350	320	12-22	830	240	360	280	240
300	83	400	370	12-22	930	290	460	420	310
350	92	460	430	16-22	1010	320	500	420	310
400	102	515	482	16-26	1070	350	540	420	310
450	114	565	532	20-26	1140	380	580	420	310
500	127	620	585	20-26	1200	410	620	420	310
600	154	725	685	20-30	1340	470	660	420	310
700	165	840	800	24-30	1600	550	750	550	400
800	190	950	905	24-33	1780	640	800	550	400
900	203	1050	1005	28-33	1920	710	850	550	400
1000	216	1160	1110	28-36	1960	770	1000	750	500
1200	254	1380	1330	32-39	2360	875	1050	750	500
1400	279	1590	1530	36-42	2530	970	800	890	–
1600	318	1820	1750	40-48	2640	1100	800	890	–
1800	356	2020	1950	44-48	2800	1200	830	920	–
2000	406	2230	2150	48-48	3100	1290	850	940	–

Pressure: PN16 (Mpa) – D373 F-16C.P.R (mm)

Nominal DN	L	D1	D	Z-φd	H	H1	W	W1	D0
50	43	125	102	4-18	360	112	200	200	160
65	46	145	122	4-18	380	115	200	200	160
80	49	160	133	8-18	455	120	220	200	160
100	56	180	158	8-18	490	140	240	200	160
125	64	210	184	8-18	490	170	260	200	160
150	70	240	212	8-22	630	180	280	280	240
200	71	295	268	12-22	690	210	320	280	240
250	76	355	320	12-26	830	240	360	280	240
300	83	410	370	12-26	930	290	460	420	310
350	92	470	430	16-26	1010	320	500	420	310
400	102	525	482	16-30	1070	350	540	420	310
450	114	585	532	20-30	1140	380	580	420	310
500	127	650	585	20-33	1200	410	620	420	310
600	154	770	685	20-36	1340	470	660	420	310
700	165	840	800	24-36	1600	550	750	550	400
800	190	950	905	24-39	1780	640	800	550	400
900	203	1050	1005	28-39	1920	710	850	550	400
1000	216	1170	1110	28-42	1960	770	1000	750	500
1200	254	1390	1330	32-48	2360	875	1050	750	500
1400	279	1590	1530	36-48	2530	970	800	890	–
1600	318	1820	1750	40-56	2640	1100	800	890	–

Pressure: PN25 (Mpa) – D373 F-25C.P.R (mm)

Nominal DN	L	D1	D	Z-φd	H	H1	W	W1	D0
50	43	125	102	4-18	360	112	200	200	160
65	46	145	122	8-18	380	115	200	200	160
80	49	160	133	8-18	455	120	220	200	160
100	56	190	158	8-22	490	140	240	200	160
125	64	220	184	8-26	490	170	260	200	160
150	70	250	212	8-26	630	180	280	280	240
200	71	310	268	12-26	690	210	320	280	240
250	76	370	330	12-30	830	240	360	280	240
300	83	430	390	16-30	930	290	460	420	310
350	92	490	450	16-33	1010	320	500	420	310
400	102	550	505	16-36	1070	350	540	420	310
450	114	600	555	20-36	1140	380	580	420	310
500	127	660	610	20-36	1200	410	620	420	310
600	154	770	720	20-39	1340	470	660	420	310
700	165	875	820	24-42	1600	550	750	550	400
800	190	990	930	24-48	1780	640	800	550	400
900	203	1090	1030	28-48	1920	710	850	550	400
1000	216	1210	1140	28-56	1960	770	1000	750	500

Pressure: PN40 (Mpa) – D373 F-40C.P.R (mm)

Nominal DN	L	D1	D	Z-φd	H	H1	W	W1	D0
50	43	125	102	4-18	360	112	200	200	160
65	46	145	122	8-18	380	115	200	200	160
80	64	160	133	8-18	455	120	220	200	160
100	64	190	158	8-22	490	140	280	200	160
125	70	220	184	8-26	490	170	280	200	160
150	76	250	212	8-26	630	180	280	280	240
200	89	320	268	12-30	690	210	280	280	240
250	114	385	330	12-33	825	240	280	280	240
300	114	450	390	16-33	908	290	450	420	310
350	127	510	450	16-36	960	320	450	420	310
400	140	585	505	16-39	1330	350	540	437	310

Specification Applications

Steam and high-temperature pipelines in power plants and industrial heating systems
Oil & gas processing systems, including high-pressure and fire-safe applications
Thermal oil and heat transfer systems requiring metal-to-metal sealing
Chemical and petrochemical plants handling high-temperature or abrasive media
Metallurgy, cement, and mining industries with harsh operating conditions
Boiler systems and auxiliary piping where reliable shut-off is critical
Industrial water and wastewater systems operating at elevated temperatures or pressures

Управление потоком

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Промышленные клапаны

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