Tripple offset butterfly valves

(PA900 series)

Description
Catalog
Design
Classifier
The main overall and mounting dimensions
Specifications

Butterfly valves
catalog

Reference-list

Inquiry form for PA
butterfly valves

Stem extensions for butterfly
valves inquiry form

ПА 926.200.16-02Ф ПА 926.200.16-02Ф DN200 PN16

ПА 926.200.16-02Ф
DN 200 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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by request

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ПА 926.300.16-02Ф ПА 926.300.16-02Ф DN300 PN16

ПА 926.300.16-02Ф
DN 300 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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by request

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ПА 926.500.25-02П ПА 926.500.25-02П DN500 PN25

ПА 926.500.25-02П
DN 500 PN 25
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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by request

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ПА 926.500.16-02Ф ПА 926.500.16-02Ф DN500 PN16

ПА 926.500.16-02Ф
DN 500 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.600.16-02Ф ПА 926.600.16-02Ф DN600 PN16

ПА 926.600.16-02Ф
DN 600 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.250.16-02Ф ПА 926.250.16-02Ф DN250 PN16

ПА 926.250.16-02Ф
DN 250 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.150.16-02Ф ПА 926.150.16-02Ф DN150 PN16

ПА 926.150.16-02Ф
DN 150 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.500.25-02Ф ПА 926.500.25-02Ф DN500 PN25

ПА 926.500.25-02Ф
DN 500 PN 25
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.800.16-02Ф ПА 926.800.16-02Ф DN800 PN16

ПА 926.800.16-02Ф
DN 800 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.100.16-02Ф
DN 100 PN 16
body material WCB steel, disk material WCB steel, seat material ss304+graphite

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ПА 926.300.25-02Ф ПА 926.300.25-02Ф DN300 PN25

ПА 926.300.25-02Ф
DN 300 PN 25
body material WCB steel, disk material WCB steel, seat material ss304+graphite

in stock

Price:
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ПА 926.150.25-02Ф ПА 926.150.25-02Ф DN150 PN25

ПА 926.150.25-02Ф
DN 150 PN 25
body material WCB steel, disk material WCB steel, seat material ss304+graphite

in stock

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Description

Butterfly valves with triple offset series PA900 are designed for installation on pipelines as shut-off and control valves.

Triple offset in the valve design minimizes frictional losses during opening and closing, reducing the torque on the stem required for control.

The use of prefabricated metal-graphite or all-metal seat in valves series PA900 allows to operate them under high pressure and temperature conditions, which is an important advantage over valves with elastomer seat.

With opening angles up to 20-70° valves can be used for adjusting the flow of working medium.

These valves are widely used in process pipelines in power engineering, metallurgy, oil, oil refining, petrochemical, chemical industries, water supply and sanitation facilities, and utilities.

Manufacture and supply:	Acc. to TU 3700-001-55604618-2013
Type of construction:	Butterfly valves with triple offset
Nominal diameter:	DN 50 – DN 2000 mm
Nominal pressure:	PN 6 , 10, 16, 25, 40, 63, 100 kgf/cm2
Temperature of working medium:	Up to +500 ° С depending on the seat material
Operation:	– gearbox DN 50-2000 mm – electric or pneumatic actuator DN 50-2000 mm
Leakage class:	«А» acc. to GOST 9544-2015
Main working mediums:	Water, air, steam, natural gas and gaseous hydrocarbons, petroleum, petroleum products, coke oven gas, ammonia, acids, alkalis, alcohols
Connection type:	- wafer type with smooth lugs; - flanged; - welded. Connecting flanges according to GOST 33259-2015
Installation position:	Any, except the position "electric actuator down" for valves with electric actuator
Flow direction of the working mediums:	Unidirectional, along the arrow on the valve body, bidirectional upon request
Climatic version:	У, УХЛ, Т, ТМ, ТВ acc. to GOST 15150-69
Top flange:	Acc. to ISO 5211

Design

Position	Description
1	Body
2	Disk
3	Seat
4	Pressure ring
5	Stem
6	Packing gland flange
7	Packing
8	Bolt
9	Gearbox

Seat materials	Description
Steel SS304 +graphite	Metal-on-metal seat - stack seat of graphite and stainless steel rings
Steel SS304	Metal-on-metal seat is all-metal, used at high temperatures
PTFE	Universal thermal and chemical resistance

Material of body and disk	Description
WCB	Carbon steel for non-corrosive mediums;
CF8	- Corrosion resistant steel, used in aggressive mediums and at low temperatures.
CF8M	- Corrosion resistant steel with molybdenum, used in very aggressive mediums and at low temperatures.
LC2	– Alloyed steel, used at low temperatures.

Classifier

Designation of PA900 series butterfly valves. Image

The main overall and mounting dimensions

Wafer type connection with smooth lugs

Basic overall and connection dimensions of wafer type butterfly valves PA 900. Image

DN	PN10						PN16
	Dimensions, mm					Weight with gearbox, kg	Dimensions, mm					Weight with gearbox, kg
	A	B	L	D1	n*d	Weight with gearbox, kg	A	B	L	D1	n*d	Weight with gearbox, kg
50	70	235	43	125	4х18	11	70	235	43	125	4х18	11
50	70	235	43	125	4×18	11	70	235	43	125	4×18	11
65	75	250	46	145	4×18	12	75	250	46	145	4×18	12
80	85	150	49	160	4×18	13	85	250	49	160	4×18	13
100	100	260	56	180	8×18	14	100	260	56	180	8×18	14
125	110	280	64	210	8×18	21	110	280	64	210	8×18	21
150	150	310	70	240	8×22	25	150	310	70	240	8×22	25
200	210	380	71	295	8×22	38	210	380	71	295	12×22	38
250	235	395	76	350	12×22	60	235	395	76	355	12×26	60
300	265	425	83	400	12×22	76	265	425	83	410	12×26	76
350	300	480	92	460	16×22	109	300	480	92	470	16×26	109
400	355	535	102	515	16×26	130	355	535	102	525	16×30	130
450	380	570	114	565	20×26	135	380	570	114	585	20×30	135
500	395	590	127	620	20×26	206	395	590	127	650	20×33	206
600	450	675	154	725	20×30	312	450	675	154	770	20×39	312
700	520	770	165	840	24×30	369	520	770	165	840	24×39	369
800	590	840	190	950	24×33	570	590	840	190	950	24×39	570
900	660	915	203	1050	28×33	750	660	915	203	1050	28×39	750
1000	730	1050	216	1160	28×33	930	730	1050	216	1170	28×45	930
1200	870	1190	254	1380	32×39	1183	870	1190	254	1390	32×52	1183
1400	1015	1350	279	1590	32×45	1415

DN	PN25						PN40
	Dimensions, mm					Weight with gearbox, kg	Dimensions, mm					Weight with gearbox, kg
	A	B	L	D1	n*d	Weight with gearbox, kg	A	B	L	D1	n*d	Weight with gearbox, kg
50	70	235	43	125	4×18	11	80	250	43	125	4×18	12
65	75	250	46	145	8×18	13	85	265	46	145	8×18	14
80	85	250	49	160	8×18	14	95	265	64	160	8×18	15
100	100	260	56	190	8×22	16	115	275	64	190	8×22	17
125	110	280	64	220	8×26	22	125	295	70	220	8×26	25
150	150	310	70	250	8×26	32	165	330	76	250	8×26	36
200	210	380	71	310	8×26	48	225	395	89	320	12×30	50
250	235	395	76	370	8×30	68	250	410	114	385	12×33	79
300	265	425	83	430	12×30	98	285	450	114	450	16×33	128
350	300	480	92	490	12×33	112	330	510	127	510	16×33	233
400	355	535	102	550	12×33	145	390	570	140	585	12×39	272
450	380	570	114	600	16×33	198	415	595	152	610	16×39	307
500	395	590	127	660	16×39	287	430	625	152	670	16×45	378
600	450	675	154	770	16×39	405	485	710	178	795	16×52	465
700	520	770	165	875	20×45	461	535	810	229	900	20×52	679
800	590	840	190	990	20×45	712	630	890	241	1030	20×56	817
900	660	915	203	1090	24×52	832
1000	730	1050	216	1210	24×56	1270
1200	870	1190	254	1420	28×56	1464

DN	PN63						PN100
	Dimensions, mm					Weight with gearbox, kg	Dimensions, mm					Weight with gearbox, kg
	A	B	L	D1	n*d	Weight with gearbox, kg	A	B	L	D1	n*d	Weight with gearbox, kg
50	80	250	43	135	4×22	17
65	85	265	46	160	8×22	19
80	95	265	64	170	8×22	20
100	115	275	64	200	8×26	23	115	275	64	210	8×30	26
125	125	295	78	240	8×30	34	125	295	78	250	8×33	38
150	165	330	78	280	8×33	49	165	330	78	290	12×33	56
200	225	395	102	345	8×33	62	225	395	102	360	8×39	96
250	250	410	117	400	8×39	115	250	410	117	430	8×39	130
300	285	450	140	460	12×39	207	285	450	140	500	12×45	227
350	330	510	155	525	12×39	259	330	510	155	560	12×52	290
400	390	570	178	585	12×45	326	390	570	178	620	12×52	367
500	430	625	216	705	16×52	429
600	485	710	232	820	16×56	684

Flange type connection

Basic overall and connection dimensions of flanged butterfly valves PA 900. Image

DN	PN10						PN16
	Dimensions, mm					Weight with gearbox, kg	Dimensions, mm					Weight with gearbox, kg
	A	B	L	D1	n*d	Weight with gearbox, kg	A	B	L	D1	n*d	Weight with gearbox, kg
50	70	235	108	125	4×18	16	70	235	108	125	4×18	16
65	75	250	112	145	4×18	17	75	250	112	145	4×18	17
80	85	250	114	160	4×18	19	85	250	114	160	4×18	19
100	100	260	127	180	8×18	21	100	260	127	180	8×18	21
125	110	280	140	210	8×18	30	110	280	140	210	8×18	30
150	150	310	140	240	8×22	37	150	310	140	240	8×22	37
200	210	380	152	295	8×22	55	210	380	152	295	12×22	55
250	235	395	165	350	12×22	75	235	395	165	355	12×26	75
300	265	425	178	400	12×22	104	265	425	178	410	12×26	104
350	300	480	190	460	16×22	154	300	480	190	470	16×26	158
400	355	535	216	515	16×26	185	355	535	216	525	16×30	185
450	380	570	222	565	20×26	231	380	570	222	585	20×30	241
500	395	590	229	620	20×26	304	395	590	229	650	20×33	304
600	450	675	267	725	20×30	490	450	675	267	770	20×39	492
700	520	770	292	840	24×30	706	520	770	292	840	24×39	706
800	590	840	318	950	24×33	712	590	840	318	950	24×39	712
900	660	915	330	1050	28×33	950	660	915	330	1050	28×39	980
1000	730	1050	410	1160	28×33	1170	730	1050	410	1170	28×45	1300
1200	870	1190	470	1380	32×39	2030	870	1190	470	1390	32×52	2115
1400	1015	1350	530	1590	32×45	2674	1015	1350	530	1590	32×52	2795
1600	1100	1430	600	1820	36×52	3410	1100	1430	600	1820	36×56	3560
1800	1250	1590	670	2020	40×52	4140
2000	1370	1720	760	2230	44×52	5980

DN	PN25						PN40
	Dimensions, mm					Weight with gearbox, kg	Dimensions, mm					Weight with gearbox, kg
	A	B	L	D1	n*d	Weight with gearbox, kg	A	B	L	D1	n*d	Weight with gearbox, kg
50	70	235	108	125	4×18	17	80	250	150	125	4×18	17
65	75	250	112	145	8×18	18	85	265	170	145	8×18	19
80	85	250	114	160	8×18	20	95	265	180	160	8×18	22
100	100	260	127	190	8×22	25	115	275	190	190	8×22	28
125	110	280	140	220	8×26	32	125	295	200	220	8×26	44
150	150	310	140	250	8×26	42	165	330	210	250	8×26	65
200	210	380	152	310	8×26	67	225	395	230	320	12×30	76
250	235	395	165	370	8×30	82	250	410	250	385	12×33	120
300	265	425	178	430	12×30	139	285	450	270	450	16×33	165
350	300	480	190	490	12×33	172	330	510	290	510	16×33	260
400	355	535	216	550	12×33	229	390	570	310	585	12×39	330
450	380	570	222	600	16×33	312	415	595	330	610	16×39	370
500	395	590	229	660	16×39	380	430	625	350	670	16×45	450
600	450	675	267	770	16×39	571	485	710	390	795	16×52	660
700	520	770	292	875	20×45	808	535	810	430	900	20×52	1096
800	590	840	318	990	20×45	1287	630	890	470	1030	20×56	1500
900	660	915	330	1090	24×52	1520
1000	730	1050	410	1210	24×56	1860
1200	870	1190	470	1420	28×56	2510
1400	1015	1350	530	1640	32×62	3190

DN	PN63						PN100
	Dimensions, mm					Weight with gearbox, kg	Dimensions, mm					Weight with gearbox, kg
	A	B	L	D1	n*d	Weight with gearbox, kg	A	B	L	D1	n*d	Weight with gearbox, kg
50	80	250	150	135	4×22	23
65	85	265	170	160	8×22	25
80	95	265	180	170	8×22	27
100	115	275	190	200	8×26	30	115	275	190	210	8×30	35
125	125	295	200	240	8×30	50	125	295	200	250	8×33	58
150	165	330	210	280	8×33	72	165	330	210	290	12×33	84
200	225	395	230	345	8×33	87	225	395	230	360	8×39	125
250	250	410	250	400	8×39	130	250	410	250	430	8×39	153
300	285	450	270	460	12×39	250	285	450	270	500	12×45	290
350	330	510	290	525	12×39	290	330	510	290	560	12×52	330
400	390	570	310	585	12×45	390	390	570	310	620	12×52	445
500	430	625	350	705	16×52	510
600	485	710	390	820	16×56	850

Welded connection

Basic overall and connection dimensions of welded butterfly valves PA 900. Image

DN	PN 6-25							PN 40-100
	Dimensions, mm						Weight with gearbox, kg	Dimensions, mm						Weight with gearbox, kg
	A	B	L	T	d1	D	Weight with gearbox, kg	A	B	L	T	d1	D	Weight with gearbox, kg
80	98	215	180	6	85	92	30	98	215	180	6	85	92	30
100	112	230	190	6	105	114	37	112	230	190	6	105	114	37
125	125	246	200	6	130	138	44	125	246	200	6	130	138	44
150	155	297	210	6	152	159	51	165	315	210	6	152	159	58
200	200	351	230	9	207	219	62	219	370	230	9	207	219	78
250	231	384	250	9	258	274	84	261	422	250	9	258	274	113
300	261	415	270	9	313	325	115	289	490	270	9	313	325	165
350	298	470	290	9	365	377	153	320	528	290	9	365	377	225
400	331	531	310	9	414	426	187	357	568	310	9	414	426	327
450	369	564	330	9	466	478	292	385	626	330	9	466	480	375
500	404	596	350	9	517	530	324	431	670	350	9	517	530	464
600	473	676	390	9	614	630	436	492	737	390	9	614	630	693
700	538	749	430	14	702	720	668
800	615	829	470	14	802	820	889,5
900	628	852	510	14	902	920	1360
1000	730	1013	550	15	1000	1020	1896
1200	850	1137	630	15	1200	1220	2615
1400	980	1348	710	15	1400	1420	3525
1600	1155	1517	790	18	1600	1620	5496

Top flange's dimensions and torque for choosing actuator

DN	PN10, 16							PN25						PN40
	Top flange acc. to ISO	Dimensions, mm				Torque, H*m		Top flange acc. to ISO	Dimensions, mm				Torque H*m	Top flange acc. to ISO	Dimensions, mm				Torque H*m
	Top flange acc. to ISO	s	b1	H	t	PN10	PN16	Top flange acc. to ISO	s	b1	H	t	Torque H*m	Top flange acc. to ISO	s	b1	H	t	Torque H*m
50	F07	14	6×1	50	16	50	50	F07	14	6×1	50	16	70	F07	14	6×1	50	16	100
80	F07	16	6×1	50	18	65	80	F07	16	6×1	50	18	108	F07	16	6×1	50	18	225
100	F07	18	6×1	50	22	99	125	F07	18	6×1	50	22	171	F07	18	6×1	50	20	315
125	F10	22	8×1	60	24	156	180	F10	22	8×1	60	24	278	F10	26	8×1	60	28	480
150	F10	26	8×1	60	29	239	297	F10	26	8×1	60	29	432	F12	28	10×1	65	31	750
200	F12	28	10×1	65	31	467	585	F12	28	10×1	65	31	752	F12	32	10×1	65	35	1305
250	F12	32	10×1	65	35	753	952	F12	32	10×1	65	35	1242	F14	38	12×1	70	41	2100
300	F14	38	12×1	70	41	1076	1366	F14	38	12×1	70	41	1809	F14	42	12×1	70	45	3045
350	F14	40	12×1	70	43	1479	1895	F14	40	12×1	70	43	2532	F16	45	12×2	90	51	4350
400	F16	45	12×2	90	51	2330	2977	F16	45	12×2	90	51	4355	F16	50	12×2	90	56	7650
450	F16	50	12×2	90	58	2856	3678	F16	50	12×2	90	58	5379	F25	55	16×2	100	63	9300
500	F25	55	16×2	100	63	3708	4764	F25	55	16×2	100	63	7302	F25	65	16×2	100	73	12600
600	F25	65	16×2	100	73	5620	7588	F25	65	16×2	100	73	11216	F25	75	18×2	110	85	19800
700	F25	75	18×2	110	85	7660	10770	F25	75	18×2	110	85	16463	F30	85	22×2	120	95	29700
800	F30	85	22×2	120	97	10695	15100	F30	85	22×2	120	97	23105	F35	95	25×2	140	107	43650
900	F35	95	25×2	140	107	14364	20370	F35	95	25×2	140	107	31220	F35	105	25×2	140	119	58500
1000	F35	105	25×2	140	117	18729	26680	F35	105	25×2	140	117	40940	F40	125	28×2	160	141	76500
1200	F40	125	28×2	160	139	33180	46700	F40	125	28×2	160	139	65730	F48	135	32×2	180	153	125250
1400	F48	145	32×2	180	163	49660	70920	F48	145	32×2	180	163	100830
1600	F48	165	32×2	190	185	69750	100050

The data is approximate, for correct selection of electrical and pneumatic actuators it is recommended to consult with the representatives of PromArm company. Stem dimensions and shape are clarified upon request. For DN500 and higher, installation of multiturn actuators through worm gearbox is possible.

Specifications

Flow capacity of valves Kv, m³/h

DN	50	65	80	100	125	150	200	250	300	350	400	450
Kv	39	103	150	280	380	750	1390	2400	3780	5590	8000	9620
DN	500	600	700	800	900	1000	1200	1400	1600	1800	2000
Kv	13780	18910	26960	35210	43250	57240	81480	125631	196432	223785	281540

Reliability parameters of butterfly valves

DN	40-100	125,150	200-300	350,400	450-600	700-900	1000-2000
Mean life, cycles, not less than	5300	4300	3900	3300	2300	1900	1800
Warranty life, cycles, not less than	2000	1700	1600	1400	1000	800	650

Average life and warranty life of the sealing materials identified when testing valves with water according to GOST 2874-82

When operating valves for working mediums other than water, the reliability parameters are determined by the specific mediums, depending on its parameters.

Warranty

The warranty period is 18 months from the date of putting into operation, but not more than 24 months from the date of sale under condition of observance by the consumer of rules of transportation, installation and operation.

Conservation period - 3 years.

Average service life of body parts is not less than 30 years.

Average life removable parts and components – at least 5 years.

Sealing diagram in butterfly valves with triple offset

This figure shows the design of valves with triple offset: the disk axis of rotation and the seat axis in the valve create offset "a"; the disk axis of rotation is offset from the pipeline axis - this is offset "b"; the third offset "c" is formed due to the conical shape of the sealing surface. This design reduces friction in the points of contact between the disk and the seat, which increases reliability and durability of these valves, reduces the torque to control the valve.

Seat types


Metal-on-metal seat - stack seat of graphite and stainless steel rings	Metal-on-metal seat is all-metal	PTFE seat

By default, valves series PA900 have one-sided tightness, i.e. the direction of the working medium must be unidirectional, in accordance with the arrow on the body. It is not allowed to use such valves to block the flow of the working medium in the opposite direction, this can lead to valve breakage. Although in exceptional cases, after agreement with the manufacturer, it is possible to use these valves for the return flow of the working medium with a pressure less than the nominal pressure. Upon request, it is possible to manufacture bidirectional valves series PA900 for any flow direction of the working medium.

This is achieved by using stronger parts of the valve design, such as the stem, bearings, gearbox, etc. Valves series PA900 with double-sided tightness have a seat designation = 8.

For example, PA928.500.16-02F is a "rotary disk flanged valve with triple offset (body – steel WCB, disk – steel WCB, seat – stainless steel + graphite, direction of working medium - bidirectional) with gearbox".

Tripple offset butterfly valves

Description

Design

Classifier

The main overall and mounting dimensions

Wafer type connection with smooth lugs

Flange type connection

Welded connection

Top flange's dimensions and torque for choosing actuator

Specifications

Flow capacity of valves Kv, m3/h

Reliability parameters of butterfly valves

Warranty

Sealing diagram in butterfly valves with triple offset

Seat types

Flow capacity of valves Kv, m³/h