ACCESSORIES VALVES

Pneumatic actuator mechanism for Wafer and Lug Butterfly Valves

Application

Sewerage Isolating Valves

Isolating Valves

Product family

Accessories

The fluid used in pneumatic position indicators can be water, air or any other non-corrosive fluid. Compressed air is generally used at a maximum supply pressure of 8 bar and a temperature ranging from -32°C to +90°C. The air acts on a piston. The movement of this piston causes a threaded rod to move longitudinally.

There are two models : the « PA » type and the « P » type.

"PA" type actuator mechanisms are composed of pre-compressed springs with a single spring safety system. The number of springs on each side can vary from 2 to 6 springs depending on the operating torque requirements. Easy to assemble and replace.

"P" type actuator mechanisms are composed of two concentric springs on each side. The safety system is optional. There is no initial pre-compression, which makes assembling and replacing the springs less straightforward.

There are two possible operating modes for a pneumatic actuator mechanism: single effect (spring return) and double effect, with torques ranging from 15 Nm to 5,000 Nm.

Single effect consists of a single chamber with a piston plus a mechanical spring. Air pressure moves the piston and compresses the spring. In the event of air failure, the spring returns the piston to its original position.

Double effect consists of two chambers. In the event of air failure, the piston remains in its final position.

General dimensions
DE Type	SE Type	A for DE	A for SE	B	C	F	G	H	I	J	K	L	M	Mass DE	Mass SE
DE Type	SE Type	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	kg	kg
PA00	PA00S	152.3	152.3	F05	14	80	30	111.3	84.1	52.2	13.8	10	12.5	1.4	1.62
PA05	PA05S	200.8	200.8	F05-F07	17	80	30	128.3	101.6	61.7	13.8	10	12.5	2.57	2.94
PA10	PA10S	224.4	224.4	F05-F07	17	80	30	132.3	103.6	62.7	13.8	10	12.5	3.08	3.48
PA15	PA15S	264.2	264.2	F05-F07	17	80	30	147.8	119.4	70.5	13.8	10	12.5	4.20	5.04
PA20	PA20S	310	310	F05-F07	17	80	30	156.3	127.5	75.1	21.9	16	12.5	5.61	6.63
PA25	PA25S	356.2	356.2	F07-F10	27	80	30	184.3	153.5	89.2	21.9	16	12.5	9.30	11.3
P30	P30S	349	479	F07-F10	27	80	30	211	177	94	21.8	16	11	9.10	15.9
P40	P40S	444	598.4	F10-F12	36	130	50	272	226	120	41.9	32	20	17.6	36.4
P50	P50S	524	694	F14	36	130	50	313	257.5	135	41.9	32	20	30.7	58.4
PA60	PA60S	672.5	672.5	F16	46	130	50	368	330.5	172	41.9	32	13.5	48.3	63.2
PA70	PA70S	742.5	742.5	F16	46	130	50	428	403	217	41.9	32	10.5	77.9	118.2

DE = double effect - SE = simple effect

Technical design

Features

Selecting the type of pneumatic actuator

The selection of the mechanism type is based on the DN of the butterfly valve, the network pressure, and the type of actuator (single or double effect).

There are two types of actuator mechanisms: "PA" and "P". The difference lies in the type of springs used:

"PA" type: 2 to 6 pre-compressed springs with expansion limiter (new version)
"P" type: 1 or 2 concentric springs (old version)


DN	Double effect			Simple effect
DN	PN6	PN10	PN16	PN6	PN10	PN16
32	PA00	PA00	PA00	PA00S	PA00S	PA05S
50	PA00	PA00	PA00	PA00S	PA00S	PA05S
65	PA00	PA05	PA05	PA05S	PA05S	PA10S
80	PA05	PA05	PA05	PA10S	PA10S	PA15S
100	PA05	PA05	PA10		PA15S	PA20S
125	PA10	PA10	PA15	PA20S	PA20S	PA25S
150	PA15	PA15	PA20	PA25S	PA25S	P30S
200	PA20	PA20	PA25	P30S	P30S	P30S
250	PA25	PA25	P30	P40S	P40S	P40S
300	P30	P30	P30	P40S	P40S	P40S
350	P30	P40	P40	P40S	P40S	P50S (*)
400	P40	P40	P50 (DN400*)	P50S (*	P50S (*	PA60S (*)
450	P50 (DN600*)	P50 (DN500*)	P50 (DN400*)	PA60S (*)	PA60S (*)	PA70S (*)
500		P50 (DN500*)	PA60 (*)	PA70S (*	PA70S (*
600		PA60 (*)	PA70 (*)
700	PA60 (*)	PA70 (*)
800	PA70 (*)

(*) Special assembly - Consult us

PA Type Materials

Item	Description	Material	Quantity
1	Allen screws + cover washers	Stainless steel AISI-304	8
2	Side covers	Aluminium Alloy + Cataphoresis + Polyurethane	2
3	Cover and piston O-rings	NBR	4
4	Piston	Aluminium Alloy + Cataphoresis	2
5	Extruded cylinder	Aluminium Alloy + Cataphoresis + Rilsan 250 µm	1
6	Washer	Polyamide 6	1
7	Safety clip spring	Nickel-coated steel + PTFE	1
8	Position indicator	Polyamide	1
9	Piston guide	POM (1) / PTFE + Bronze (2) / Nylon (3)	4
10	Shaft O-ring	NBR	4
11	Springs assembly	Steel DIN 17-223-C passivated Trivalent Cr	2 to 12
12	Gear	Aluminium + Cataphoresis	1
13	Shaft	Steel + Cataphoresis	1
14	Lever	Steel + Cataphoresis	1
15	End-of-travel adjustment hardware	Inox A2 (5) and AISI-304 / ACERPL (6)	1
16	Connection plate	Polyamide + FV / CF8M	2

1) PA and P40 series (excluding PAW) - (2) P series - (3) P50 and PA70

P Type Materials

Item	Description	Matériel	Quantité
1	Allen screws + cover washers	Stainless steel AISI-304
2	Side covers	Aluminium Alloy + Cataphoresis + Polyurethane	2
3	Cover and piston O-rings	NBR	4
4	Piston	Aluminium Alloy + Cataphoresis	2
5	Extruded cylinder	Aluminium Alloy + Cataphoresis + Rilsan 250 µm	1
6	Washer	Polyamide 6	1
7	Safety Circlips	Nickel-coated Steel + PTFE	1
8	Position Indicator	Polyamide	1
9	Piston guide	PFTE + Bronze	4
10	Shaft O-ring	NBR	4
11	Springs assembly	Steel DIN 17-223-C passivated Trivalent Cr	2-4
12	Gear	Aluminium + Cataphoresis	1
13	Shaft	Acier + Cataphoresis	1
14	External side covers	Aluminium Alloy + Cataphoresis + Polyurethane	2

Simple effect and double effect dimensions

Double effect

DN	Plug	C	X	Reference	A1	B1	C1	H1	Y1	L1	Mass
mm	inch	mm	mm	Reference	mm	mm	mm	mm	mm	mm	kg
25	1"	33	68	PA00	31.9	52.2	129.8	232.5	292.5	152.3	2.9
32	1¼"	33	68	PA00	31.9	52.2	129.8	232.5	292.5	152.3	2.9
40	1½"	33	76	PA00	31.9	52.2	129.8	239.8	295.8	152.3	3.1
50	2"	43	100	PA00	31.9	52.2	129.8	249.8	311.3	152.3	3.8
65	2½"	46	108	PA05	39.9	61.7	128.3	263.3	332.3	200.8	5.2
80	3"	46	124	PA05	39.9	61.7	128.3	269.3	363.3	200.8	5.7
100	4"	52	147	PA05	39.9	61.7	128.3	293.3	399.3	200.8	6.5
125	5"	56	180	PA10	40.9	62.7	132.3	312.3	438.8	224.4	9.2
150	6"	56	206	PA15	48.9	70.5	147.8	340.8	473.8	264.2	11.4
200	8"	60	257	PA20	52.4	75.1	156.3	381.3	551.3	310	16.6
250	10"	68	324	PA25	64.3	89.2	184.3	466.8	676.8	356.3	29.8
300	12"	78	376	P30	83	94	211	519	759	349	38.6
350	14"	78	430	P40	106	120	272	610.5	873.5	444	53
400	16"	102	485	P40	106	120	272	652	960	444	73.5
450	18"	114	536	P50	122.5	135	313	693.5	1033	524	112
500	20"	127	593	P50	122.5	135	313	745.5	1125	524	144
600	24"	154	690	PA60	158.5	172	368	862	1302	672.5	254
700	28"	165	830	PA70	186	217	453	1043	1533	742.5	330

Simple effect

DN	Plug	C	X	Reference	A2	B2	C2	H2	Y2	L2	Mass
mm	inch	mm	mm	Reference	mm	mm	mm	mm	mm	mm	kg
25	1"	33	68	PA00S	31.9	52.2	129.8	232.5	292.5	152.3	3.1
32	1¼"	33	68	PA00S	31.9	52.2	129.8	232.5	292.5	152.3	3.1
40	1½"	33	76	PA00S	31.9	52.2	129.8	239.8	295.8	152.3	3.3
50	2"	43	100	PA00S	31.9	52.2	129.8	249.8	311.3	152.3	4
65	2½"	46	108	PA05S	39.9	61.7	128.3	263.3	332.3	200.8	5.5
80	3"	46	124	PA10S	40.9	62.7	132.3	273.3	367.3	224.4	6.6
100	4"	52	147	PA15S	48.9	70.5	147.8	312.8	418.8	264.2	9
125	5"	56	180	PA20S	52.4	75.1	156.3	336.3	462.8	310	12.7
150	6"	56	206	PA25S	64.3	89.2	184.3	377.3	510.3	356.2	18.5
200	8"	60	257	P30S	83	94	211	436	606	479	27
250	10"	68	324	P40S	106	120	272	554.5	764.5	598.4	57
300	12"	78	376	P40S	106	120	272	580	820	598.4	66
350	14"	78	430	P40S	106	120	272	610.5	873.5	598.4	72
400	16"	102	485	P50S	122.5	135	383	763	1071	694	114
450	18"	114	536	PA60S	158.5	172	438	818.5	1158	672.5	164
500	20"	127	593	PA70S	186	217	498	930.5	1310	742.5	232

Mechanical Performances

Operating torque

DE - Double Effect		SE - Simple Effect
Type	Air 6 bar	Type	Number of springs	Initial springs	Final springs	Air 6 bar initial	Air 6 bar final
Type	Nm	Type	Number of springs	Nm	Nm	Nm	Nm
PA00	25	PA00S	6	16.5	11.1	13.9	8.5
PA05	49.7	PA05S	6	31.4	20.9	28.8	18.3
PA10	71	PA10S	6	45.6	30.8	40.2	25.4
PA15	116.5	PA15S	6	71.5	49	67.5	45
PA20	165.5	PA20S	6	104.7	65.8	99.7	60.8
PA25	290	PA25S	6	181.8	119.4	170.6	108.2
P30	469.2	P30S	4	273.7	179.9	289.3	195.5
P40	1180	P40S	4	766.9	491.6	688.3	413
P50	2067	P50S	4	1206	723.6	1344	861.4
PA60	3458	PA60S	6	2075	1383	2075	1383
PA70	5043	PA70S	6	3539	1769	3273	1504

Operating time

Type DE	Type SE	Mass DE	Mass SE	Operating time in seconds
Type DE	Type SE	kg	kg	Double effect opening	Double effect closing	Simple effect opening	Simple effect closing
PA00	PA00S	1.40	1.62	0.15	0.15	0.2	0.2
PA05	PA05S	2.57	2.94	0.2	0.2	0.25	0.25
PA10	PA10S	3.08	3.48	0.25	0.25	0.3	0.3
PA15	PA15S	4.20	5.04	0.3	0.3	0.4	0.4
PA20	PA20S	5.61	6.63	0.4	0.4	0.5	0.5
PA25	PA25S	9.30	11.3	0.5	0.5	0.8	0.8
P30	P30S	9.10	15.9	0.6	0.6	1.2	1.2
P40	P40S	17.6	36.4	1.2	1.2	2	2
P50	P50S	30.7	58.4	2	2	6	6
PA60	PA60S	48.3	83.2	3	3	6	5
PA70	PA70S	77.9	118.2	4	4	8	6

Volume capacity in liters at atmospheric pressure

Liters at atmospheric pressure
SE - Simple effect		DE - Double effect
Type	Opening	Type	Opening	Closing
PA00S	0.15	PA00	0.15	0.18
PA05S	0.28	PA05	0.28	0.37
PA10S	0.35	PA10	0.35	0.45
PA15S	0.65	PA15	0.65	0.82
PA20S	0.8	PA20	0.8	1.15
PA25S	1.5	PA25	1.5	2.02
P30S	2.05	P30	2.05	1.9
P40S	5.3	P40	5.3	5.3
P50S	10.5	P50	10.5	7
PA60S	19.5	PA60	19.5	20.7
PA70S	31	PA70	31	30