Single/Double acting scotch yoke pneumatic actuator butterfly valve

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Double acting pneumatic actuator

Single/Double acting scotch yoke pneumatic actuator butterfly valve - Scotch yoke design generates large opening and closing torque - Piston multiple guides delivers smooth operation - Precision machined parts ensuring safe operation and long service life - Low air consumption

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Product Detail

Double acting scotch yoke pneumatic actuator Specification：

Comply to UNI EN 15714-3:2009 standard

ISO connection standard：UNI EN ISO 5211。

Auxiliary connectioin：NAMUR,VDI/VDE3845

Control angle：90°(-5°~+3°)。

Torque：Relative to control pressure and type.

Working Condition：

Operation temperature：-20℃~+80℃

Pressure：2-8bar

Operating Medium：Filtered compressed air dry or lubricated.The pressure condensation point in accordance with

(ISO 8573-1:2010, Class 3)has to be ≤ - 20℃ or 10℃under ambient temperature.

The maximum particle size in accordance with (ISO 8573-1:2010, Class 5) should not exceed 40 µm.

Single/Double acting scotch yoke pneumatic actuator butterfly valve Features：

Double acting pneumatic actuator Structure Diagram

1.Corrosion-resistant connectors

All connection bolts are stainless steel with good corrosion resistance

2.Piston ring

The piston guide ring, made of ultra high molecular polymer, has an extremely low coefficient of friction, while the material has high hardness and excellent wear resistance, providing precise guidance and long service life.

3.Body

The cylinder body is processed with high precision and anodized. The thickness of the oxide layer is more than 20μm. It has low friction coefficient and excellent anti-corrosion and wear resistance.

4.Shaft bearing

Prevent direct contact between shaft and cylinder block, ensure the positioning accuracy of drive shaft, reduce friction loss, prevent direct contact between shaft and cylinder block, make the actuator efficient operation.

5.Piston bearing

Ensure the positioning accuracy of the piston, so that the piston can be smooth and smooth operation, prevent shifting.

6. Pin connection

The fork and the drive shaft are connected by pins to ensure that the fork and the drive shaft run synchronously. At the same time, the pins also play a role in preventing the drive shaft from flying out, which is a reliable and safe design.

Torque table （Nm）：

Model Pressure	2.5bar/36psi			3bar/44psi			4bar/58psi			5bar/73psi			5.5bar/80psi			6bar/87psi			7bar/101psi			8bar/116psi
Model Pressure	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°	α=0°	α=45°	α=90°
DA40	13	6	10	15	8	12	20	10	16	25	13	20	28	14	22	30	15	24	35	18	28	40	20	32
DA60	37	19	30	44	23	36	59	30	48	74	38	60	83	42	68	89	45	72	104	53	84	118	60	96
DA70	71	36	58	86	44	70	114	58	93	143	73	116	160	81	130	171	87	140	200	102	163	228	116	186
DA80	115	59	94	138	70	113	184	94	150	230	117	188	258	131	210	276	141	225	322	164	263	368	188	300
DA90	172	87	140	206	105	168	274	140	224	343	175	280	384	196	313	412	210	336	480	245	392	549	280	448
DA100	252	129	206	303	154	247	404	206	329	505	257	411	565	288	461	605	309	494	706	360	576	807	411	658
DA125	412	210	336	494	252	403	659	336	537	823	420	671	922	470	752	988	504	806	1153	588	940	1317	672	1074
DA140	575	293	469	690	352	563	920	469	750	1150	586	938	1288	657	1050	1380	704	1125	1610	821	1313	1840	938	1501
DA160	870	443	709	1044	532	851	1392	709	1135	1740	887	1418	1948	993	1589	2088	1064	1702	2435	1241	1986	2783	1419	2269
DA180	1213	618	989	1456	742	1187	1941	989	1583	2426	1237	1978	2718	1385	2216	2912	1484	2374	3397	1731	2770	3882	1979	3165
DA220	2071	1082	1565	2485	1299	1878	3314	1732	2504	4142	2165	3130	4639	2425	3506	4971	2598	3756	5799	3031	4382	6627	3464	5008
DA260	4256	2224	3216	5107	2669	3859	6810	3559	5146	8512	4449	6432	9534	4983	7204	10215	5339	7719	11917	6228	9005	13619	7118	10292