Type 27531

CRYOGENIC

Type 27531 - Pneumatic Actuator - Control Valve

Pneumatic Actuators for Control Valves

Actuator - air to open,
spring to close
Air supply - maximum 6,0bar ü Body - stainless steel (1.4571) electropolished

Ambient temperature limit:
-20°C / -4°F (253K) bis +80°C / 176°F (353K)

Overview - required actuator sizes for differential pressures

Differential pressure in bar

1,0
-
2,0

2,1
-
4,0

4,1
-
6,0

6,1
-
8,0

8,1
-
10,0

10,1
-
12,0

12,1
-
15,0

15,1
-
17,0

17,1
-
19,0

19,1
-
22,0

22,1
-
25,0

25,1
-
29,0

29,1
-
35,0

35,1
-
39,0

39,1
-
42,0

42,1
-
50,0

a.A.

100

o.r. - on request

150

o.r. - on request

The differential pressures are based on the flow direction of the valve. Differential pressures against the flow direction have to be requested separately.

Code in Table		Part No. Actuator
	A	27531.15A6.3SPO
	B	27531.35B6.6GPO
	C	27531.60A6.6GPO
	D	27531.60C6.7GPO
	E	27531.75B6.3DPO
	F	27531.75B6.5DPO
	G	27531.75B6.7DPO

Type 27531 - Pneumatic Actuator - Control Valve

Materials		DIN EN	ASTM
1	Body	1.4571	A 240 Grade 316Ti
2	Body	1.4571	A 240 Grade 316Ti
3	Diaphragm	NBR
4	Springs	Cr.Si-Leg.*
5	Actuator stem	1.4571	A 276 Grade 316Ti
6	Coupling	1.4571	A 240 Grade 316Ti
	* Coating:	material is corrosion resistant (Microcor Spezial) corrosion protection class C5-M

Type 27531	Technical Data
Part No. Actuator					27531
		.15A6.3SPO	.35B6.6GPO	.60A6.6GPO	.60C6.7GPO	.75B6.3DPO	.75B6.5DPO	.75B6.7DPO
Diameter Actuator	M	162	210	310	310	430	430	430
Height	H	256	276	309	352	353	353	353
Height	H1	116	136	166	186	234	234	234
Thread	G	G1/8'' *	-	-	-	-	-	-
Thread	G1	-	1/4'' NPT	1/4'' NPT	1/4'' NPT	3/8'' NPT	3/8'' NPT	3/8'' NPT
Diaphragm area	cm²	120	280	530	530	1000	1000	1000
Spring range	bar	0.9 - 2.0	0.8 - 3.0	0.8 - 2.8	0.7 - 3.0	0.7 - 2.1	1.2 - 3.4	1.6 - 4.7
Minimum air pressure	bar	2.2	3.2	3.0	3.2	2.3	3.6	4.9
Regulating lift	mm	20	35	40	60	60	60	60
Weight	ca. kg	3.0	5.0	12.5	14.0	37.0	39.0	41.0

Dimensions in mm; * with Ermeto fitting L8

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