Control systems Pneumatic actuators
4
Valve maximum differential pressure
TN2277SE
DN125
DN150
DN200 DN250 DN300 reduced
DN300 full
Flow
Metal seated (T, W) Class IV
7.8
7 4.8 4.2 2.2
1.9
Metal seated (T, W) Class V**
3,0 2,2 0,8 0,3
Unbalanced
Under
Soft seated (G, K) Class VI
10,9 10,0 7,3 6,7
4,1
3,7 1,4 1,3
Soft seated (P) Class VI
10,4 9,6 6,9 6,3
3,8
3,4 1,3 1,1
Balanced
All seated (T, W, P, K, G) Class IV
103,4 96,2 71,6 64,8 32,5 29,3 11,8 10,4
Unbalanced Over All seated (T, W, P, K, G) Class IV, V, VI
29,8 29,0 19,6
19 10,8 10,5 3,9 3,8
Flow over : on/off application only with unbalanced trim only. For flow over maximum differential pressure, 6bar g air supply is considered for others air pressure please consult Spirax Sarco. TN2277SR with 6 bar air supply* Valve maximum differential pressure DN125 DN150 DN200 DN250 DN300 reduced
DN300 full
4.2 55
Flow
Metal seated (T, W) Class IV
24,7 23,8 16,1 15,5 8,6
8,3 2,6 2,5
Metal seated (T, W) Class V**
19,9 19,0 12,1 11,6 5,6
5,3 0,7 0,9
Unbalanced
Under
Soft seated (G, K) Class VI
27,7 26,9 18,6 18,0 10,4 10,1 3,8 3,7
Soft seated (P) Class VI
27,2 26,4 18,2 17,6 10,1
9,8 3,6 3,5
Balanced
All seated (T, W, P, K, G) Class IV
103,4 96,2 71,6 64,8 32,5 29,3 11,8 10,4
Unbalanced Over All seated (T, W, P, K, G) Class IV, V, VI
11,8 10,9 7,7 7,2
4,3
3,9 1,5 1,4
*For other air supply pressures please consult Spirax Sarco. Flow over are for on/off application only and unbalanced trim only. ** Class V has an additional cost impact on the valve. Please contatct Spirax Sarco for details.
Note: The differential pressures stated are at 100% of actuator thrust. It is recommended that valve assemblies are not selected to operate at the absolute maximum differential pressure, especially for steam applications where the downstream pressure can operate in vacuum. Please contact Spirax Sarco for further information.
TI-P327-01 CTLS Issue 5
Page 5 of 7
TN2000 Series Pneumatic Piston Actuators for DN125 to DN300 SPIRA-TROL Series Control Valves
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