Flo-Tork Series M Valve Actuators - Torque Output for Closed System Actuators

The unique design of the Series M spring return actuators, single cylinder models MS-1-1665 and smaller, can be readily sealed to prevent the entry of external contamination during normal operation by simply plugging the cylinder vent port and the housing vent and drain connections. When the spring cylinder vent port is plugged, a small pressure buildup will occur as the pneumatic pressure compresses the spring. The torque output for the totally sealed spring cylinder units is shown below for the 80# & 100# springs with 80 or 100 psig air supply. Please consult Flo-Tork for output torque values for spring sizes and air pressures not shown.

Torque (lb-in)
Model	80 PSIG			100 PSIG			Spring
Model	0°	MIN	90°	0°	MIN	90°	0°	MIN	90°
MS-1-527-80	4200	1500	1700	5800	2450	3000	2100	1700	3360
MS-1-527-100	3650	850	850	5250	1950	2200	2600	2100	4400
MS-1-727-80	7900	2950	3200	10850	4560	5650	3950	3250	6700
MS-1-727-100	6900	1650	1650	9850	3750	4100	4900	4050	8250
MS-1-737-80	10600	3750	3900	14600	6150	7250	5300	4550	9450
MS-1-737-100	9300	2100	2100	13300	5050	5450	6650	5550	11250
MS-1-837-80	14250	4950	5200	19550	8150	9650	7100	6050	12700
MS-1-837-100	12450	2800	2800	17800	6700	7300	8900	7350	15050
MS-1-937-80	17850	6550	6600	24550	10350	12200	8900	7600	15850
MS-1-937-100	15600	3550	3550	22300	8450	9200	11150	9300	18900
MS-1-1037-80	23500	8050	8700	32300	13100	16100	11700	9550	20800
MS-1-1037-100	20550	4700	4700	29350	10700	12050	14650	11700	24850
MS-1-1047-80	27850	9550	9750	38350	15950	18550	13900	12050	25300
MS-1-1047-100	24400	4900	4900	34850	12850	13700	17400	14700	30150
MS-1-1247-80	40100	13650	13900	55150	22850	26500	20050	17400	36600
MS-1-1247-100	35100	7250	7250	50150	18600	19900	25050	21150	43200
MS-1-1447-80	54650	18950	19450	75150	31400	36650	27300	23600	49350
MS-1-1447-100	47850	9650	9650	68350	25250	26850	34150	28900	59100
MS-1-1465-80	74800	24050	24050	102850	41700	47550	37350	32900	70050
MS-1-1465-100	65450	10350	10350	93500	32900	33850	46700	40300	83750
MS-1-1665-80	98100	32050	32050	134750	54850	62800	48400	42600	90850
MS-1-1665-100	86000	14350	14350	122650	43550	45050	60500	52200	108600

Note: The torque chart values are minimum output based on ideal conditions. The actual torque output may vary based on adjustor stop screw position, alignment, service time between lubricaiton, & other influencing factors.

Special Application Data Sheet

Totally Sealed Spring Cylinder Units