261-02017
Details
Details
261-02017 1/2 in. Powermite MT NPT 2-Way Normally Closed Globe Valve with SSC161.05U Electromotoric Non-Spring Return Actuator, 0-10V, 24 VAC/DC
Holds its last position on power loss.
Runs on 24 VAC or 24 VDC.
Self-calibrates its stroke at every power-up.
Takes a 0-10V control signal only; no 4-20 mA input.
Mounts upright or tilted, above horizontal only.
Handles water, glycol solutions up to 50% or low-pressure steam under 15 psi, at 35 to 250 deg F.
Limits modulating differential to 50 psi for liquids and 15 psi for steam.
Key Features
- Cv: 0.63
- Close-off: 95 psi
- Flow characteristic: modified equal percentage
- Trim: stainless steel
- Stroke: 7/32 in.
- Feedback: 0 to 10 VDC
Product Specifications
| Manufacturer | Siemens |
|---|---|
| Model | 26102017 (261-02017) |
| Product | Powermite MT Series 2-way globe valve and actuator assembly |
| Valve body part number | 599-02017 |
| Actuator | SSC161.05U Electromotoric Non-Spring Return Actuator, 0-10V, 24 VAC/DC |
| Fail action | Non-spring return; holds last position on power failure |
| Valve series | Powermite MT Series terminal unit valve |
| Line size | 1/2 in (15 mm) |
| Cv (Kvs) | 0.63 (0.54) |
| Action | Normally closed (NC) |
| Flow characteristic | Modified equal percentage |
| Trim | Stainless steel |
| Body material | C37700 forged brass |
| Packing | EPDM O-rings |
| End connections | internal thread NPT x internal thread NPT |
| Stem travel (stroke) | 7/32 in (5.5 mm) |
| Valve spring range (pneumatic use) | 10 to 15 psi (69 to 102 kPa) |
| Controlled medium | Water, low pressure steam (<15 psi), water-glycol solutions to 50% |
| Medium temperature | 35 deg F to 250 deg F (2 deg C to 120 deg C) |
| Maximum recommended differential pressure, modulating, liquid | 50 psi (345 kPa) |
| Maximum recommended differential pressure, modulating, steam | 15 psi (103 kPa) |
| Pressure-temperature rating (ANSI Class 250) | -20 to 150 deg F (-30 to 66 deg C): 400 psig (2758 kPa); 200 deg F (93 deg C): 385 psig (2655 kPa); 250 deg F (121 deg C): 365 psig (2586 kPa); 300 deg F (149 deg C): 335 psig (2300 kPa); 350 deg F (177 deg C): 300 psig (2068 kPa) |
| Body style | Globe |
| Valve body rating | ANSI Class 250 |
| Stem | Stainless steel ASTM A582 Type 303 |
| Seat style | Metal-to-metal |
| Bonnet | Direct coupled universal bonnet |
| Rangeability | Cv <1: >50:1; Cv >1: >100:1 |
| Close-off ratings basis | According to ANSI/FCI 70-2 |
| Leakage rate | ANSI Leakage Class IV (0.01% of Cv) |
| Mounting location | NEMA 1 (interior only) |
| Installation | Flow follows the direction of the arrow on the valve body; best performance with actuator above the valve body; any position between vertical and horizontal; not recommended below horizontal or upside down; allow service space per actuator service envelope |
| Service | Replace the valve if inoperable |
| Canadian Registration Number | 0C24303.5 |
| Valve dimension A (body centerline to NPT port end) | 1-3/8 in (35 mm) |
| Valve dimension B (body bottom to body top) | 2-1/4 in (57 mm) |
| Valve dimension C (pipe centerline to body top) | 1-5/16 in (33 mm) |
| Valve weight | 0.96 lb (0.44 kg) |
| Close-off pressure, this assembly | 95 psi (655 kPa) |
| Actuator type | Electromotoric actuator for Powermite MT Series 2-way and 3-way globe valves |
| Actuator operating voltage | AC 24 V (+/-15%) or DC 24 V (+/-20%) |
| Actuator power consumption | Normal operation 3.5 VA (AC); 1.5 W (DC). Peak (ultra cap recharge): N/A |
| Control signal | Modulating DC 0...10 V to Y; valve opens/closes in proportion; at DC 0 V stem retracted, NC valve fully closed, NO valve fully open; actuator characteristic linear |
| Position feedback | DC 0...10 V proportional to stroke of the actuator stem; max output current 1 mA; max output voltage '-'; resolution 1:100 |
| Actuator running time | 27.5 s +/-25% for 5.5 mm (5 s/mm +/-25%) |
| Actuator fail action | Fail-in-place / NSR: 'When no power is supplied, the SSC161.05U actuator maintains its current position' |
| Spring return / fail-safe time | Not applicable (no fail-safe) |
| Actuator weight | 9.7 ounces (276 g) |
| Input impedance | 100 kOhm |
| Self-calibration | On power-up: fully retracted -> fully extended -> setpoint; 'Never intervene manually during self-calibration'; correct calibration only with valve stroke > 0.05 in (1.2 mm); retries after 10 s; 'After three failed calibration attempts, the actuator stem remains in the extended position and the valves are open' |
| Actuator manual override | 3 mm Allen wrench; open cover, press and hold button (a) at least 3 s (actuator then ignores the control signal), turn wrench clockwise = stem down, counter-clockwise = stem up; position retained; press button 3 s again to exit, actuator self-calibrates; without power no button press needed |
| Wiring terminals | G system potential (AC/DC 24 V); G0 system neutral; Y control signal DC 0...10 V; U feedback signal; M measurement reference |
| Parallel operation | Max. 10 modulating actuators, provided the controller output is sufficient |
| Positioning force | 67 lb (300 N) |
| Actuator stroke | 0.05 to 0.25 in (1.2...6.5 mm); valve stroke 7/32 in (5.5 mm) |
| Actuator frequency | 50/60 Hz |
| Primary fuse or breaker | External, 2 A quick blow (2AF in connection diagrams) |
| Actuator enclosure | Housing protection degree NEMA 2 / IP20 (EN 60529); protection class III (EN 60730); pollution degree 2; overvoltage category I |
| Actuator ambient temperature | Operation 34 to 122 deg F (1...50 deg C); transport and storage -13 to 158 deg F (-25...70 deg C) |
| Ambient humidity / altitude | Operation 5...95% r.h. non condensing; transport <95% r.h. non condensing; storage 5...95% r.h. non condensing; min. 700 hPa (max. 3,000 m above sea level) in operation |
| Actuator media temperature | Permissible temperature of medium in the connected valve 34 to 248 deg F (1...120 deg C); MT valve bodies rated 35 to 250 deg F (2 to 120 deg C) |
| Actuator approvals | UL per UL60730-1, UL60730-2-14; cUL per CSA-CAN E60730-1, E730-2-14; FCC CFR 47 Part 15 Class B; ICES-003 CAN ICES-3 (B)/NMB-3(B); CE; RCM; UKCA |
| Electrical connection / wire size | Permissible length for signal lines 65 ft (20 m); wire cross section 18...20 AWG (0.5...0.75 mm2); cable diameter <0.22 in (5.5 mm); wired to a removable terminal block under the cover |
| Actuator housing | Cover/base PC + ABS, color 2003 Ti-Gray; connecting nut brass |
| Mounting / connection to valve | Direct mounting with brass 3/4 in coupling nut, hand-tightened, no tools; 'Do not use pipe wrenches, pliers or similar tools'; 'Avoid lateral pressure or (cable) tension on the mounted actuator' |
| Actuator mounting position | Orientation: above horizontal |
| Stem direction vs valve | Stem extends: NO valve closes, NC valve opens; stem retracts: NO valve opens, NC valve closes |
| Maintenance / repair | No maintenance required; cannot be repaired - replace complete unit |