24V Thermostatic Actuator (Zone Valve) for SSM & BSM Manifolds, 4-wire

Brand: Rifeng

Mfr Part#: SSM201

Availability: In Stock
Usually ships: Today, if ordered by 3pm
Qty Price
$42.95 / each
x10 $399.50 & Free Shipping
(10 x $39.95 / each)
  • Description
  • Literature
  • Reviews
  • FAQs (2)

Technical Specifications:

  • Type of Protection: IP 54;
  • Protection Class: III;
  • Ambient Temperature: 32°F - 140°F (0°C - 60°C);
  • Storage Temperature: -13°F - 149°F (-25°C - 65°C);
  • Operating Voltage: 24 V AC/DC, 0-60 Hz, -10% + 20%;
  • Operating Capacity: 1.8 W;
  • Making Current: max. 250 mA for max. 2 min.;
  • Wire Length: 40";
  • End Switch (Switching Current): 24V AC, 3A (1A).
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What size is the nut on the actuator in MM?
Read 1 answer
It is a metric thread M30 x 1.5.
Answered on 1/2/2018 by PexUniverse Customer Service
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What is the difference between the 2 wire and 4 wire?
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9 of 9 people found this answer helpful.
SSM101 is a 2-wire model. SSM201 is a 4-wire model (with end switch). Purpose of the end switch is to delay start-up of the circulator pump until the actuator is fully open (~3-4 minutes). End switch design prevents pumping against a closed zone valve (actuator) and prevents early wear and tear of the components in the system. Regular SSM101 model does not have this functionality and in most instances will require creating a bypass using Taco 3196 model or similar, so as to bypass the flow of water (between the supply and return manifolds) until the actuator is fully open.
Answered on 9/20/2016 by PexUniverse Customer Service
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