Pros, Join Our TradeMaster Program!
Product Overview:
One-Pipe Steam Thermostatic Radiator Valves - Allow automatic temperature control in one-pipe steam or hot water systems for free standing radiators, convectors and other heating units with standard capacity requirements. Provide comfort and energy savings.

Product Features:
  • Continually monitors and adjusts room temperature for consistent comfort and relief from under-heating and overheating.
  • Adjustable balancing cartridge design made from resilient material (EPDM), ensures tight shut-off on steam and hot water systems.
  • Nickel plated brass casted body.
  • Replaceable cartridge for easy service with service tool.
  • Controls include valve body, steam air vent.
  • Used with T100 set point and capillary actuators.
  • No electrical connection required for non-electric actuators.
  • Normally open without control mounted.
Product Specifications:
  • Description: 3/4" Horizontal Straight Valve For Standard Capacity Radiator
  • Application Type : Especially suited for baseboards and straight runs where manual valves were not originally installed.
  • Pipe Size (inch): 3/4 in.
  • Pipe Size (DN): DN20
  • Body Pattern: Straight
  • Capacity: standard
  • Capacity (Cv): 2.7 Cv
  • Capacity (Btu/hr-steam): 63,800 Btu/hr
  • Connection Type: Threaded
  • Pressure Ratings (Hot Water (psi)): 150 psi maximum
  • Pressure Ratings (Hot Water (kPa)): 1034 kPa maximum
  • Pressure Ratings (Steam (psi)): 15 psi maximum
  • Pressure Ratings (Steam (kPa)): 103 kPa
  • Differential Pressure Ratings (psi): 17 psi maximum
  • Differential Pressure Ratings (psi): With T100 or T200: 15 psi
  • Differential Pressure Ratings (psi): With MV100: 36 psi
  • Differential Pressure Ratings (psi): For low noise: 3 psi
  • Temperature Ratings (F): 248 F Maximum
  • Temperature Ratings (C): 120 C Maximum
  • Dimensions (in.): 4 1/16 in x 4 3/16 in.
  • Materials (Body): Nickel Plated Bronze
  • Cartridge Change Tool: Yes - Use VA8200A001
  • Used With: T100
  • Inlet Connection Size (in.): 3/4 in.
  • Inlet Connection Type: NPT
  • Outlet Connection Type: Threaded
Read more
Hot Water
Body Pattern:
Connection Type:
Normally Open
Temperature Range (F):
248°F Max
Flow Capacity (Cv):
Capacity (BTU):
63800 Btu/hr (steam)
Inlet Size:
Inlet Type:
Outlet Type:
Threaded (IPS)
Nickel Plated Bronze
Max Pressure (PSI):
15 psi (Steam)
150 PSI (Hot Water)
With MV100: 36 psi
With T100 or T200: 15 psi
For low noise: 3 psi
Special Hours
Special Hours
Mon – Fri, 7AM – 6PM

Pickup will be closed:
2PM on Thursday, December 3 and reopen at 7AM on Friday, December 4.
Closed Now: Phone Hours
Monday – Thursday
8am–7:45pm ET
9am–7:45pm ET

1 Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.