4″ Steam Jacketed Hydrolet QRB Valve – 90 degree Elbow

The Betts Steam Jacketed Q.R.B. Hydrolet Valve is designed to handle heavy, viscous, temperature sensitive liquids. The quick removable bonnet permits easy dismantling for cleaning and inspection. The valve is available in the three styles shown below in 3” and 4” sizes with flanged or threaded outlets.  The valve is constructed of 316 stainless for compatibility with a wide range of products.  The jacket material is 304 stainless and the two steam connections are ¾” NPT female.

Pressure and Temperature Rating:

  • Max working pressure (MAWP): 35 psi [2.4 bar]
  • Steam Jacket MAWP: 150 psi [10.3 bar]
  • Max temperature (dependent on seal):
  • PTFE, FKM or Non-Asbestos: 400°F [204°C]

Parts List

Product Details

Assembly No.DimensionsFlange-Inlet & OutletOutletWeight
JQ704SSTJ: 10 1/4" [260 mm]
K: 8" [203 mm]
I.D.: 4 3/8" [111 mm]
B.C.: 5 7/8" [149 mm]
Holes: 8-7/16" [11 mm]
Flanged27.3 lb [12.4 kg]
JQ714SSTI: 10 9/16" [268 mm]
K: 8" [203 mm]
I.D.: 4 3/8" [111 mm]
B.C.: 5 7/8" [149 mm]
Holes: 8-7/16" [11 mm]
4" Threaded27.3 lb [12.4 kg]
NOTE: Stainless 316 valves are standard with PTFE disc, gasket & padding (Suffix "T"). For variations and replacement parts see Section 10, Page 5B.

Repair Kits and Accessories


Teflon Accordion Packing

Engineering Bulletins

EB-03-18: Procedure for Pneumatic Leak Test of Hydrolet Valve (Pre-Load Qualification)
EB-09-99: Q.R.B. Hydrolet Clamp Ring Installation and Torque Rating.