4″ Steam Jacketed QRB Hydrolet Valve – Packing Nut Style
The Betts 4” Steam Jacketed QRB Hydrolet is a manually operated loading/unloading stop-valve typically used in conjunction with a primary self-closing stop-valve on DOT407 and 412 cargo tanks.
The Steam Jacketed QRB Hydrolet offers the same features as the standard Hydrolet but with the added advantage of providing a method to circulate heated fluid around the valve for applications where a temperature-sensitive product may solidify in the valve if it cools. The jacket material is 304 stainless steel and the two steam fittings are ¾” NPT female couplings. The large 4” design provides increased flow compared to the smaller 3” valve.
The main valve body is constructed from durable 316 stainless steel, making it ideal for use on transport tanks hauling a variety of products. The valve is available in 90-degree, 45-degree and straight outlet configurations, with either flanged or threaded outlet options.
The Betts Hydrolet is the industry standard with a reputation for performance and reliability, offering unmatched quality and backed by exceptional customer service.
Maximum allowable working pressure (MAWP): 35 psi [2.4 bar]. *
Steam Jacket MAWP: 150 psi [10.3 bar].
Product Details
| Assembly Part Number ** | Description | Inlet Flange | Outlet Configuration | Outlet Angle | Disc Seal Material ** | Weight |
|---|---|---|---|---|---|---|
| JQ704SST | 4” 90° Steam Jacketed QRB Flanged Outlet | 4” TTMA (8 Holes on 5.88” B.C.) [149.2 mm] | Flanged (4" TTMA) | 90° Elbow | PTFE | 27.5 lbs. [12.5 kg] |
| JQ714SST | 4” 90° Steam Jacketed QRB Threaded Outlet | 4” TTMA (8 Holes on 5.88” B.C.) [149.2 mm] | Threaded (4" NPT) | 90° Elbow | PTFE | 27.5 lbs. [12.5 kg] |
| JQ764SST | 4” 45° Steam Jacketed QRB Flanged Outlet | 4” TTMA (8 Holes on 5.88” B.C.) [149.2 mm] | Flanged (4" TTMA) | 45° Elbow | PTFE | 26.0 lbs. [11.8 kg] |
| JQ774SST | 4” 45° Steam Jacketed QRB Threaded Outlet | 4” TTMA (8 Holes on 5.88” B.C.) [149.2 mm] | Threaded (4" NPT) | 45° Elbow | PTFE | 26.0 lbs. [11.8 kg] |
| JQ724SST | 4” Straight Steam Jacketed QRB Flanged Outlet | 4” TTMA (8 Holes on 5.88” B.C.) [149.2 mm] | Flanged (4" TTMA) | Straight | PTFE | 24.2 lbs. [11.0 kg] |
| JQ734SST | 4” Straight Steam Jacketed QRB Threaded Outlet | 4” TTMA (8 Holes on 5.88” B.C.) [149.2 mm] | Threaded (4" NPT) | Straight | PTFE | 24.4 lbs. [11.1 kg] |
| * Values shown are test values and actual values may vary due to service conditions. | ||||||
| ** Last letter of part number designates seal material. | ||||||
| ** Disc Seal Material | Seal Temperature Rating * |
|---|---|
| A = Non- Asbestos | -20°F to +500°F [-29°C to 260°C] |
| T = PTFE | -20°F to +400°F [-29°C to 204°C] |
| V = FKM (Type A) | 0°F to +400°F [-18°C to 204°C] |
| B = Nitrile (Bunna-N) | -40°F to +230°F [-40°C to 110°C] |
Technical Data
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.
EB-05-25: New Tophead O-ring Seal on 3” & 4” Hydrolet Valves
Installation and Maintenance Manual
MM-HY005: Quick Release Bonnet Hydrolet Maintenance Manual
Instructional Videos
No video available at this time.
Dimensions
JQ704 & JQ714 Dims.
JQ764 & JQ774 Dims.
JQ724 & JQ734 Dims.
Repair Kits and Accessories
Prop 65
WARNING: This product can expose you to chemicals including Chromium (hexavalent compounds) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov. For additional information on Betts products and Proposition 65 list please see: https://www.bettsind.com/prop-65/