3″ QRB Hydrolet Valve – Packing Nut Style
The Betts 3” QRB (Quick Removable Bonnet) 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 QRB clamp-ring is ideal for applications where quick removable of the bonnet assembly is desired to inspect and clean the valve interior or perform maintenance such as seat or stem packing replacement.
Constructed from durable 316 stainless steel, the QRB Hydrolet is ideal for 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]. *
Product Details
| Assembly Part Number ** | Description | Inlet Flange | Outlet Configuration | Outlet Angle | Disc Seal Material ** | Weight |
|---|---|---|---|---|---|---|
| QR703SST | 3” 90° QRB Flanged Outlet | 3” TTMA (8 Holes on 4.88” B.C.) [123.8 mm] | Flanged (3" TTMA) | 90° Elbow | PTFE | 19.4 lbs. [8.8 kg] |
| QR713SST | 3” 90° QRB Threaded Outlet | 3” TTMA (8 Holes on 4.88” B.C.) [123.8 mm] | Threaded (3" NPT) | 90° Elbow | PTFE | 17.1 lbs. [7.8 kg] |
| QR763SST | 3” 45° QRB Flanged Outlet | 3” TTMA (8 Holes on 4.88” B.C.) [123.8 mm] | Flanged (3" TTMA) | 45° Elbow | PTFE | 16.3 lbs. [7.4 kg] |
| QR773SST | 3” 45° QRB Threaded Outlet | 3” TTMA (8 Holes on 4.88” B.C.) [123.8 mm] | Threaded (3" NPT) | 45° Elbow | PTFE | 15.9 lbs. [7.2 kg] |
| QR723SST | 3” Straight QRB Flanged Outlet | 3” TTMA (8 Holes on 4.88” B.C.) [123.8 mm] | Flanged (3" TTMA) | Straight | PTFE | 15.5 lbs. [6.0 kg] |
| QR733SST | 3” Straight QRB Threaded Outlet | 3” TTMA (8 Holes on 4.88” B.C.) [123.8 mm] | Threaded (3" NPT) | Straight | PTFE | 14.6 lbs. [6.6 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
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/