4″ Outside Screw & Yoke Hydrolet QRB Valve – 45 Degree Elbow
This valve has the same features as our standard Q.R.B. but with the added advantage of having an outside screw and yoke which isolates the threads of the stem from the product being hauled. The Betts Q.R.B. Hydrolet Valve with the exclusive quick-removable bonnet, is designed for use on transport tanks hauling a variety of products, where easy dismantling for cleaning and inspection is essential. The valve is available in flanged or threaded outlets. The valve is constructed of 316 stainless for compatibility with a wide range of products.
Pressure and Temperature Rating:
- Max working pressure (MAWP): 35 psi [2.4 bar]
- Max temperature (dependent on seal):
- PTFE, FKM or Non-Asbestos: 400°F [204°C]
- Nitrile (Buna-N): 230°F [110°C]
Product Details
| Assembly Number | Dimensions | Flange-Inlet & Outlet | Outlet | Wt. |
|---|---|---|---|---|
| QY764SST | F: 7 3/4" [197 mm] G: 8 5/16" [211 mm] | I.D.: 4 3/8" [111 mm] B.C.: 5 7/8" [149 mm] Holes: 8-7/16" [11 mm] | Flanged | 21.3 lbs (9.7 kg) |
| QY774SST | E: 8 1/8" [206 mm] H: 8 17/32" [217 mm] | I.D.: 4 3/8" [111 mm] B.C.: 5 7/8" [149 mm] Holes: 8-7/16" [11 mm] | 4" Threaded | 21.3 lbs (9.7 kg) |
| NOTE: Stainless 316 valves are standard with PTFE disc, gasket & packing (Suffix "T"). For variations and replacement parts see section 10, Page 5B. | ||||
Repair Kits and Accessories
Installation & Maintenance
Prop 65
WARNING: This product can expose you to chemicals including Lead, 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/