SWING TYPE NRV's
| Size range | upto 3000mm |
| Type of Opening . | Circular / Square / Rectangular |
| Mfg./ Design Std. | IS 3042 / IS 13349 or AWWA C 501 / BS 7775 |
| Types Of Gate | Type – A : Spigot / Flat back frame single faced sluice gate Type – B : Thimble mounted flange back frame single faced sluice gate. |
| Pressure Class | CL-1, CL-2 & CL-3 (seating / Unseating Unbalanced Water head) |
| Application | For regulating flow in out of conduit |
| Type of spindle | Rising / Non rising |
| Vertical Mounting | Mounted on wall through permanent grouting for Type – A gate Mounted on face of wall through wall thimble for Type – B gate |
| Lift Mechanism | Headstock – Mounted separately on platform above gate frame |
| Frame, Slide & other C.I. Parts | C.I. to IS: 210 Gr. FG-200/260 or BS 1452 or ASTM A 126 |
| Seating Faces | L.T.B to IS : 318 Gr.2 / S.S. AISI-304 & 316 |
| Cushioning | Operate to break the vacuum where separation takes place and Reduce the inertia of returning water column by using air intake |
| Spindle | M.S. to IS : 2062 / S.S. AISI – 410 / 304 / 316 |
| Fasteners & Anchor Bolt | M.S. / Carbon Steel / S.S. AISI – 410 / 304 / 316 |
| Accessories (If required) | Coupling, Guide Bracket, Extn. Spindle, Flush Bottom, Indicator Etc., |
| Actuation | • Hand wheel, Gearing, Electric / Pneumatic Actuator |
| Special Features | • Available in convention as well as Flush Bottom Closure. • Generally upward opening as well as downward opening on request • Application for sewage treatment and water works • Reduced operating loads (Single person to operate with effort < 18kgf, • Available in fabricated Steel, Stainless Steel & Ductile Iron. |