Pune, Maharashtra, India
Our Products
Leading Manufacturer, Supplier & Retailer of Wafer Check Valves, Check Valves, Silent Check Valves, Rubber Lined Check Valves and Silent Foot Valves.
Wafer check valves, Hydrodynamic Guided NRVS have introduced yet another design of Non Return Valve Wafer check Valves. Normex wafer check valves are simple in construction have sturdy design & are reliable in operations. These valves are very useful where weight of the valve is required be low & there is a space constraint for valve fitment. The face to face distance in these valves is extremely less as compared to standard valves. Salient Features • Sturdy but simple design. • 100% leak proof • Short length - less space required. • Light weight. • Lower pressure drop across the valve. • Low opening & closing pressures. • Wide range of materials, temperature & pressure ratings • Efficient flow characteristics. • Can be mounted horizontally & vertically. • Highly economical. • Epoxy coating over the entire surface.
Principal: Ball Type Check Valves (NRV) B-01 was the first of the valve at Normex with unique design and technology for the first time in India. A very simple and robust design with no mechanism involved. The heart ofб═ valve is rubber coated ball. The mechanism hinge-pin-disc used in conventional check valves is eliminated and Normex has put in this rubber coated ball to arrest flow media in return condition. As the pump starts, the ball moves out totally from the flow path when the pumping is on giving a full bore maximum flow/discharge with minimum head losses. (Fig. A). As the pump stops, the ball rolls back and seats perfectly on the rounded valves seat ensuring totally leak proof sealing.(Fig. B) Salient Features: Lowest possible pressure drop across the valves. 100% leak proof sealing years over years. Non-clogging and self cleaning as ball rotates during operation. Virtually no wear and tear, no maintenance and longer service life. Higher solid handling capacity due to full bore and straight internal path. Lower head loss-high discharge, reduced pumping time-All leading to Energy Saving. Applications: Clean water, Raw water, Sewage, Slurry, Waste water, Viscous liquids etc. Used in industries like: Fire fighting, Plumbing, Water distribution, Water/Sewage treatment, Irrigation/agriculture, Sewage plants, Steel mills, Power stations, Chemical/process industries, HVAC, Sugar/food industry, Breweries, Mining and many more. Dimensionally compatible with IS 5312 (Face to Face) • Can be installed vertically or horizontally • Operates silently • Operates at temp 80 0 C continuously (for 100 0 C application please contact us.)
| DESCRIPTION | STANDARD MATERIAL | ON REQUEST |
| BODY/COVER | CAST IRON (GG25) | S.G.IRON(DI)/WCB/ST.STEEL |
| BALL | NITRILE REINFORCED | NEOPRENE/EPDM |
| SEAT RING | L T BRONZE | ST.STEEL |
| FASTENERS | CARBON STEEL | ST. STEEL |
| PAINT | ENAMEL/EPOXYбâ PAINT | |
| END CONNECTION | FLANGED |
| 25 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | |
| D | 115 | 150 | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 395 | 482 | 527 |
| L | 144 | 174 | 200 | 240 | 260 | 300 | 350 | 400 | 500 | 600 | 700 | 800 |
| H | 115 | 160 | 180 | 210 | 230 | 280 | 340 | 400 | 500 | 570 | 680 | 800 |
| T | 15 | 15 | 16 | 16 | 19 | 20 | 21 | 21 | 22 | 24 | 25 | 29 |
Normex Valves Pvt. Ltd. brings this latest technology for the first time in India. Silent Check Valves are a short length double flanged valves with all the internals designed Hydrodynamically. This valves, when open, the annular area between the body & plunger available for flow, is equal to the nominal bore area. Therefore, unlike other spring loaded valves & conventional flapcheck valves, these valves offer lower head losses & maintains laminar flow. As the valve closes, due to return spring force, valve is “Quick Closing”. The valve gets closed before the start of back flow / return velocity. Hence, water hammer is eliminated in most of the cases. Features: 1.Working principal Hydrodynamic guided closing. 2.The closing mechanism is guided & backed with return spring for quick closing, Opening and perfect sealing. 3.Due to Aero/hydro dynamic effect water hammer is eliminated. 4.Very low pressure loss 5.Most suitable for clear liquids & air. 6.Silent operation.
| DESCRIPTION | STANDARD MATERIAL | ON REQUEST |
| BODY/GUIDE | CAST IRON (GG25) | |
| PLUNGER | S.G. IRON | |
| SPRING | STAINLESS STEEL | |
| SEAT RING | L T BRONZE | ST.STEEL |
| PAINT | ENAMEL PAINT | |
| END CONNECTION | FLANGED |
Dimensions (A = size in mm)
| A | 40 | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 |
| D | 150 | 165 | 185 | 200 | 220 | 285 | 340 | 406 | 457 | 527 | 578 |
| W | 85 | 105 | 128 | 156 | 194 | 264 | 346 | 430 | 500 | 600 | 686 |
| H | 85 | 100 | 120 | 140 | 170 | 230 | 290 | 355 | 398 | 475 | 560 |
Rubber Lined Check Valves (Flanged) are lined internally with Ebonite Hard rubber so that media does not come in contact with metal. This Model is most suitable for corrosive/erosive applications. The overall dimensions of this valve will be similar to standard Ball NRV bur face. To face length will br more by 6-10mm.
This is a heavy duty foot valves having all the advantages of standard HGC NRV. HGC footvalves are excellent foot valves for clear water, chemicals etc.
| DESCRIPTION | STANDARD MATERIAL | ON REQUEST |
| BODY/GUIDE/STRAINER | CAST IRON (GG25) | WCB/ST.STEEL |
| PLUNGER | S.G. IRON | WCB/ST.STEEL |
| SPRING | STAINLESS STEEL | |
| SEAT RING | L T BRONZE | ST.STEEL |
| FASTENERS | CARBON STEEL | ST.STEEL |
| PAINT | ENAMEL PAINT | |
| END CONNECTION | FLANGED |
The control application in pumping systems attracted Normex to come out with control Valves i.e. Butterfly Valves. The Normex Butterfly Valve superseded the Gate Valve, Ball Valve and Globe Valve in most spheres of applications. Gas tight sealing with excellent control characteristics and uni directional flow has qualified Normex Valves by most of the industries. The centrally mounted disc, shafts and bearings has minimised head loss. It’s low weight and compact design has achieved acceptability in industries like Chemical and Petrochemicals, Watertreatment, Agriculture and many • Excellent flow control in quarter turn operation • Low pressure drop • Low weight, low maintenance, long service life • 100% tight shut of Salient Features Excellent flow control in quarter turn operation. Compact, space saving design. Bi-directional1 00% tight shut off. Low weight, low maintenance, long service life, Easy automation / retrofit possible. Stream lined valve disc for lower pressure drop. Both shafts mounted in bearing supports for easy operating torques. Suitable for mounting between all standard flanges. Gasket packing not required to install between flanges. Sizes: 40mm to 400mm Application 1. Water treatment plants 2. Water distribution systems 3. Power Stations 4. Chemical / Petrochemical Industries 5. Steel Mills 6. Sugar Factories / Breweries 7. Sewage Plants 8. Process Industries 9. Seawater and Brine Pumping 10. Food Processing Industries 11. Mining Industries
| Part | Description | Std. mode of construction | Options |
| 1 | Body | Cast Iron, GG - 25/ IS - 210 FG - 260/ BS - 1452 Gr. 260 |
SG Iron GGG 40 Cast Steel (WCB) Stainless Steel CF8 / CF8M |
| 2 | Disc | SG Iron, GGG 40 IS - 1865 SG 400/12/ BS - 2789 Gr. 240/12 |
Cast Steel (WCB) Stainless Steel CF8/CF8M Aluminium Bronze IS 305 Gr2 |
| 3 | Seat | EPDM | Black Nitrile, Neoprene, Viton, Silicon, Hypalon or as per customer's requirements. |
| 4 | Shafts | AISI 410 | SS304/SS316 |
| 5 | Bearings |
Self lubricating Phosphor Bronze |
PTFE |
| 6 | 'O' Rings | Nitrile | EPDM, Neoprene |
| 7 | Bush | Polyacetal (Delrin) | PTFE |
| 8 | Taper Pin | AISI 304/410 | AISI 316 |
| 9 | Plug | Carbon Steel | --- |
| 10 | Hand Lever | MS | CI / SGI / SS |
| A | L | D | T | E | Wt(Kg) |
| 40 | 33 | 55.5 | 101 | 240 | 2.1 |
| 50 | 43 | 64 | 111 | 240 | 2.8 |
| 65 | 46 | 72.5 | 121 | 240 | 3.4 |
| 80 | 46 | 79.5 | 128 | 240 | 3.6 |
| 100 | 52 | 99 | 147 | 240 | 4.6 |
| 125 | 56 | 115 | 159 | 240 | 6.3 |
| 150 | 56 | 128 | 173 | 330 | 8.7 |
| 200 | 60 | 156 | 199 | 330 | 12.2 |
| 250 | 68 | 212 | 248 | 500 | 25.0 |
| 300 | 78 | 239 | 270 | - | 32.0 |
| 350 | 78 | 260 | 321 | - | 64.5 |
| 400 | 100 | 298 | 345 | 69.4 | |
| 450 | 108 | 326 | 373 |
Spring check valve, This valves, when open, the annular area between the body & plunger available for flow, is equal to the nominal bore area. Therefore, unlike other spring loaded valves & conventional flapcheck valves, these valves offer lower head losses & maintains laminar flow. As the valve closes, due to return spring force, valve is “Quick Closing”. The valve gets closed before the start of back flow return velocity. Hence, water hammer is eliminated in most of the cases.Features: 1.Working principal Hydrodynamic guided closing. 2.The closing mechanism is guided & backed with return spring for quick closing, Opening and perfect sealing. 3.Due to Aerohydro dynamic effect water hammer is eliminated. 4.Very low pressure loss 5.Most suitable for clear liquids & air. 6.Silent operation.
