Latest return valve Tenders | Government return valve Tenders

Central Government/Public Sector

CTN :45098196

16 May, 2026 13.45 Lacs

Nagpur - Maharashtra

Tender For supply of cast steel sluice valve 6 , 150mm , cast steel sluice valve 8, 200 mm cast steel , cast steel non return valve 6 ,150 mm , cast steel non return valve 8 ,200 mm , cast steel foot valve 8 ,203 and 200mm , cast steel foot valve 10 ,250mm , cast steel foot valve 12 ,300mm

CTN :45113341

28 May, 2026 NA

Mumbai - Maharashtra

Tender For tender for supply of additional obs for indegenised stabilizer system 25blec101 - tube shell cooler , servo valve , flexible coupling service kit (for main pump motor) , flexible coupling service kit (for aux pump motor) , actuator seal kit , gland packing 1 set 1x10m , seal kit for hpu pump , servo filter element , case drain filter element , flushing trolley filter element , pressure switch , pressure gauge 10 mm dial 0 25 bar , pressure gauge 10 mm dial 0 250 bar , pressure gauge 0 250 bar , seawater pressure gauge 100 mm dial , pressure gauge 100 mm dial 0 315 bar , pressure gauge 100 mm dial 0 40 bar , cooler seal kit , level switch , thermo switch with ball valve , ventilating filter with inbuild double chk valve , spanner for inboard outboard nut , hydronut spacer , sizing tool for 125 glydring , pushing tool fr 125 glydring , loading mandrel for 125 glyd ring , resizing tool for 7 rod seal , hydro nut , hand pump , accumulator charging kit , vme 10 channel serial isolator card aitech c106 , 10 slot vme 64x generic backplane , vme 64x discrete output card optocoupler v2 , vme 64x discrete input card v2 , vme 64 x ai 16 card , vme 64 x ao 16 card , vme serial server card , plc relay coil24v dc contact 6a 230 vac , 19 vme rack for controller , 400a thyristor fuse bussmann din type t 170m3819 , push button 22 5 mm dia flush head type no p2af3 , contact elements normally open silver contacts , ac mcb 4amp , mcb hager 3p 4a c curve type ncn304n , push button 22 5 mm dia flush head type no p2af4 red , contact elements normally close silver contacts , push button 22 5 mm dia type no p2af2 black flush head , motor protection relay microprocessor based , mpr300 1 2 75 a 240vac 3ph 50 hz , selector switch 2pos 22 5 mmoperation non spring return , mounting adaptors make eaton type no m22 a4 , contact blocks 2 normally open contact type no m22 ck20 , mounting adaptors make eaton type no m22 a , contact blocks m22 ck11 1 no 1nc , interposing relay 240vac , soft starter ats48c17q ss rating 90kw motor rating 75 kw , control trafo 380 240v 300va , mo0 2no 2nc contactor , mo0 4no contactor , led lamp green 380v ac teknic 22 5 mm dia , led lamp teknic 380v ac red teknic 22 5 mm dia , mcb hager 3p 2a c curve type ncn302n , mnx 140 contactor 380v 50hz coil , acos pcb 3ph 440v ac 50hz , auxiliary pump single vane , vme sbc 2c106 , 12 1 xga lcd display with single board computer , green indicator assembly for eao 84 , red ipb assembly for eao-84 , green ipb assembly for eao 84 , selector switch 3pos 22 5 mmoperation non spring return , mcb 10a dp , hand pump

CTN :44956374

30 May, 2026 NA

Uttara Kannada - Karnataka

Tender For corrigendum : supply of ep7169d-18cr000c0225 (cartridge type - non-return valve (bm00534, bm00535) ) , ep7169d-18cr000c0227 (cartridge type - non-return valve (bm00480, bm00515) )

CTN :45119017

29 May, 2026 NA

Mathura - Uttar Pradesh

Tender For supply of latest is and description , supply and install non return valve nrv of ci of size 50 mm as per latest is and description , supply and fixing stop valves cast copper alloy screwed down high pressure with crutch or butterfly handle, of dia 20 mm as per latest is and description , supply and fixing stop valves cast copper alloy screwed down high pressure with crutch or butterfly handle, of dia 15 mm as per latest is and description , supply and fixing mild steel pot strainer of 100 mm bore as per latest is and description , supply and fixing new mild steel ystrainer of 80 mm bore as per latest is and description , supply and fixing new mild steel ystrainer of 65 mm bore as per latest is and description , supply and fixing new mild steel ystrainer of 50 mm bore as per latest is and description , supply and install pressure gauge in the pipe lines suitable for dia 15 mm pipe as per latest is and description , supply and install thermometers in the pipe line suitable for dia 15 mm as per latest is and description , gi pipe medium grade of 50 mm dia , gi pipe medium grade of 20 mm dia , gi pipe medium grade of 15 mm dia , supply assembly and erection of pgi sheet with tdf flange of thickness 22 gauge sheet as per description , m and l for duct insulation with 25 mm thick all as per description , m and l for wraping glass cloth incl uv chemical coating over nitrile rubber. thickness of glass cloth shall be provided as per oem recommendation , m and l for supply air grilis with extruder aluminium powder coated and size and type of air grills alongwith air volume shall be provided as per oem recommendation , m and l for return air grills with extruder aluminium powder coated without air volume control shall be provided as per oem recommendation , dismantling old false ceiling any type as per description , supply and install 3 way valve of ci of size 80 mm dia , demolition of brick work or floor as per description , m and l for brick work with sub class b brick straight or curved as per description , m and l for plastering 12 mm thick on fair faces of brick as per description , m and l 150 mm thick cement concrete 1 ratio 2 ratio 4 type b2 40 mm graded broken stone aggregate as per description , supply laying testing xlpe cable insulated heavy duty 1100 volts aluminium conductor of size 150 sq mm 3 and half core as specified and directed , m and l for 100 mm bore steel tubing light grade complete all as specified and as directed , supply laying testing xlpe cable insulated heavy duty 1100 volts aluminium conductor of size 95 sq mm 3 and half core as specified and directed , m and l for xlpe insulated armoured ug cables 3 point 5 core x 50 sqmm 1100 volts grade aluminium conductor including termination complete as specified and directed , m and l for xlpe insulated armoured ug cables 3 point 5 core x 35 sqmm 1100 volts grade aluminium conductor including termination complete as specified and directed , m and l for xlpe insulated armoured ug cables 4 core x 16 sqmm 1100 volts grade aluminium conductor including termination complete as specified and directed , m and l for earthing complete with gi earth plate electrode 600 x 600 x 6 mm thick burried directly in ground with 32 x 6 mm gi strip , sitc of lt control panel board cubical type indoor type floor mounted weather proof fabricated out of 2 point 0 mm crca sheet ae per drawing.

CTN :44938217

11 May, 2026 NA

Sonitpur - Assam

Tender For bid to ras supply of fd toilet bio e e - reducer t 32 to 20 to 32 mm dia , ppr union 32 mm , tank connector 32 mm , pvc wall clamp 32 mm , pvc wall clamp 20 mm dia , float valve 25 mm , gate valve 32 mm , m seal 150 gm pkt , taplon tape roll , solvent cement 150 gm tube , pvc waste pipe 32 mm and 1m long , chromium plated waste coupling 32 mm dia , non skid ceramic tiles of size 300mmx300mm on the floor , cp grating 100 mm dia , pvc pipe 110 mm dia 3 mtr long , pvc socket 110 mm dia , pvc bend 110 mm dia , p trap , s trap , pvc air pipe 25 mm dia comma length 3 mtr , white cement , vitreous china wash hand basin white of size 450mmx300mm with vitreous china pedestal of suitable size , ppr reducer elbow 32mm x 20mm dia , electric geyser 25 ltr , brass cp wall mixer for mixing hot and cold water screwed down for ppr pipe of dia 20mm , brass chromium plated shower rose 100 mm dia with bend , urinal pot vitreous china bowl urinal pot flat back , pvc t 110 mm dia , brass cp jet water spray with 1 point 2m long flexible tube for ewc , ppr reducer socket 32 to 25mm , ppr plain socket 20 mm dia , ppr elbow 20 mm dia , distribution box 6 way spn comma 240 volts copper bus bar and neutral link , mcb spn 240 volts 32 amps , mcb sp 6 to 32 amps , pvc tape 19mm wide 5 m long , cable pvc insulated electric cables heavy duty copper conductor of size 1 point 5 sqmm single core , pvc casing capping of size 1 inch medium grade snow white , switch piano 5 amp 230 volts flush type one way snow white , led tube light fittings 20w 230v box type 4 feets with crca body pre coated white and prewired for led tube complete , led mirror lights 1 feet 5 watts , steel screw full thread with rawl plug of 1 1 oblique2 inch size isi marked 100 nos per pkt , pvc switch board snow white size 7 inch x 4 inch for sockets and switches , pvc switch board snow white size 8 inch x 10 inch for main switches db , pvc l bend and t junction joint for pvc casing and capping , service bracket 40mm dia gi tubing medium grade 1 point 5 mtr long , cable pvc insulated electric cables heavy duty aluminum conductor of size 6 sqmm twin core , ceiling rose three terminal snow white , led bulk head fitting high with led lamp 10 watts , pvc flexible wire copper conductor multi stranded 0 point 0016 oblique 76 , pvc flexible conduit pipe 15 mm dia , pvc round oblique square block , plastic body fresh air fan with louvers shutter of 200mm sweep , cable pvc insulated elecric cables heavy duty 1100 volts copper conductor of size 4 point 0 sqmm single core , switch socket combination snow white multipurpose 2 in 1 comma 15 amp 230 volts , monoblock pump set single phase capcity 2hp , distribution box 2 way with mcb spn 240 volts 10 amp , pvc flexible suction hose pipe 25mm dia , non return valve nrv metal 25mm dia , earthing plate 600 x 600 x 6 mm galvanised steel suitable for gi strip fittings , testing point terminal block make of gun metal and phosphorus bronze size 75 x 75 x 25 mm , ci earth pit cover of size 300 x 300 x 6 mm with angle iron of size 20x20mm comma 3 mm thick with ms frame , funnel fitted with 20 mm diameter gi pipe 1 point 5 m long pipe , gi wire 4 mm diameter for earthing , charcoal , salt normal , kassi with handle , black steel sr shovel spade belcha , plaster trowel with wooden handle , showel square nose 14 gauge blade size 310 x 245 mm , plumb bob iron , crow bar 1 point 5 inch dia 4 feet long , hammer 1 kg with wooden handle durmut , hammer 0 point 5 kg with wooden handle durmut , brick line 30 mtr nylon dhaga , traveler brick mason 4 inch 305mm , sprit level , measuring tape 30 mtr steel , water bucket steel 13 inch dia , picks axes with chisel and point ends kudali 14 cp //bid details 2 / 76 nominal weight 3 point 0 kg , lime brush best quality , painting brush 100mm , hacksaw frame large with blade 05 nos , galvanised iron pan mortar tasla comma 18 gauge 20 inch dia , wooden waterproof plywood thickness 12mm , nails various sizes , rammer earth with handle m

CTN :44997962

11 May, 2026 NA

Dimapur - Nagaland

Tender For bid to ras corrigendum : supply of shelter parts and other items for combined toilet bathroom block c c - tank nipples 25mm diameter , float valve brass 20mm complete set , ppr pipe 25mm dia uv stabilized 3 layers , ppr gate valve 25mm dia , ppr pipe union 25mm dia , ppr pipe socket 25mm dia , ppr pipe elbow 25mm dia , ppr pipe tee 25mm dia , ppr reduction tee 25 by 20 , ppr pipe tee 20mm , ppr pipe elbow 20mm , pptr reducer elbow 25 by 20 , ppr pipe tank nipple 20mm , ppr pipe socket 20mm , ppr wall clamps 20mm , ppr wall clamps 25mm , ppr end cap 25mm , ppr end cap 20mm , ppr socket male brass threaded 20mm , ppr elbow female brass threaded 20mm , ppr socket female brass threaded 20mm , ppr tee female brass threaded 20mm , pvc swr pipe 110mm 3m long with socket end isi marked , pvc swr bend with accses door 110mm bore isi marked , pvc swr tee 110mm bore isi marked , pvc swr socket110mm dia isi marked , pvc swr bend 110mm with all accessories bore 110mm bore , pvc swr cowl 110mm dia , pvc swr pipe of 75mm dia 6 mtr long with collar foe wastagedisp to soak pit tank isi markd , pvc floor trap 75mm dia with grating isi marked , pvc tee 75mm dia isi marked , pvc elbow 75mm dia isi marked , pvc coupler 75mm dia isi marked , anaeobic fro or lldpe septic tank 3000 ltr capacity icl all fittings , perfoated soak pit chamber of 2000 ltrs capacity , thread gola , solvent cement for pvc pipe , wood screw 1 by 2 inch pkt of 100 , adhesive for pvc pipe fixing , 110 to 115mm dia diamonds blade for tile cutting , iron cutter blade of size 14 inch dia , synthetic enamel paint green colour , synthetic enamel paint black colour , synthetic enamel paint white colour , foam roller brush for wall painting , writing brush of best quality , painting brush 3 inch , led tube light rod 15 watt 1600 lumens output complete set , 8 watt led fittngs tube rod complete set , exhaust fan 450mm sweep isi marked , pvc insulated unarmoured cable 10 sqmm twin core aluminium conductor isi marked 1100 volt , porcertain insulating hangers , pvc insulated unarmoured standrad conductor cable of size 1 point 5 sqmm conf to isi marked , pvc insulated unarmoured standrad conductor cable of size 2 point 5 sqmm conf to isi marked , pvc insulated unarmoured standrad conductor cable of size 4 sqmm conf to isi marked , modular switch piano flush type 6 amps 240 volts single pole one way isi marked , modular switch piano flush type 16 amps 240 volts single pole one way isi marked , modular socket outlet multipurpose 2 by 3 pin 6 amps flush button type , modular socket outlet multi purpose2 in 1 6 and 16 amps , surface mounting plastic boxes suit for switches 12 module of size 8 inch into 6 inch , surface mounting plastic boxes suit for switches 8 module of size 9 inch into 3 inch , surface mounting plastic boxes suit for switches 6 module of size 8 inch into 3 inch , surface mounting plastic boxes suit for switches 4 module of size 5 inch into 3 inch , combined cover plate with frame inner and outer of 12 module , combined cover plate with frame inner and outer of 8 module , combined cover plate with frame inner and outer of 6 module , combined cover plate with frame inner and outer of 4 module , blanking plate for switch or socket , cealing rose with square box 65 into 50mm 2 to 3 terminals , pvc flexible nibbed pipe 20mm dia , pvc conduct pipe 20mm dia isi marked , pvc elbow for 20mm dia pvc conduit pipe , pvc space bar saddies for 20mm dia pvc pipe , pvc coupler for 20mm dia pvc pipe , pvc tee for 20mm dia pvc pipe , pvc casing capping 25mm conf to is , pvc coupler for 25mm casing capping , pvc tee for casing capping 25mm conf to is , pvc socket for casing capping 25mm //bid details 2 / 79 conf to is , pvc elbow for casing capping 25mm conf to is , pvc corner bend for casing capping 25mm conf to is , pvc junction box two way 20mm conf to is , pvc junction box three way 20mm conf to is , pvc junction box four way 20mm conf to is , pvc junction linker 75 into 75 mm , house se

CTN :45115476

18 May, 2026 21.01 Lacs

Pathankot - Punjab

Tender For supply of misc em and br items - ac static watthour meters - energy meter (v2) as per is 13779 (q2) , gi elbow 15mm specs as per pdf documents , gi elbow reducer specs as per pdf documents , gi nipple 15mm specs as per pdf documents , gi nipple 15mm x 50mm isi marked , gi nipple 20mm x 100mm make isi marked , gi nipple 20mm x 50mm dia isi marked , gi nipple 20mm x 80mm dia isi marked , gi plug 20mm dead specs as per pdf documents , gi plug 15mm dia isi marked , gi socket 15mm isi marked , gi socket 20mm dia isi marked , gi tee 15mm isi marked , gi tee 20mm isi marked , gi union 15mm dia isi marked , pvc pipes 15mm dia 3m long , gi elbow 15mm bore isi marked , gi elbow 20mm isi marked , gi elbow 25mm isi marked , gi nipple 15mmx100mm make isi marked , gi nipple 15mm x 300mm as per sample , gi nipple 15 x 150mm as per sample , gi nipple 20mm x 300mm as per sample , gi nipple 25mm x 150mm , gi nipple 40mm x 150mm , gi socket 25mm , gi socket 40 mm make r brand , gi socket 50mm , ci bib tap 20mm , pre laminated gypsum specs as per pdf documents , pvc socket for 110mm bore pipe , pvc socket for 75mm bore pipe , chemical for att 20 percent ec , ci collar 150mm dia , coarse aggregate 12 point 5mm graded , flush strip make specs as per pdf documents , g i wire mesh having specs as per pdf documents , s stainless steel specs as per pdf documents , sand course , sand fine , white cement based specs as per pdf documents , mannual changespecs as per pdf documents , mannual change over specs as per pdf documents , ht copper fuse 10 amps , ht copper fuse 20 amps , ht copper fuse 30 amps , ht copper fuse 40 amps , ht copper fuse 50 amps , ht copper fuse 60 amps , high tension tar tape 11000 volts , low tension tape 30 mtr , pg clamp aluminium specs as per pdf documents , high tension hard specs as per pdf documents , low tension hand gloves 1100 volts , bambrro ladder 22 foot , bambrro ladder 18 foot , bambrro ladder 15 foot , pvc float valve 20 mm specs as per pdf documents , pvc connection specs as per pdf documents , pvc bib cock 15 mm prima , cp bib cock long body 15 mm , pvc connection specs as per pdf documents , cp waste coupling 32mm for wash basin , pvc sheet cover for ewc , pvc urinal waste pipe 50 x 800mm , pvc waste pipe 40 x 1150mm , gi tee equal 15mm , gi union socket 15mm , gi socket 15mm , butt hinges steel 75mm , pvc kit for low specs as per pdf documents , helical door spring 150mm , gi elbow 15mm , gi pipe 20mm , m-seal 100g pack , gi union socket 20mm , gi nipple 15mm x 100mm , oil putty , pvc stop cock 15mm , cp waste coupling, 125mm for kitchen sink , face half turn for cp bib cock 15mm , gi nipple 15mm x 50mm , gi pipe 15mm , pvc lid for water specs as per pdf documents , figured glass of size 4feet x 4feet x 3mm , gi nipple 20mm x 150mm , looking mirror size specs as per pdf documents , gi nipple 15mm x 150mm , gi nipple 15mm x 75mm , plain sheet glass 3mm specs as per pdf documents , cp shower rose specs as per pdf documents , wooden screw 25mm pkt of 100 nos , jumper or washer 15mm , alumn floor door stoper double type , door seal 4feet long , gi plug 15mm , nut bolt and washers 3inch , half round bedding , aluminium door specs as per pdf documents , gi nipple 15mm x 100mm make isi marked , gi nipple 20mm x 150 mm , gi nipple 25 x 50 mm , gi nipple15mm x 75mm , gi plug 20mm specs as per pdf documents , gi union socket 15mm make r brand , gi union socket 20 mm make r brand , gi union socket 25 mm make r brand , plastic laminated sheet specs as per pdf documents , jumper or washer 20mmac static watthour meters - energy meter (v2) as per is 13779 (q2) , gi elbow 15mm specs as per pdf documents , gi elbow reducer specs as per pdf documents , gi nipple 15mm specs as per pdf documents , gi nipple 15mm x 50mm isi marked , gi nipple 20mm x 100mm make isi marked , gi nipple 20mm x 50mm dia isi marked , gi nipple 20mm x 80mm dia isi marked , gi plug 20mm dead specs as per pdf documents , gi plug 15mm dia isi marked , gi socke

CTN :45118916

29 May, 2026 NA

South Andaman - Andaman And Nicobar Islands

Tender For supply of eb1005v-16019009 ball bearing , eb1005v- 173 gasket , eb1005v-bv65-160l-12 shaft , eb1005v-bv65-160l-122- 4 bush , eb1005v-bv65-160l-121-3 o ring , eb1005v- bv65-160l-12a sleeve shaft , eb1005v-bv65-160l-19-1 ball bearing deep groove skf 6308 c3 eqv , eb1005v- bv65-160l-61 wearing ring casting , eb1005v-bv65- 160l-46a seal mechanical , eb1005v-bv65-160l 165 mounting shock vibration type l ns cat no 0413 123 5857 and , eb1005v-bv65-250l-19-2 ball bearing , eb1005v-c912-4-12 14 18 a pump shaft including key and nuts , eb1005v-c912-121-1 o ring , eb1005v-c912- 4-122-8 nut nylock , eb1005v-c912-4-14- key impeller , eb1005v-c912-4-16 gasket 1 to 7 , eb1005v-c912-4-46a seal mechanical durametallic , eb1005v-c912-4-21 cup grease , eb1005v-c912-4-58 circlip light series 90x3 , eb1005v-c912-4-9 gland split , eb1005v-c913-4- 19-1 ball bearing deep groove , eb1005v-cpuc4063 bush , eb1005v-cpuc3057 disc , eb1005v-cpuc5063 washer , eb1005v-cpuc6063 socket head bolt coupling , eb1005v-msde0000 mechanical seal , eb1005v-msdx00tt mechanical seal unit , eb1005v- s250009 bush bearing , eb1005v-sh32-12a shaft sleeve gun metal dgs 20-3a 75012a15 , eb1005v- sml11500 anti vibration mounting , eb1005v- v3212255 shaft , eb1005v-v3312055 shaft , eb1005v- v3403025 impeller , eb1005v-v3319109 deep groove ball bearing , eb1005v-v3319009 angular contact ball bearing , eb1005v-v3331m15 spacer , eb1005v- v3a21a81 grease gun with cover , eb1005v-v51l-cpa coupling assembly , eb1005v-v67d40a4 oil seal , eh5229d-a-64622-00200-01900 hcg ks , eb1005v- b6861021 wearing ring casing , eb1005v-ao2000 46 mechanical seal be make , eb1005v-bv100-315l-46a mechanical seal , eb1005v-bv65-160l-121-1 o ring , eb1005v-bv65-160l-184 nut lock for impeller , eb1005v-bv65-160l-28 mechanical seal plate , eb1005v-bv65-160l-3 impeller , eb1005v-bv65-160l-62 wearing impeller , eb1005v-bv65-250l-122-4 bush , eb1005v-bv80-160l-3 impeller , eb1005v-c912-4-12a sleeve shaft , eb1005v-c912-4-19-2 sr angular contact ball bearing skf 7308becbp eqv , eb1005v- c912-4-62 ring wearing for impeller , eb1005v-c913- 4-18a nut lock for impeller , eb1005v-cpuc8063 nyloc nut , eb1005v-pg402100 pressure gauge suction 0-2 1 kg cm2 , eb1005v-sh32-76-6 hex head bolt with nut m12 brass , eb1005v-sh80-140-6-12 shaft , eb1005v-sh80-140-6-140-1 non return valve , eb1005v-sh80-140-6-19-2 ball bearing , eb1005v-sh80- 140-6-46a mechanical seal , eb1005v-v33c11a2 o ring , eb1005v-v33c12a2 o ring , eb1005v-v6803125 impeller , eb1005v-v6812155 shaft , eb1005v-v68b- bha bearing housing assembly , additional charges //bid details 2 / 51

CTN :44740669

14 May, 2026 NA

South Andaman - Andaman And Nicobar Islands

Tender For corrigendum : supply of en6084b-085-10-1 test lamp for ep-actulator-25amp , en6084b-51t8301005 lamp socket , en6084b-002a pressure switch for halon cylinder , en6084b-002b pneumatic actuator , en6084b-002c high pressure switch , en6084b-017a pressure switch for n2 bottle , en6084b-ale-u78-1-0 remote release print , en6084b-ale v18 2-0 detection print , en6084b-d-510 electric horn , en6084b-din-41571-81-2 fuse 0 25 amp forrelease print , en6084b-din-41576-h2a 250g fuse 2 amp , en6084b-s36ms330-11yr alaram switch resistor , en6084b-ap-24-4k annuciation panel , en6084b-085t01-2-5a test lamp , en6084b-g0607-6337- 0200 non return valve , en6084b-g0703-4161-0000 pneum actuator , en6084b-g0703-6733-0000 venting valve , en6084b-m2-5a-250g fuse 2 5 amp , en6084b-m6- 3a-250g fuse m6 3 amp , en6084b-rz-22-4-24vgs relay k2 , en6084b-a-bl-k alarm flash light , en6084b-51- 121-025 luminous key , en6084b-51-131-025 luminous key , en6084b-51-272-025 luminous switch , en6084b- 5422 bulb exitractot ) /bid number : gem/2026/b/7390447 * /dated: 02-04-2026 & & / bid document 1 / 23

CTN :44924000

15 May, 2026 NA

Mysore - Karnataka

Tender For corrigendum : supply of non return valve make ritag zwischenflansch dn 25, pn 16, edelstahl as per annexure

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