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ACME India Mark Hand Pump

ACME® India Mark -II

Stainless Steel Deep Well Hand Pump (DWHP)

Desidertum of public domain deep well hand pump (DWHP)-proven design, inter-changeability of components, longer life, reliable performance, and demanding minimum possible maintenace lead to development of India Mark II deep well hand pump in 1979 in response to severe drought India faced in 1977. Today, it is one of the most popular and widely used deep well hand pump in the world with over 7 million installations world wide.

India Mark-II hand pumps were manufactured to IS:9301 specifciation is the culmination of combined research and development initiative of UNICEF India, Bureau of Indian Standards (BIS), government agencies and elite manufacturers. The handpump specifications ever since its devlopment have ungerone several revisions and amendments to suit local conditions in India, less developed nations (LDS), and developing nations grappling with clean drinking water issues across the world. The pump cylinder components are manufactured in brass/gun metal alloy and then assembled into a cast-iron cylinder body, which is fitted with brass liner on the inside. The pump has mild steel galvanized plunger and connecting rods with some nitrile (Butadience acrylonitrile or Buta N) rubber parts.

Keeping in perspective conventional advantages of stainless steels, and being a 100% recyclable material, ACMECAST pioneered design, development and manufacturing of corrosion resistant stainless steel deep well hand pump cylinder, cylinder components, connecting rod and rise main systems. ACMECAST is a manufacturer-supplier-exporter to all OEMs in India engaged in manufacturing of India Mark Deep Well Hand Pumps in stainless steel configuration grades SS 304, and SS 316.

Our pump parts are made in better corrosion resistant alloy material that what is specified in the Indian Standard Specification IS:9301-martensitic stainless steel grade SS 410. The cylinder, connecting rods, plunger rods and other assemblies are made from stainless steel conforming to AISI 304/ 316 while the cast cylinder components are manjufacturer to ACI-ASTM A 743/ A 743 CF-8 (SS 304), CF-8M (SS 316) USA stainless steel casting standard specification which is equivalent to wrought alloy type AISI 304 and AISI 316. The cast components can be further offered in ACME Proprietary Modified alloys by stabilzing it with titanium and niobium/columbium that enhances corrosion resistance and welding ability. Use of stainless steel pump cylinder with inner diameter super finished to high degree of smoothness eliminates the use of brass liners used in conjunction with the cast iron cylinder body.

Argon/eletrode arc welding protocols confirm to weld procedures and welding standards of ASTM/ AWS. The parts are finally cleaned and provided with good buffed surface finish.

Lately, with the proliferation of poison plastic PVC being of low cost compared to stainless steel and mild steel has been replaced by more amenable, recyclable uPVC. To meet the budget requirements of projects that cannot afford complete stainless steel solution, are replaced by uPVC riser main systems while keeping pump cylinder unit, plunger rod and connecting rod system in stainless steel SS 304/ SS316. Furthermore, many hand pump NGO’s and Government Water Projects also at times use SS 410 connecting rod and pluger rods instead of SS 304/ SS316.

ACMECAST is committed to providing stainless steel solutions to deep well hand pump used for community service and providing clean drinking water to people across the world.

Cylinder Assembly Components

Part Number Number Description Material as specified in the IS: 9301 standard specification for deep well hand pump India Mark II AcmeCastR Material specification
1 One (1) Plunger rod Gr 04 Cr 10 Ni 10 SS 304 / SS 316
2 Two (2) Reducer cap (Upper & Lower) Grade FG 200 SS 304 / SS 316
3 Three (3) Sealing ring Nitrile rubber Nitrile rubber
4 One (1) Plunger yoke body Gr LTB 2 SS 304 / SS 316
5 Two (2) Hex coupler M12 x 1.75 Gr 04 Cr 18 Ni 10 SS 304 / SS 316
6 One (1) Rubber seating (upper valve) Nitrile rubber Nitrile rubber
7 One (1) Upper valve Gr LTB 2 SS 304 / SS316
8 Two (2) Pump buckets Nitrile rubber Nitrile rubber
9 One (1) Spacer Gr LTB 2 SS 304 / SS 316
10 One (1) Follower Gr LTB 2 SS 304 / SS 316
11 One (1) Cylinder body Grade FG 200 SS 304/ SS316
12 One (1) Brass Liner Cu Zn 30 Not Required
13 One (1) Rubber seat retainer Gr LTB 2 SS 304 / SS316
14 One (1) Rubber seating of lower valve Nitrile rubber Nitrile rubber
15 One (1) Check valve Gr LTB 2 SS 304 / SS316
16 One (1) Check valve seat Gr LTB 2 SS 304 / SS316

Material

The pump components are manufactured in corrosion resistant stainless steel (18/8) of type SS304 and SS316. The wrought alloy chemical compositions are slightly different from the cast alloy counterparts in ASTM, ANSI, AISI, SAE, BS, ANFOR, EURO NORM and other country standards. (Reference: Annexure A. It is available in PDF formatand can be downloaded from the technical literature page of our website.) The cast components are made to the AlloyCasting Institute (ACI) – American Society of Testing Materials (ASTM) standard ASTM 743 A/ 743 M. Other parts like cylinder pipes, connecting rods, plunger rods, hex couplers, bolts etc., are made in stainless steel from bright bar stock or formed products confirming to American Iron and Steel Institute (AISI) standards type 304 and 316.

Standard: ACI- ASTM 743 A/ 743 M cast equivalents of wrought alloy types AISI 304 & AISI 316

Chemical Composition SS 304 SS 316
Chromium(Cr) 18.0%-20.0% 19.0%-21.0%
Nickel(Ni) 8.0%-11.0% 9.0%-12.0%
Carbon(C) 0.08%-0.40% 0.08%-0.40%
Molybdenum(Mo) 0.50% max 2.0%-3.0%
Niobium(Nb) As appropriate As appropriate
Titanium(Ti) As appropriate As appropriate

Other equivalent /nearest alloy standards
SS304 SS316
DIN 1.4312, 1.4301
1.4305, 1.4303
1.4309
1.4401, 1.4404
1.4581, 1.4585
1.4401, 1.4436
BS 304-S11, S 15
S16, S17, S31
C25
316- S11, S13, S14,
S17, S19, S31

Alloys contain Mn, Si, S, P, Fe and other trace elements.

Note: The IS 9301: 1990 recommends stainless steel to be used for connecting and plunger rods is equal to AISI 410 gradewith Cr (11.0%-13%), Ni (1%) and C (0.12%-0.25%) where pH value of ground water is higher than 5.5.

Stainless steels options for application in deep well hand pump components

SS 301 SS 304 SS 304 Ti SS 304 Nb SS 316 SS 316 Ti SS 316 Nb
Chromium(Cr) 16.0-18.0 18.0-20.0 18.0-20.0 18.0-20.0 19.0-21.0 19.0-21.0 19.0-21.0
Nickel(Ni) 6.0-8.0 8.0-11.0 8.0-11.0 8.0-11.0 9.0-12.0 9.0-12.0 9.0-12.0
Molybdenum(Mo) 0.50 max 0.50 max 0.50 max 0.50 max 2.0-3.0 2.0-3.0 2.0-3.0
Titanium(Ti) Yes Yes
Niobium(Nb) Yes Yes

Note: The table above indicates key elemental percentage composition ranges of corrosion resistant stainless-steel cast components. Conditions apply. Metallurgical casting feasibility of an alloy depends on its geometry and dimensions.

Increasing Resistance to- General corrosion, erosion corrosion, crevice corrosion and pitting corrosion

Increasing improved physical properties, improved weld-ability and capability to withstand higher pH value of water

Increasing ability to combat and withstand – grain segregation, carbide precipitation,stress corrosion cracking, corrosion fatigue, inter granular corrosion

ACME® India Mark Deep Well Hand Pump (DWHP) Product Literature

1 ACME® India Mark II Stainless Steel Deep Well Hand Pump (DWHP) System
2 ACME® India Mark II Stainless Steel Deep Well Hand Pump (DWHP) System- Pump Cylinder
3 ACME® India Mark II Stainless Steel Deep Well Hand Pump (DWHP) System-
Pump Cylinder Components
4 Why Choose Stainless Steel Components for Deep Well Hand Pump (DWHP)- India Mark & AFRIDEV 5- Good Reasons
5 ACME® India Mark VLOM 50 & VLOM 60 Stainless Steel Deep Well Hand Pump (DWHP)
6 ACME® India Mark Extra Deep Well (EDW) Stainless Steel Deep Well Hand Pump (DWHP)
7 ACME® Proflow 77 – 3 inch Piston Pump – DWHP
8 ACME® Stainless Steel SS 304, SS 316 Deep Well Hand Pump (DWHP) Products-
Connecting Rods, Riser Mains, Pipe Centralizers, Pipe Couplers
9 Riser Main Connectors in SS – 1.25 inch and 2.50 inch Riser Main System
10 T-Foundation Bolts and Flanges in Stainless Steel for India Mark, AFRIDEV DWHP
11 D-1 Special Tool Set ACME® India Mark II DWHP
12 D-3 Special Installation Tools for VLOM 50 and VLOM 65 ACME® India Mark II DWHP
13 D-4 Standard Maintenance Tools for VLOM 50 and VLOM 65 ACME® India Mark II DWHP
14 Phasing Out of Poison Plastic PVC in Deep Well Hand Pump (DWHP)-Use Recylable uPVC or Stainless Steel Instead