DEAS 1134 : 2023  
ICS nn.nnn.nn  
 
© EAC 20 23                                                                                                                              First Edition 20 23 DRAFT EAST AFRICAN STANDARD  
Firefighting equipment — Components of underground and 
above  ground hydrant systems — Specification  
EAST AFRICAN COMMUNITY  
 DEAS nnnn -n: yyyy  
iii © EAC 2023 – All rights reserved  
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Violators may be prosecute d. DEAS 1134 : 2023 
© EAC 2023 – All rights reserved  iv 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  vi 
1 Scope  ................................ ................................ ................................ ................................ ...................... 1 
2 Normative references  ................................ ................................ ................................ ............................ 1 
3 Terms and definitions  ................................ ................................ ................................ ........................... 1 
4 Type components  ................................ ................................ ................................ ................................ ..1 
4.1 Underground type components  ................................ ................................ ................................ ........... 1 
4.2 Above -ground type components  ................................ ................................ ................................ ......... 2 
5 Materials for components  ................................ ................................ ................................ ..................... 2 
5.1 General  ................................ ................................ ................................ ................................ .................... 2 
5.2 Cast iron  ................................ ................................ ................................ ................................ ................. 3 
5.3 Brass pipe  ................................ ................................ ................................ ................................ ............... 3 
5.4 Rubber components  ................................ ................................ ................................ .............................. 3 
5.4.1  For seat washers ................................ ................................ ................................ ................................ ....3 
5.4.2  For sealling washers and joint r ings ................................ ................................ ................................ ...3 
5.5 Copper alloys  ................................ ................................ ................................ ................................ ......... 3 
5.6 Other alloys  ................................ ................................ ................................ ................................ ............ 3 
6 Constructional r equirements  ................................ ................................ ................................ ................ 3 
6.1 Underground type components  ................................ ................................ ................................ ........... 3 
6.1.1  Underground hydrant valves  ................................ ................................ ................................ ................ 3 
6.1.2  Gate valve outlet bends (see Figure 2)  ................................ ................................ ................................ 5 
6.1.3  Underground hydrant valve outlet connections  ................................ ................................ ................. 6 
6.1.4  Portable standpipes (see figure 6)  ................................ ................................ ................................ .......9 
6.2 Above -ground type components  ................................ ................................ ................................ ...... 11 
6.2.1  Above -ground hydrant valves  ................................ ................................ ................................ ...........  11 
6.2.2  Separate hydrant valve outlet coupling  ................................ ................................ ...........................  15 
6.2.3  Hydrant valve outlet adapter  ................................ ................................ ................................ .............  15 
6.3 General components  ................................ ................................ ................................ ..........................  15 
6.3.1  Blank cap  ................................ ................................ ................................ ................................ .............  15 
6.3.2  Bolts and nuts  ................................ ................................ ................................ ................................ ..... 15 
6.4 Finish  ................................ ................................ ................................ ................................ ...................  15 
6.5 Burst resistance  ................................ ................................ ................................ ................................ .. 16 
7 Performance requirements  ................................ ................................ ................................ ................  16 
7.1 Capacity of valves ................................ ................................ ................................ ...............................  16 
7.2 Resistance to hydraulic pressure  ................................ ................................ ................................ ..... 16 
8 Marking  ................................ ................................ ................................ ................................ ................  16 
9 Sampling and compliance with the specification  ................................ ................................ ............  16 
9.1 Sampling  ................................ ................................ ................................ ................................ ..............  16 
9.1.1  Sample for inspection  ................................ ................................ ................................ ........................  16 
9.1.2  Sample for testing ................................ ................................ ................................ ...............................  17 
9.2 Compliance with the specification  ................................ ................................ ................................ .... 17 
10 Inspection and methods of test  ................................ ................................ ................................ .........  17 
10.1  Inspection  ................................ ................................ ................................ ................................ ............  17 
10.2  Capacity test for valves  ................................ ................................ ................................ ......................  17 
10.3  Pressure test for components  ................................ ................................ ................................ ...........  17 
10.3.1  All components  ................................ ................................ ................................ ................................ ... 17 
10.3.2  Valves  ................................ ................................ ................................ ................................ ...................  18 
10.4  Burst test for above -ground hydrant valves  ................................ ................................ ....................  18  
v © EAC 2023  – All rights reserved  
 10.4.1  Apparatus  ................................ ................................ ................................ ................................ .............  18 
10.4.2  Procedure  ................................ ................................ ................................ ................................ .............  18 
Bibliography  ................................ ................................ ................................ ................................ ......................  19 
 DEAS 1134 : 2023 
© EAC 2023 – All rights reserved  iv 
 Foreword  
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of prod ucts and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
The Community has established an East  African Standards Committee  (EASC)  mandated to develop and 
issue East African Standards  (EAS) . The Committee is composed of representatives of the National 
Standards Bodies in Partner States, together with the representatives from the public and private s ector 
organizations  in the community .  
East African Standards are developed through  Technical Committees that are representative of key 
stakeholders including government, academia, consumer groups, private sector and other interested parties. 
Draft East Af rican Standards are circulated to stakeholders through the National Standards Bodies in the 
Partner States. The comments received are discussed and incorporated before finalization of standards, in 
accordance with the Principles and procedures for developm ent of East African Standards.  
East African Standards are subject to review, to keep pace with technological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are  implementing .  
The committee responsible  for this document is Technical Committee EASC /TC 039, Mechanical engineering 
and metallur gy. 
Attention is drawn to the possibility that some of the elements of this document may be subject of patent 
rights. EAC sha ll not be held responsible for identifying any or all such patent rights.  
 DRAFT EAST AFRICAN STANDARD  DEAS 1134 : 2023 
 
1 © EAC 2023 – All rights reserved  
 Firefighting equipment — Components of underground and 
aboveground hydrant systems — Specification  
1 Scope  
This Draft East Africa Standard specif ies requirement s, sampling procedur es, test methods of major 
components of underground and aboveground hydrant systems for firefighting . 
2 Normative references  
There are no normative references in this document.  
3 Terms and definitions  
For the purposes of this document, the following terms and definitions apply.  
ISO and IEC maintain terminological databases for use in standardization at the following addresses:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
3.1  
defective  
a componen t that fails in one or more respects to comply with the relevant requirements of the specification  
3.2  
lot 
not less than 15 and not more than 600 components of the same type, design, and material(s), from one 
manufacturer, submitted at any one time for in spection and testing  
4 Type components  
4.1 Underground type components  
Underground type components shall be of one (or more) of the following types:  
a) underground hydrant valves;  
b) gate valve outlet bends;  
c) underground hydrant valve outlet connections;  and 
d) portable standpipes.  
NOTE  An underground hydrant assembly requires one of each of the major components listed in ( a), (b), and (d), 
when relevant.   
© EAC 2023 – All rights reserved  2 
 4.2 Above -ground type components  
Above -ground type components shall be of one (or more) of the following types, as specified by the 
purchaser:  
a) above-ground hydrant valves;  
b) above -ground hydrant valve outlet connections;  and 
c) hydrant valve outlet adapters.  
NOTE  An above ground hydrant assembly requires one of each of the above major components.  
5 Materials for componen ts 
5.1 General  
The material(s) of each component shall be as shown in Table 1.  
Table 1 — Materials for components  
Component  Material  
Above -ground type  
Blank caps  Brass pressings, bronze, malleable iron, or aluminium alloy  
Body  Gun metal or aluminium all oy 
Handwheel  Bronze, cast iron, malleable iron, or aluminium alloy  
Handwheel nut  Gun metal or aluminium alloy  
Seat washer  Rubber (reinforced)  
Spindle  Gun metal, stainless steel, or bronze  
Spindle nut  Gun metal, brass bar, or manganese bronze  
Tamperpr oof key type handle  Bronze, mild steel forging, steel fabrication, or aluminium 
alloy 
Hydrant valve outlet connections  Bronze, cast iron or aluminium alloy  
Hydrant valve outlet adapters  Bronze, gun metal, or aluminium alloy  
underground type   
Blank caps  Cast iron or aluminium alloy  
Body  Cast iron or aluminium alloy  
Seat washer  Rubber (reinforced)  
Spindle  Bronze or stainless steel  
Spindle nut  Gun metal or manganese bronze  
Hydrant valve outlet connections  Cast iron, gun metal, brass pressings, or alum inium alloy  
Portable standpipes  Copper, brass, aluminium, mild steel, or aluminium alloy  
Inlet and outlet connections  Cast iron, bronze, or aluminium alloy  
Sealing rings  Rubber  
  
3 © EAC 2023  – All rights reserved  
 5.2 Cast iron  
Cast iron shall not have blowholes or other imperfections th at may hinder proper performance.  
5.3 Brass pipe  
Brass tubing shall be of CuZn37 composition.  
5.4 Rubber components  
The material used for rubber components shall be of a quality at least equal to:  
5.4.1 For seat washers  
Chloroprene or butyl rubber reinforc ed with at least five plies of nylon or cotton that are distinctly separate 
from each other, each strand of reinforcing material being totally embedded in, and completely bonded to the 
rubber compound.  
5.4.2 For sealling washers and joint rings  
These shall  be made from chloroprene or butyl rubber.  
5.5 Copper alloys  
Copper alloys shall  be of the following types, as appropriate : 
a) gun metal  ; 
b) extruded brass bar;  
c) hot brass pressings; and  
d) manganese bronze stampings.  
5.6 Other alloys  
Other alloys shall be of accep table quality and suitable for the purposes for which they are intended.  
6 Constructional requirements  
6.1 Underground type components  
6.1.1 Underground hydrant valves  
An underground hydrant valve shall open in anti - clockwise direction, and shall be of on e of the following 
types:  
a) gate valve ; 
A gate valve of nominal size 80 mm with non -rising spindles.  
b) screw -down valves ; 
A valve as generally shown in Figure. 1 and constructed as follows:   
© EAC 2023 – All rights reserved  4 
 i. The gland or cover assembly, or both, shall have a flange that is bol ted to a horizontal mating 
flange on the valve body and shall be so designed that, when the gland or cover assembly, or 
both, are removed, there is full access to all the interior parts of the valve, while the casing 
remains fixed in po sition;  
ii. The inlet sh all have a bore of 70 mm and shall be flanged as shown in Figure 1;  
iii. The outlet shall have a bore of 70 mm and shall be flanged to mate with the flange of the 
underground outlet connection specified mate with the flange of the underground outle t 
connection specified in 5.1.3;  
iv. The dimensions of the spindle and valve cap shall comply with those given f or the spindle and 
cap of 65 mm; and  
v. The seating face in the casing shall be machined and shall be of width at least 10 mm and 
raised to a height of at least 2 m m above the surrounding body material .  
5 © EAC 2023  – All rights reserved  
 
  
Figure 1 — Underground type II hydrant  
6.1.2 Gate valve outlet bends (see Figure 2)  
The inlet and outlet of an outlet bend shall be flanged to suit the flange of the gate valve [see 5.1. 1(a)] and the 
flange of the outlet connection specified in 5.1.3 respectively.   
© EAC 2023 – All rights reserved  6 
 
  
Figure 2 — Duck foot type I fire hydrant  
6.1.3 Underground hydrant valve outlet connections  
The inlet of an outlet connection shall be furnished w ith a fixed or loose flange and the outlet shall be of the 
Vee-thread, or round thread type as shown in the appropriate of Figures 3, 4 and 5.   
7 © EAC 2023  – All rights reserved  
 
  
Figure 3 — Stand pipe adaptor (above)  and stand pipe base below   
© EAC 2023 – All rights reserved  8 
 
  
Figure 4 — Stand pipe adaptor (London round thread) — above  and round thread outlet (below)   
9 © EAC 2023  – All rights reserved  
 
  
Figure 5 — Basic form of round threads  
6.1.4 Portable standpipes (see figure 6)  
6.1.4.1  General  
A standpipe shall be of nominal bore at least 6 5 mm and thickness at least 2 mm and shall have inlet and 
outlet connections fixed to th e pipe in an acceptable manner.  The inlet connection shall be of screw type and 
of design such as to mate the appropriate outlet conne ction in 5. 1.3. The outlet connection shall be as 
specified in 5.1.4.2 (b) . 
6.1.4.2  Screw -type 
a) inlet connection  
The thread on a screw type inlet shall be a 2 -threads per inch round thread or a 5 -threads per inch Whitworth 
thread, as specified by the purchaser and the dimensions of the thread shall comply with the appropriate 
values given in Tables 2 and 3.  Figures 4, 5, 6 and 7 are illustrations.  
  
© EAC 2023 – All rights reserved  10 
 Figure 6 — Outlet connection/Coupling  
 
Figure 7 — Portable stand pipe  
Table 2 — Dimensions (in mm) of round thread (b asic form as in Figure 7 ) 
1 2 3 
Major diameter  Male thread  Female thread  
83.00 + 0.000  
- 0.50 84.5 + 0.50  
- 0.000  
Minor diameter  68.00 max.  70.5 + 0.50  
- 0.000  
  
11 © EAC 2023  – All rights reserved  
 Table 3 — Dimensions (in mm) of vee -thread (basic form is whit worth 5 -threads per inch  
1 2 3 
Major diameter  Male thread  Female thread  
83.00 + 0.000  
- 0.50 83.50 + 0.50  
- 0.000  
Effective diameter  79.50 + 0.000  
- 0.50 80.00 + 0.500  
- 0.000  
Minor diameter  77.00 + 0.000  
- 0.50 77.00 + 0.50  
- 0.000  
 
b) outlet connection  
The outlet connection shall consist of one or two 65 -mm instantaneous connections (the relevant dimensions 
of which comply with those given in Figure 8) and shall be fitted to the standpipe by means of either a female 
thread of nominal size 65 mm.  
6.2 Above -ground type componen ts 
6.2.1 Above -ground hydrant valves  
The direction of opening for an above -ground hydrant valve shall b e anti -clockwise and shall be as shown in 
Figure  10. 
6.2.1.1  Valve body  
The valve body shall have the following;  
a) the inlet of the valve shall be of nomin al size 80 mm an d shall be flanged or threaded;  
b) the outlet of the valve shall be of the upwards oblique, downwards oblique, right angle, or straight -
through pattern (see Figure 9);  
c) the outlet shall have a bore of at least 65 mm and shall be furnished with one of the following 
connections:  
i. a 65-mm instantaneous connection integrally cast with the body; or  
ii. a separate 65 -mm instantaneous coupling or other connection, as relevant (see 5.2.2), screwed 
onto the body (as shown in Figure 8).   
© EAC 2023 – All rights reserved  12 
 
  
Figure 8 — Sheathed spindle  
 
 
Figure 9 — Open -type spindle   
13 © EAC 2023  – All rights reserved  
 
  
Figure 10 — Typical outlet connections for above ground hydrant valve  
6.2.1.2  Valve spindle  
For a fixed hand wheel, the top of th e spindle shall be plain, and for a tamperproof key type handle, it shall be 
sheathed. Sheathed valve spindles shall be as shown in Figure 8 and of the open type (as shown in Figure 9) 
or the shielded type.  The design of the spindle thread shall be as foll ows: 
a) the root diameter shall be at least 19 mm; and   
© EAC 2023 – All rights reserved  14 
 b) the form shall be either trapezoidal or acme.  
 
Figure 11 — Hydrant outlet adaptor  
6.2.1.3  Valve clack  
The clack shall be of a swivel type and shall be fixed to the spindle in an acceptable manner.  
6.2.1.4 Valve gland  
The gland shall be designed for use with packing rings or “O” rings.  
6.2.1.5  Operating device  
The operating device shall be of the fixed wheel type (with rim and spokes and of outside diameter 150 mm ± 
10 mm) in Figure 12) and suitable to acc ept the appropriate spindle (see clause 5.2.1.2) .  
15 © EAC 2023  – All rights reserved  
 
 
Figure 12 — Tamper proof type handle  
6.2.2 Separate hydrant valve outlet coupling  
A separate hydrant valve coupling shall have a female threaded inlet to suit the screwing of the hydrant valve 
outlet. The  outlet of the coupling shall be of the 65 mm instantaneous type.  
6.2.3 Hydrant valve outlet adapter  
The adapter for a hydrant valve shall have an inlet of 65 mm instantaneous outlet connection . 
6.3 General components  
6.3.1 Blank cap  
A blank cap (male or f emale, as relevant) shall, when so specified by the purchaser, be furnished for each 
outlet, and the cap shall be fixed to the component by means of a chain.  
6.3.2 Bolts and nuts  
Except for special bolts and nuts, the design of which shall be such that the y will ensure sturdy, watertight, 
and neat joint(s), bolts and nuts.  
6.4 Finish  
All metal components shall be free from burrs, pits, sharp edges, blow holes, and plugged blow holes, and the  
© EAC 2023 – All rights reserved  16 
 bores shall have a smooth finish.  Feather edges (e.g. on round th reads) shall have been removed.  The 
external surface of an above -ground hydrant valve shall be acceptably smooth, clean, neat and free of scour 
marks and, when so required, polished.  
6.5 Burst resistance  
When an above -ground hydrant valve is tested in acc ordance with 9.4, it shall not burst or suffer such damage 
as would impair its normal operation.  
7 Performance requirements  
7.1 Capacity of valves  
When tested in accordance with 9.2 at an inlet pressure of 150 kPa, a hydrant valve shall deliver at least 
1200Lof water/min . 
7.2 Resistance to hydraulic pressure  
When a component is tested in accordance with 9.3 a t a water pressure of 2 000 kPa:  
a) the body of the component shall withstand the water pressure without leaking, distorting, or breaking;  
b) in the case of a valve : 
i. there shall be no sticking; jamming, or binding of the spindle; and  
ii. the seat shall not leak or weep.  
8 Marking  
8.1 Each component shall be legibly marked by stamping or embossing with the manufacturer’s name, 
trade name, or trade mark.  
8.2 The dir ection of opening of an above -ground hydrant valve shall be marked (with words and arrows 
either indented 2 mm or raised 1 mm) on the surface of the hand wheel or handle (as relevant).  
9 Sampling and compliance with the specification  
NOTE  This clause appli es to the sampling for inspection and testing before acceptance or rejection of single lots 
(consignments) in cases where no information about the implementation of quality control or testing during manufacture is 
available to help in assessing the quality  of the lot.  
9.1 Sampling  
The following sampling procedure shall be applied in determining whether a lot complies with the relevant 
requirements of the specification.  The samples so taken shall be deemed to represent the lot.  
9.1.1 Sample for inspection  
From the lot take at random the number of components shown in Table 4 Column 2 relative to the appropriate 
lot size shown in Column 1.   
17 © EAC 2023  – All rights reserved  
 9.1.2  Sample for testing  
After inspection (see 9.1) of the sample drawn in accordance with 8.1.1, take from it at random t he appropriate 
number of components shown in Column 4 of Table 4.  
Table 4 — Sample sizes and acceptance number  
1 2 3 4 
Lot sizes,  
Components  Sample for inspection  Sample for testing, 
components  Sample size, 
components  Acceptance number  
15-25 
26-100 
101-200 
201-600 5 
8 
11 
18 0 
0 
1 
2 1 
2 
3 
4 
 
9.2 Compliance with the specification  
The lot shall be deemed to comply with the relevant requirements of the specification if:  
a) after inspection of the sample taken in accordance with 8.1.1, the number of defective s found does 
not exceed the appropriate acceptance number given in Column 3 of Table 4 ; and 
b) after testing of the sample taken in accordance with 8.1.2, no defective is found.  
10 Inspection and methods of test  
10.1 Inspection  
Inspect and measure the compone nts taken in accordance with 8.1.1 for compliance with all the relevant 
requirements of Clauses 3, 4, 5, and 7, compliance with which is not assessed by the tests given in 9.2 and 
9.3. 
10.2 Capacity test for valves  
Connect the inlet of the valve to a suita ble water supply and, with the valve in the open position, increase the 
inlet water pressure to 150 kPa. Measure the rate of delivery and check for compliance with 6.1.  
10.3 Pressure test for components  
Connect the inlet of the compon ent to a suitable wate r supply.  With, in the case of valves, the gate or clack 
(as relevant) in the open position, fill the component with water ensuring that all air is expelled. Blank off the 
outlet, apply a hydraulic pressure of 2 000 kPa, maintain the pressure for 5 min and  proceed as follows:  
10.3.1 All components  
Inspect the body for compliance with the requirements of 6.2(a).   
© EAC 2023 – All rights reserved  18 
 10.3.2  Valves  
10.3.2.1  Without reducing the pressure close and open the valve and check the spindle for compliance 
with the requirements of 6.2(b) ,(i). 
10.3.2.2  Completely close the valve by hand and, without reducing the compliance with the requirements 
of 6.2(b)(ii) . 
10.4 Burst test for above -ground hydrant valves  
10.4.1 Apparatus  
a) A hydraulic pump, capable of producing a static pressure of 5 000 kPa. 
b) A suitable  pressure gauge.  
c) An appropriately sized male component of a hose coupling that is blanked off on its tail.  
10.4.2  Procedure  
Properly assemble the male component to the outlet of the valve under test and  connect the inlet to the pump.  
Fill the valve and increase the water pressure to 5 000 kPa, and ma intain this pressure for 5 min.  Inspect the 
valve for compliance with the requirements .  
19 © EAC 2023  – All rights reserved  
 Bibliography  
KS 2175:  2015 , Firefighting equipment — Components of underground and aboveground hydrant  systems — 
Specification  
 DEAS nnnn -n: 2023    
 
© EAC 2023  – All rights reserved