DI050 Ductile Iron Diaphragm Type Pressure Reducing Valve PN-20 (Flanged)

di050
  • Item Code: DI0050
  • Pressure Rating: PN-20
  • Testing Standard: BSEN 12266 Part-1
  • Size Range: 25mm to 150mm
  • Product Standard: Mfg. Standard

Suitable For

di050

Material Specification

FOR SIZE UPTO 50mm

P. NO. NAME OF PART MATERIAL SPECIFICATION
1 ADJUSTING SCREW STAINLESS STEEL TYPE 410
2 LOCK NUT DUCTILE IRON ASTM A395
3 SPRING CHAMBER CAST IRON BSEN 1561 EN GJL250
4 UPPER SPRING DISC DUCTILE IRON ASTM A395
5 DIAPHRAGM SPRING (CADMIUM PLATED) SPRING STEEL BS 910 EN-44
6 COVER CAST IRON BSEN 1561 EN GJL250
7 LOWER SPRING DISC DUCTILE IRON ASTM A395
8 DIAPHRAGM NEOPRENE RUBBER  
9 RING NEOPRENE RUBBER  
10 CAP DUCTILE IRON ASTM A395
11 STEM STAINLESS STEEL ASTM A276 TYPE 410
12 BODY DUCTILE IRON ASTM A395
13 DISC NEOPRENE RUBBER  
14 DISC HOLDER DUCTILE IRON ASTM A395
15 SPRING (CADMIUM PLATED) CARBON STEEL ------
16 BOTTOM COVER DUCTILE IRON ASTM A395
17 GASKET C.N.A.F.  
18 BOTTOM COVER DUCTILE IRON ASTM A395
19 STUD & NUT CARBON STEEL BS 916
20 O-RING NEOPRENE RUBBER  

FOR SIZE UPTO 65mm TO 125mm

S. NO. NAME OF PART MATERIAL SPECIFICATION
1 ADJUSTING SCREW STAINLESS STEEL TYPE 410
2 LOCK NUT DUCTILE IRON ASTM A395
3 COVER DUCTILE IRON ASTM A395
4 GASKET C.N.A.F.  
5 UPPER SPRING DISC STAINLESS STEEL TYPE 304
6 DIAPHRAGM SPRING (CADMIUM PLATED) SPRING STEEL BS 910 EN-44
7 SPRING CHAMBER CAST IRON / DUCTILE IRON BSEN 1561 EN GJL250 / ASTM A395
8 LOWER SPRING DISC STAINLESS STEEL TYPE 304
9 DIAPHRAGM DISC DUCTILE IRON / STAINLESS STEEL ------
10 DIAPHRAGM NEOPRENE RUBBER  
11 DIAPHRAGM HOLDER DUCTILE IRON ASTM A395
12 STEM STAINLESS STEEL ASTM A276 TYPE 410
13 POSITION LINER STAINLESS STEEL TYPE 304
14 O-RING NEOPRENE RUBBER  
15 BODY DUCTILE IRON ASTM A395
16 UPPER DISC HOLDER DUCTILE IRON ASTM A395
17 BODY SEAT RING F.S.S. ASTM A182 Gr. F304
18 DISC NEOPRENE RUBBER  
19 DISC HOLDER DUCTILE IRON ASTM A395
20 BUSH STAINLESS STEEL TYPE 416
21 STUDS & NUTS CARBON STEEL ------
22 LOCKING SCREW STEEL ------
23 BOLTS & NUTS CARBON STEEL BS 916
24 BOLTS & UTS CARBON STEEL BS 916
25 GASKET C.N.A.F.  
26 BOTTOM COVER DUCTILE IRON ASTM A395

FOR SIZE 150mm

S. NO. NAME OF PART MATERIAL SPECIFICATION
1 ADJUSTING SCREW STAINLESS STEEL TYPE 410
2 LOCK NUT DUCTILE IRON ASTM A395
3 BUSH STAINLESS STEEL TYPE 416
4 COVER DUCTILE IRON ASTM A395
5 GASKET C.N.A.F.  
6 UPPER SPRING DISC STAINLESS STEEL TYPE 304
7 DIAPHRAGM SPRING (CADMIUM PLATED) SPRING STEEL BS 910 EN-44
8 SPRING CHAMBER CAST IRON / DUCTILE IRON BSEN 1561 EN GJL250 / ASTM A395
9 PIN STAINLESS STEEL TYPE 410
10 LOWER SPRING DISC STAINLESS STEEL TYPE 304
11 GASKET C.N.A.F.  
12 O-RING NEOPRENE RUBBER  
13 PISTON DUCTILE IRON  
14 LINER STAINLESS STEEL TYPE 304
15 O-RING NEOPRENE RUBBER  
16 BODY DUCTILE IRON ASTM A395
17 DISC RETAINER DUCTILE IRON ASTM A395
18 STEM STAINLESS STEEL ASTM A276 TYPE 410
19 BODY SEAT RING F.S.S. ASTM A182 Gr. F304
20 DISC NEOPRENE RUBBER  
21 DISC HOLDER DUCTILE IRON ASTM A395
22 BOLTS & NUTS CARBON STEEL BS 916
23 BOLTS & NUTS CARBON STEEL BS 916
24 SPACER DUCTILE IRON / STAINLESS STEEL ASTM A395 / TYPE 304
25 GUIDE DUCTILE IRON / STAINLESS STEEL ASTM A395 / TYPE 304
26 GASKET C.N.A.F.  
27 BOLTS & NUTS CARBON STEEL BS 916
28 BOTTOM COVER DUCTILE IRON ASTM A395
29 O-RING NEOPRENE RUBBER  
di050

Dimensional Data

di050
 
SIZE (mm) 25 32 40 50
L±2 160 180 195 230
~H 280 340 350 440
∅b 25 32 40 50
∅D 120.7 133.5 139.7 165.1
T 11.1 11.1 12.7 12.7
K 87.3 98.4 104.8 127
n 4 4 4 8
d 17.5 17.5 17.5 17.5
di050
 
SIZE (mm) 65 80 100 125
L±2 235 286 308 375
~H 426 505 648 762
∅b 63.5 80 101.6 125
∅D 184.2 203.2 228.6 279.5
T 14.3 16 19.1 22.2
K 146.1 165.1 190.5 235
n 8 8 8 8
d 17.5 17.5 17.5 22.2
di050
 
SIZE (mm) 150
L±2 404
~H 630
∅b 150
∅D 305
T 25.5
K 260.4
n 12
d 22.2

Principle Features

INTRODUCTION

Leader Diaphragm Type Pressure Reducing Valves automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate and/or varying inlet pressure. This valve is an accurate, diaphragm regulator capable of holding downstream pressure to a pre-determined limit. No matter how the flow rate or pressure before the valve fluctuates and changes the valve can reduce the pre-valve high pressure to the post-valve low pressure and keep it stable, even if the valve does not have user water. It can keep the outlet pressure stable.

  • Body made of sturdy construction in Ductile Iron.
  • SS304 internals offers long life.
  • Designed to suit precise applications requiring accurate pressure rating, pressure drop being less.
  • Top & bottom guided stem and diaphragm assembly for long life and reliable performance.
  • Preferred horizontal installation for better performance, can be installed in vertical position.
  • Performs perfect modulation in variable flows.
  • No external source of energy required.
  • Very rugged type of construction leads to low damages and self-operating in nature.
  • Maximum inlet pressure range 17.24 Kg/Cm2.
  • Set Pressure Range 0.6 Kg/Cm2 to 6 Kg/Cm2.
  • Flanged ends as per BS:10 Table ’H’ (FF).

END CONNECTION

  • Flanges as per BS:10 Table ’H’ (FF), Drilled.
  • Flange drilling as per other standards also available upon request.

UTILISATION & SERVICE

  • “LEADER” Ductile Iron Pressure Reducing Valves are suitable for above-ground installations.
  • Best suited for Water & Air application.

WORKING PRESSURE

  • Maximum Working Pressure: 17.24 Bar.
  • See Pressure / Temperature Diagram.

TEMPERATURE LIMITS

  • Maximum Working Temperature: 120°C.
  • See Pressure / Temperature Diagram.

TEST PRESSURE (Hydrostatic)

Rating PN-20
Body (Hyd.) 30 Bar

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