Lined Safety Relief Valve

Safe-LineTM , Fully FEP/PFA Lined Safety/Pressure Relief Valves are manufactured with high accuracy to assure the performance of the valve, over protection for unfired pressure vessels/equipments and plant system from dangerously high pressure used with highly corrosive liquid, gases & vapors.

 

Size Range: 150 x 200

Set Pressure Range: 20 bar max. and Temperature 200 Deg. C

  • Cross-Section Drawing
  • Features & Benefits
  • Construction
  • Dimension (MM) & Test Pressure
  • Lining Specification
  • Standard Specifications
  • Applicable Code & Standards
  • Applications
SR.NO. PART NAME MATERIAL
1 BODY ASTM A216 GR.WCB + PFA/FEP LINING
2 BONNET ASTM A216 GR.WCB
3 CAP ASTM A216 GR.WCB
4 NOZZLE CFT/GFT
5 NOZZLE RING CFT/GFT
6 DISC CFT/GFT
7 REACTION HOOD CFT/GFT
8 GUIDE ASTM A351 GR.CF8
9 STEM SS 410
10 LOCK SCREW HASTELLOY C
11 SETTING SPRING CARBON STEEL
12 SPRING WASHER M.S
13 ADJUSTING SCREW SS 410
14 ADJ. SCREW NUT SS 410
15 STUDS & NUTS ASTM A193 GR.B7/ASTM A194 GR.2H
16 BOTTOM COVER ASTM A216 GR.WCB + PFA/FEP LINING
17 THRUST BEARING HARDCROME IRON
18 SEAT SS 304
19 BELLOWS PTFE
20 GASKET PTFE

High Performance

Safe and more reliable in corrosive services

Standard Design

Most economical & leadtime advantage over valves made of special alloy steel like hastelloy, titanium etc.

Cast Ductile Iron Body

with corrosion resistant PU paint with Stainless Steel Fastners

PTFE Balance Bellows

Hermetic seal to valve bonnet and atmosphere, cancels out the effect of superimposed (constant and veriable) and built up back pressure.

High Discharge Coefficient

for high flow rate

Liner Locking

Fully locked in, unpigmented FEP/PFA uniform lining throughout body and face area helps to prevent blowout or collapse of the liner under full vacuum/high pressure

  • Direct acting, spring loaded PTFE balance bellows safety relief valve with angle type valve body
  • Standard safety valve, design and performance complying with the requirements of ASME Section VIII
  • Opening characteristic similar to full lift and streamline-designed flow parts result in high discharge coefficients , thus achieving high discharge capacity
  • At very low pressures almost consistent performance
  • Resets and shuts off the pipeline/equipments after operation

DIMENSION(MM)-150#

SIZE (NB) A B C
25X50 115 130 350
40x50 120 150 365
40X65 124 150 435
40X80 124 150 435
50X80 124 149 450
65X100 143 170 450
80X100 162 190 465
100X150 229 230 700

TEST PRESSURE

BODY (HYDRO) 20 Kg/cm2g (Before Lining)
SEAT (HYDRO) 10 Kg/cm2g (Before Lining)
SEAT (PNEUMATIC) 07 Kg/cm2g
TYPE PFA/FEP
SPARK TEST 15 K.V D.C
THICKNESS 3.0 MM OVER ALL WETTED PARTS
  • Direct acting, spring loaded, full lift safety relief valve with angle discharge
  • ANSI, #150 Inlet & Outlet RF Flanges
  • PTFE Balance Bellows design
  • Compatiable with API 526 Center to Face line dimensions
  • Sizing & Selection:- API 520: PART I
  • Design :- API 526
  • Testing Standard:- API 527
  • ASME Sec. VIII Div. I
  • Flange Drilling: ANSI / BS / DIN / JIS
  • Flange Rating: 150# & 300#
  • Safeguarding of pressure vessels and plant systems against overpressure. Set pressure up to 15 Kg & max. temperature 180°C
  • Corrosive media, where metallic materials can not reach an adequate service life or where special metals cause high costs
  • Used where over protection for unfired pressure vessels/equipment and plant system from dangerously high pressure used with highly corrosive, gases & vapors.