Cast Steel Spring Loaded Full Lift Single Post Safety Valve

Description

Neta Cast Steel Spring Loaded, Full Lift, Single Post Safety Valve.
18/8% Cr./Ni (AISI-304) / Monel (Ni Cu Alloy) Seat and Body Ring and 18/8% Cr./ Ni/
(AISI-304) Stem.
Inlet Flange to Class-300 as per ASME B16.5.
Outlet Flange to Class-150 as per ASME B16.5.

Test Pressure

Max. BOP : 250 PSIG
Max. Working Temperature : 425°C
Test Pressure : 500 PSIG(Hyd.)

Design Features

Full Lift is achieved by rapid opening within an over pressure of 5% of the Set Pressure.
Each Safety Valve is provided with an easing lever.
To avoid unauthorised alteration of set pressure each Valve is provided with adjusting screw and checknut, concealed under a cap with Pad Lock .

Certification

IBR Test Certificate in FORM III-C duly signed by the Director of Boilers, Punjab is provided.

Application

Steam

HSN

84818010

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PNo.	Part	Nos.	Material	Standard
1	Cap	1	Cast Iron	IBR 86 to 93 Gr.A
2	Locking Pin	1	Bronze	IBR 282[a][iv] Gr.B
3	Stem	1	S.S. 18/8% Cr./Ni.	AISI – 304
4	Adjusting Screw	1	Bronze	IBR 282[a][iv] Gr.B
5	Easing Lever	1	Cast Iron	IBR 86 to 93 Gr.A
6	Gasket	2	C.A.F. (Graphited)	IS:2712
7	Disc Guide	1	Bronze	IBR 282[a][iv] Gr.B
8	Locking Screw	1	M.S.	IS:1367
9	Blow Down Ring	1	Bronze	IBR 282[a][iv] Gr.B
10	Body Seat Ring	1	S.S. 18/8% Cr./Ni./ Lumina	AISI – 304 / Ni. Cu. Alloy
11	Body	1	Cast Steel	ASTM A216 Gr.WCB
12	Pad Lock	1	M.S.	–
13	Check Nut	1	Bronze	IBR 282[a][iv] Gr.B
14	Bush	1	Bronze	IBR 282[a][iv] Gr.B
15	Upper Spring Disc	1	Bronze / S.S. 13%Cr.	IBR 282[a][iv] Gr.B / ASTM A182 Gr. F6a / AISI – 410
16	Spring	1	Carbon Steel	IBR 307(a)
17	Spring Chamber	1	Cast Steel	ASTM A216 Gr.WCB
18	Lower Spring Disc	1	Bronze / S.S. 13%Cr.	IBR 282[a][iv] Gr.B / ASTM A182 Gr. F6a / AISI – 410
19	Studs & Nuts	To Suit	Alloy Steel / H.T. Steel	ASTM A193 Gr. B7 / ASTM A 194 Gr. 2H
20	Disc	1	S.S. 18/8% Cr./Ni./ Lumina	AISI – 304 / Ni. Cu. Alloy

Nominal Size (mm)	D	H	H'(App.)	MRP / Piece
25 x 40	124	104	345	–
25 x 50	140	124	410	–
40 x 50	140	124	410	–
50 x 80	178	162	552	–
80 x 100	190	188	640	–

Nominal Size (mm)

H'(App.)

MRP / Piece

25 x 40

124

104

345

–

25 x 50

140

124

410

–

40 x 50

140

124

410

–

50 x 80

178

162

552

–

80 x 100

190

188

640

–

Nominal Size (mm)	D	H	H'(App.)	MRP / Piece
25 x 40	124	104	345	–
25 x 50	140	124	410	–
40 x 50	140	124	410	–
50 x 80	178	162	552	–
80 x 100	190	188	640	–