A48Y Full bore type spring loaded safety pressure relief valve with wrench

A48C Open Bonnet Plain Lever Tpye Safety Valve

Safety Valves/pressure safety valves, angle type
Full lift safety valve
Standard safety valve for boiler, open bonnet,
metal to metal seated, with plain type lifting device,
Inlet: Flanged connection acc. to ANSI B16.5
Outlet: Flanged connection acc. to ANSI B16.5

Applications

Provided as safety device for protection against excessive pressure in pressure vessels.
Approved for gases, vapours and fluids
Working temperatures: Lower than 300°C

Standards Compliance

Design and Manufacture: API RP 520
Face to Face(end to end): API 526
Test and Inspection: API 527

Main property specifiecation

Mormal Pressure	PN	150	300	600
Body strength	Ps(Mpa)	3.0	7.5	15
Set pressure	Pk(Mpa)	0.1-2	1.6-5	3.2-10
Seal pressure	Pm(Mpa)	90%Pk
Reseation pressure	Ph(Mpa)	≥90%Pk
Relieving Pressure	Pp(Mpa)	≤1.03Pk
Lift height	H(mm)	≥1/4 d0
Appropriate  temp.	≤300℃
Appropriate Medium	Fluids, Steam

Code of throat diameter

Code	Diameter	Code	Diameter
D	10	L	50
E	13	M	55
F	16	N	60
G	20.5	P	72
H	26	Q	96
J	33	R	115
K	40	T	148