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Hangzhou valve focuses on scientific and technological innovation and cooperation in production, learning and research. Currently, it has more than 70 national patents, including temperature reduction and pressure reducing devices, safety valves, among which, 8 patents are invention.

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Steam turbine bypass temperature and pressure reducing device

Ultra-high temperature and high pressure temperature and pressure reducing device

High temperature and high pressure temperature and pressure reducing device

Sub-high pressure temperature and pressure reducing device

Medium temperature and medium pressure temperature and pressure reducing device

Desuperheating device

Pressure reducing device

Full-volume safety valve

Large diameter safety valve

Sub-high pressure safety valve

High parameter pressure reducing valve

High parameter control valve

Instrument control valve

Power station valve

High pressure inlet and outlet valve

9.大口径安全阀-杭州华惠阀门.pdf

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LARGE SIZE SAFETY VALVE

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产品描述

Parameters

HFAs48Y is especially designed with large size from DN250 (10") up to DN600 (24"), the valve is suitable for low and medium set pressure saturated steam applications. Its set pressure range is <2.5 MPa, maximal working temperature <427 DegreeC, suitable for most power plant LP steam line service with larger capacity where needed.

Types: Coventional safety valve
Full nozzle with open bonnet, with lever
Available sizes: DN250(10") up to DN600(24")
Available rating: PN16 up to PN50, Class 150# – 300#
Medium: Steam under 427 DegreeC
Blowdown: 10%
Discharge Coefficient: G-0.75
Connection Flange: ASME B16.5, GOST-12820, JIS Std

Large orifice is adoptive for larger capacity purpose.
Compact structure and construction.
The radiator structure is provided once the temperature exceeds 350 DegreeC, which protect the spring from the influence of high temperature, and gives the stable performance of spring.
The surface of both disc and nozzle seat is deposited with hard alloy of Stellite, and the excellent surface treatment by precision machining and lapping ensure the tightness under high temperature working service.