PH（4/6）4美标旋启式焊接止回阀
Product Overview:
There are three types of American standard check valves: lifting, swinging and butterfly. There are two designs of the bonnet of the swing check valve, the pressure level of 150Lb-300Lb is the bolted bonnet, and the gasket has two kinds of wound gasket and metal ring gasket; The valve with pressure grade 600Lb~2500Lb is a self-pressure sealing bonnet structure, and the pressure sealing type has metal seal and 316 stainless steel plus flexible graphite seal. The connection type is flange connection and butt welding connection
Specifications:
> size range: 1/2"~24" (DN15~DN600)
> Pressure Rating: ASME 150~2500LB(PN16~PN420) > temperature range: -46°C -600°C
> connection methods: flange, welding, threading, etc
> main material: carbon steel, stainless steel, duplex steel, alloy steel, etc
> sealing surface hardening treatment: surfacing Stellite alloy and nickel-based alloy
Product Standards:
Design standard: ANSIB 16.34
Structure length: ANSIB16.10
Connecting flange: ANSIB16.15
Test and Inspection: API598
Features :
1. The design and manufacture of the product meets the requirements of American National Standard ANSIB16.34 and American Petroleum Institute Standard APl6D.
2. The valve disc is swivel-open, the flow channel is straight, and the horizontal pipeline and vertical pipeline can be installed.
3. The rocker pin adopts a built-in structure, which reduces the shortcomings of external leakage.
4. The valve body bonnet is bolted, and the grade is greater than Class 600Lb under high pressure, and the middle flange adopts internal pressure self-sealing structure, which makes the product light in size and weight and reliable in sealing.
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