Forging Steel Bellows Sealed B.B Gate Valve

Product Description

The opening and closing member of the casting steel bellows sealed B.B gate valve is a plug-shaped valve flap with a flat or tapered surface, and the valve flap moves linearly along the center line of the fluid. The movement form of the valve stem has a lifting rod type (the valve stem is lifted and lowered, the hand wheel does not move up and down), and there is also a lifting rotary rod type (the hand wheel and the valve stem rotate together and the nut is set on the valve body). This type of valve should generally be installed horizontally in the pipeline.

Features

1. Bellows sealed to prevent leakage may

2. Integral seal down

3. Low leakage test stem packing by

4. Automatically adjust the preload gland packing

Application criteria

Design: API 602/ASME 16.34/BS 5352

Pressure Test: API 598

SW Socket welding ends according to ASME B16.11

BW butt end by ASME B16.25

NPT threaded connectors according to ASME B1.20.1

Pressure rating: Class800~Class2500

Size range: 1 / 4 "to 2"

Optional Materials

Carbon Steel: A105, LF2

Stainless Steel: F304, F304L, F316, F316L

Duplex: F51, F55

Alloy: F1, F5, F5A, F9, F11, F22