High pressure forging gate valve
Description
Forging body, no defect, high reliability.
Pressurized seal design, more reliable the seal.
Adopt flexible wedge disc, double wedge discs and double parallel discs.
The sealing surface is welded with hard alloy. Wear resistant and corrosion resistant, reliable sealing, long service life.
Stem adopt 38CrMoAlA or SS specified by customer, heat treatment, surface treatment.
Drive mode: manual, electric, pneumatic, hydraulic, gear transmission, worm drive.
Product structure drawing
Type: DZ960Y, DZ962Y,DZ964Y, DZ560Y, DZ562Y, DZ564Y, DZ60Y, DZ62Y, DZ64Y
DZ960Y（Wedge flexible gate） DZ962Y（Double wedge solid gates） DZ964Y（Double parallel solid gates）
Design standard
Design & manufacture | End to end dimension | End dimension | Inspection and test | Press-temp ratings |
NB/T47044 | NB/T47044 | NB/T47044 | NB/T47044 | NB/T47044 |
ASME B16.34 | ASME B16.10 | ASME B16.25 | API 598 | ASME B16.34 |
Technical specification
Nominal press | 200 | 250 | 320 | 420 | 1500Lb | 2500Lb | 3500Lb | 4500Lb | P54100V | P54140V | P54170V | P58270V |
Shell test | MPa | 30.0 | 37.5 | 48.0 | 60.0 | Follow on press-temp rating | 30.0 | 42.0 | 51.0 | 75.5 |
Seal test | 22.0 | 27.5 | 35.2 | 46.2 | 1.1 times nominal press | 12.5 | 17.5 | 21.2 | 33.8 |
Back seal test | 22.0 | 27.5 | 35.2 | 46.2 | 12.5 | 17.5 | 21.2 | 33.8 |
Main parts material
Body | Bonnet | Disc | Seat | Stem | Yoke |
20/A105 | 20/A105 | 20/A105 | 20/A105 | 38CrMoAlA | WCB |
15CrMo | 15CrMo | 15CrMo | 15CrMo | 38CrMoAlA | WCB |
12Cr1MoV | 12Cr1MoV | 12Cr1MoV | 12Cr1MoV | 38CrMoAlA | WCB/WC6 |
F36 | F36 | F36 | F36/25 | 38CrMoAlA | WCB |
F22 | F22 | F22 | F22 | 38CrMoAlA | WCB/WC6 |
F91 | F91 | F91 | F91 | 616/20Cr1Mo1VNbTiB | WCB/WC6 |
F92 | F92 | F92 | F92 | FXM-19/ | WC9/WC6 |
