Valve sizing software developed in-house by Shanghai Dacheng Special Control Valve Co., Ltd.. We do not put the installer behind an anonymous download link — an engineer sends it to each applicant, so we can ask about your service conditions and match the right valve categories to your plant.
Request the installer by e-mailOther ways to reach us

Prefer not to write? Scan to add one of our engineers on WeCom — tell us your company and service conditions, and we send the installer and a licence code together. Free to use for the first 30 days. Not sure it calculates correctly? Send one valve’s parameters and try a single case first.On mobile, long-press the code to recognise and add.
Enter medium, pressures, temperature and flow; the software computes the flow coefficient (Kv) and recommends a valve type and size. Liquids, gases and steam each follow their own calculation path.
Drop in the client's valve datasheet — spreadsheet, PDF, scan or archive — and the software reads tag numbers, specifications and parameters into a register, then sizes each valve in it.
It builds the full valve model code in the standard sequence (drive, connection, trim seal, pressure class, size) and handles actuator and accessory naming alongside it.
Sizing results and requisition sheets export as spreadsheets in the formats engineering deliverables normally use, so they can be checked, countersigned and archived downstream.
Windows 10 / 11 (64-bit); installer 85.8 MB (89,965,047 bytes). Assisted setup with a choice of install folder, desktop and Start Menu shortcuts; every runtime it needs ships inside the package.
The e-mail that sends you the installer also gives its checksum; compare it once to confirm the file arrived intact.
The home screen, register and exported results are always viewable and editable. For 30 days from the first launch every feature works with no code needed. After that a 30-day grace period keeps manual sizing running while batch sizing stops; once the grace period ends both flows need a licence code. We send the code together with the installer; it is verified on the machine itself — no network needed — and one code binds to one machine. Beta licence terms may change, and any change will be announced on this page and inside the software before it takes effect.
No licence state ever deletes or clears data you have entered or results you have exported; a new code restores full work. For renewals, a second machine or a colleague's install, just write to us.
WeCom · Zhiheng sizing system

Scan with WeChat, or long-press the code
Installer and licence code sent one to one; free for the first 30 days
What it calculates, how to get it →