1 published equipment referenceLatest source review 2026-10-07
01 / COMPANY
What this manufacturer offers
Shanxi Jiangong Shenhua HVAC Equipment Co., Ltd. publishes household self-operated flow-control valves for hydronic systems. Its reviewed product page describes a precision-cast 304 stainless-steel body and bonnet, a ceramic regulating plate and a locked setting arrangement. The published uses include household heating connections and fan-coil water circuits. This is a practical starting point for reviewing a balancing-valve enquiry, rather than a complete model selection.
The company’s current about page requires caution. Its main description contains unrelated placeholder copy about an unnamed mould, plastics and PCBA business. That copy is excluded from this biography: neither the 2010 founding date nor the production activities described in the placeholder are attributed to Jiangong Shenhua. A later part of the same page identifies hydronic balancing valves as the company’s focus, but its research and recognition claims still need their own supporting records.
An independently accessible national standards record provides a firmer, limited connection: it names 山西建工申华暖通设备有限公司 among the drafting organisations for the self-operating flow-control-valve project that led to GB/T 29735-2013. The technical product data, the dated drafting record and the unreliable biography text are kept separate below.
Chinese name in the standards record
山西建工申华暖通设备有限公司Named drafting organisation. This record is not a current business-registration or product-certification check. Source
Reviewed product construction
304 stainless-steel body and bonnet; ceramic regulating plateManufacturer description of the household valve. It does not establish ownership of a foundry or a complete wetted-material schedule. Source
Biography source limitation
Unrelated mould/plastics/PCBA placeholder text on the about pageExcluded from company history and capability claims in this manuscript. Source
Parameters and source limits · Self-operated household flow-control valves
Swipe the table, or focus it and use arrow keys, to read conditions and sources.
Manufacturer-published information · Self-operated household flow-control valves
Parameter
Published value
Conditions and evidence
Published operating differential pressure
0.02–0.3 MPa
Constant-flow operating statement; not maximum body pressure or a selected flow curve. Source
Published accuracy statements
Scale indication ±5%; constant flow ±6%
Separate supplier statements; no reproduced method, specimen or test conditions. Source
Setting dial
170° adjustment scale
Photograph shows a numbered dial; size-specific setting-to-flow schedule is required. Source
Body and bonnet
Precision-cast 304 stainless steel
Supplier description; other components stated as stainless steel or brass, with no complete wetted schedule. Source
Photographed body markings
DN25 · PN16 · flow-direction arrow
Read on the actual original image only; not proof all offered sizes have this designation or a current conformity certificate. Source
Stated cycle test
100,000 on/off operations
Manufacturer attributes test to a national air-conditioning institute; original report/date/specimen absent. Source
03 / PROJECT REVIEW
Jiangong Shenhua: valve evidence without an invented company history
Read the pressure range separately from flow and accuracy
The household-valve page gives a constant-flow differential-pressure range of 0.02–0.3 MPa, an indicated flow-scale accuracy of ±5% and constant-flow accuracy of ±6%. These are manufacturer-published figures without a reproduced test method or an exact valve-size characteristic curve. The pressure range is not a nominal flow rating. (Source 2.)
Published operating statement
A differential-pressure range and two accuracy statements for the household valve publication. The page does not establish the selected connection size, nominal flow or performance at the buyer’s exact operating point.
Request the complete designation, selected flow setting and flow-versus-pressure curve for the size being quoted. Compare available system pressure with that selection rather than choosing from pipe size alone.
Construction statements do not settle all water-side requirements
The product page identifies precision-cast 304 stainless steel for the body and bonnet, with other parts described as stainless steel or brass. It describes a planar ceramic seal and a regulating-plug arrangement intended to resist sticking. That is evidence of the supplier’s construction description, not a confirmed schedule for every component. (Source 2.)
The publication’s statements about operation in poor water conditions do not provide a defined water-quality limit, filtration requirement or verified leakage result. Ask which materials contact the medium and which temperature and treatment conditions apply to the selected valve. Although the page also names water-supply applications, this profile does not infer potable-water approval from that application statement.
A household setting needs a commissioning record, not just a scale
The reviewed page describes a 170° setting scale, a temperature connection suitable for return-water measurement and a restricted setting lock. The commissioning discussion should use those actual features rather than a generic request for an unspecified smart controller. (Source 2.)
Choose and document the flow setting
Match the selected valve and its characteristic curve to the intended household or fan-coil flow. Record the size, designation and chosen setting before installation.
Confirm installation and measurement
Obtain the installation orientation and any upstream or downstream requirements. If using the temperature connection on a return circuit, identify the measurement arrangement and its purpose.
Record adjustment and lock responsibility
Identify who reads and adjusts the setting, who controls the restricted lock, and what is recorded at handover. The published scale description is not a commissioning result for the buyer’s circuit.
The stated life test needs its own report
The manufacturer says that the product underwent a 100,000-cycle on/off life test at a national air-conditioning institute. The readable page does not reproduce a report number, test date, specimen designation or full conditions. We have not labelled the valve platform-certified or independently life-tested on the strength of that sentence. (Source 2.)
For an order relying on that test, obtain the original report and match its tested product to the proposed valve size and construction. Keep a life-test statement separate from the published flow-accuracy figures and from any water-quality suitability claim. There is no basis here to infer the service life of an installation or a warranty duration from the cycle count alone.
What the national standards record actually establishes
The national standards platform identifies project 20076354-T-333, issued on 4 December 2007, for self-operating flow-control valves used in heating and air conditioning. It lists Jiangong Shenhua as a drafting organisation and links the published outcome GB/T 29735-2013. The original record was read after the manufacturer pages for this manuscript. (Source 3.)
Supported: dated standards participation
The exact Chinese company name appears in the drafting-organisations list for the identified project. This is attributable evidence of participation in that standard’s development.
The drafting record does not certify every household valve, provide a current test report or identify the quoted model’s conformity. Obtain the applicable product evidence separately.
07 / TRANSPARENCY
Sources and review scope
Compiled by HVACDeck Editorial. Page review: 2026-10-07. Publications are attributed below; their statements are not independent measurements by this platform.
Jiangong Shenhua official about page — source 1Checked 2026-10-07 · Read individually. Main biography contains unrelated placeholder text, which is excluded; lower hydronic-focus statements remain company claims.
Original valve body photographChecked 2026-10-11 · Actual body image viewed: DN25 and PN16 casting plus flow arrow; no full size schedule or test certificate.
