Nationwide support across China
Technical support is available around the clock. On-site response is provided within 24 hours in local and core regions and within 48 hours in other areas.
Official service & warranty terms
Service and warranty terms. Clear from order to after-sales.
Diefei's official terms define domestic and international after-sales support, pre-shipment packaging, warranty coverage, lead time and minimum order quantities. Review each term before confirming an order.
Domestic and international support Valve-specific packaging Standard and custom orders
7×24Technical support
3–5 daysRoutine repair window
10–15 daysStandard lead time
1 pieceStandard valve MOQ
Maintenance & after-sales service
Support that answers the clock.
Service defined by region.
Diefei provides around-the-clock technical support and a domestic service network designed for timely field response. International customers receive the same 7×24 technical access, common spare-parts dispatch and long-term parts supply.
Technical access across time zones
International customers receive around-the-clock technical support. Common spare parts are dispatched within 24 hours upon request, backed by a 15-year spare-parts supply.
Routine repairs within 3–5 working days
Routine repairs shall be completed within 3–5 working days. The repair scope should be matched to the valve, fault and applicable order terms.
Rapid dispatch and long-term supply
Common spare parts are dispatched within 24 hours upon request. Diefei guarantees a 15-year supply of spare parts for ongoing service needs.
7×24 technical support
Technical support is available around the clock for domestic and international customers.
24h / 48h on-site response
Domestic on-site response is within 24 hours in local and core regions and within 48 hours in other areas.
3–5 working days
Routine repairs shall be completed within the stated working-day window.
Packaging & shipment protection
Protection matched to valve size.
Documents matched to the shipment.
Small-size and large-size valves follow different packing methods. Every consignment is protected against moisture and rust before shipment and is accompanied by the applicable product documentation.
Corrugated carton packing
Small-size valves shall be packed in corrugated cartons. The carton format provides a defined outer pack for smaller valve sizes.
- Corrugated carton outer pack
- Applicable to small-size valves
- Prepared for shipment protection
Plywood crates and steel strapping
Large-size valves shall be packed in plywood wooden crates and secured with steel strapping for shipment handling.
Plywood crateSteel strappingLarge-size valves
Moisture-proof and rust-proof treatment
All products shall undergo moisture-proof and rust-proof treatment prior to shipment, supporting protection through handling and transport.
Moisture-proofRust-proofBefore shipment
01
Product documentation
Relevant documentation accompanies each consignment.
- Certificate of ConformityConformity record
- Instruction ManualProduct guidance
- Warranty CertificateWarranty record
- Packing ListShipment content
02
Other applicable documents
Supplied as relevant to the consignment and agreed order scope.
- Order-specific documentationWhen applicable
- Shipment recordsAligned to the consignment
- Document language and formatConfirm before shipment
Document check
Confirm the required document set with the valve specification and order before shipment.
Warranty
A 12-month warranty.
The start date is defined.
The warranty period is twelve months from the date of shipment, or twelve months from the date of successful commissioning, whichever occurs first. Coverage is limited to main body material and sealing performance, with defined exclusions.
12-month warranty period
The warranty period shall be twelve (12) months.
Official termWhichever occurs first
The period runs from the date of shipment or from the date of successful commissioning, whichever occurs first.
Official termCovered scope
The warranty covers defects in the main body material and failures of sealing performance.
CoveredExcluded causes
Damage caused by misuse, operation beyond rated pressure or temperature, and normal wear and tear are excluded.
ExcludedWarranty reference: coverage follows the terms stated above. Review the applicable order documents and Warranty Certificate for the final terms governing the valve supplied.
Lead time & minimum order quantity
Standard or custom.
The commercial terms change with the order.
Lead time and minimum order quantity depend on whether the valve uses a standard specification or a custom, non-standard specification. Confirm both before placing the order.
01
Standard specifications
Standard valve orders
- Lead time: 10–15 days
- Minimum quantity: as low as one (1) piece
- Applicable to standard specifications
- Confirm the model, size and order quantity
02
Custom or non-standard
Custom valve orders
- Lead time: 25–35 days
- Typical minimum quantity: 10–50 pieces
- MOQ depends on specifications
- Confirm the custom requirement before quotation
Prepare the confirmation
Four details define the next step.
Use these checkpoints to match the correct service, packaging, warranty, lead-time and commercial terms to your valve order.
Valve type and size
Identify the product and size so packaging and applicable terms can be confirmed.
Standard or custom
Confirm whether the order uses a standard specification or a custom, non-standard design.
Quantity and schedule
Check the MOQ and the 10–15 day standard or 25–35 day custom lead-time range.
Destination and documents
Confirm the service region and the product documents required with the consignment.
Before ordering
Put the technical and commercial details together.
Share the valve specification, quantity, standard or custom requirement, destination and required documents so the applicable terms can be reviewed in one step.
Service & warranty FAQ
Questions before you
confirm the order.
These answers summarize the official Service & Warranty Terms. Confirm the applicable valve specification and order documents before purchase.
How long is the Diefei valve warranty?
The warranty period is twelve months from the date of shipment, or twelve months from the date of successful commissioning, whichever occurs first.
What does the warranty cover and exclude?
The warranty covers defects in the main body material and failures of sealing performance. It does not apply to damage caused by misuse, operation beyond rated pressure or temperature, or normal wear and tear.
What domestic after-sales response is available?
Technical support is available around the clock. On-site response is provided within 24 hours in local and core regions and within 48 hours in other areas. Routine repairs are completed within 3–5 working days.
How are common spare parts supported?
Common spare parts are dispatched within 24 hours upon request, and Diefei guarantees a 15-year supply of spare parts.
What are the lead times and minimum order quantities?
Standard specifications have a lead time of 10–15 days, while custom or non-standard specifications have a lead time of 25–35 days. Standard valves may be ordered from one piece. Custom valves typically require 10–50 pieces, depending on specifications.
Confirm your service and order terms
Send the valve specification and order requirements.
Share the valve type, size, standard or custom requirement, quantity, destination and required documents so the applicable terms can be confirmed.
