English
中文简体
Technical Parameters of 1000 WOG Valves
| Parameter | Typical Specification |
|---|---|
| Pressure rating | 1000 psi WOG (about 69 bar), non-shock, at ambient temperature |
| Body material | CF8M, CF8 (A351); F304, F316L (A182) for small sizes |
| Ball and stem | 316 or 304 stainless steel, polished ball |
| Seat | PTFE, reinforced PTFE (RPTFE), PEEK on request |
| Stem seal | PTFE packing with adjustable gland nut; live-loaded stem on request |
| Size range | 1/4 inch to 4 inch (DN8 to DN100) |
| Port | Full port (standard) or reduced port |
| Working temperature | -20 °C to +180 °C with seat limits; pressure reduces as temperature rises |
| End connections | NPT, BSPT, BSPP, socket weld, butt weld, tri-clamp |
| Handle | Lever, locking lever, oval handle, ISO 5211 pad for actuators |
Typical rating by size
| Size | Typical Rating (2-piece full port) | Typical Rating (3-piece) |
|---|---|---|
| 1/4 inch to 1 inch | 1000 WOG, some designs 2000 WOG | 1000 WOG |
| 1 1/4 inch to 2 inch | 1000 WOG | 1000 WOG |
| 2 1/2 inch to 3 inch | 800 to 1000 WOG | 500 to 800 WOG |
| 4 inch | 500 to 800 WOG | 500 WOG |
Pressure drops as the valve warms up. The 1000 psi value applies at ambient temperature. A PTFE-seated valve rated at 1000 WOG may be limited to a few hundred psi at 150 °C, because the seat softens. We supply a pressure-temperature curve with each quotation, and recommend RPTFE, PEEK or metal seats for hot service.
"Non-shock" matters. WOG ratings assume smooth operation. Water hammer, pump surges and rapid valve closing can produce pressure peaks far above line pressure. Please tell us if your line has such effects, and we will advise on design or valve selection.
1000 WOG Valve Range and One-Stop Supply
Most buyers of 1000 WOG valves are distributors and OEM builders who need a range of sizes, end connections and accessories. We make the range broad enough that one order can cover a full catalogue page, so you receive consistent quality and one set of documents.
| Product | Size Range | Rating |
|---|---|---|
| 2-piece full port ball valve | 1/4 inch to 4 inch | 1000 WOG (size dependent) |
| 3-piece ball valve | 1/4 inch to 4 inch | 1000 WOG (size dependent) |
| 1-piece reduced port ball valve | 1/4 inch to 2 inch | 1000 WOG |
| 3-way ball valve, L-port and T-port | 1/4 inch to 2 inch | 1000 WOG |
| Lift and spring check valve | 1/4 inch to 2 inch | 1000 WOG |
| Y-strainer | 1/4 inch to 4 inch | 800 to 1000 WOG |
| Needle valve | 1/8 inch to 1 inch | 1000 to 6000 psi depending on design |
| Unions, nipples, bushings and fittings | 1/8 inch to 4 inch | Class 150 and 3000 lb |
Why 1000 WOG is so widely used
- Wide coverage: the rating suits the majority of water, air and fluid lines up to 2 inch.
- Compact and light: small body, low torque, easy installation.
- Economical: cast stainless construction keeps cost low compared with forged high-pressure designs.
- Flexible: many end connections and handle options make it easy to fit machines and plants.
If your application exceeds 1000 psi, or involves hot steam or shock loads, tell us, and we will propose a higher-rated valve, such as a 2000 WOG, Class 600 or forged design.
Standards for 1000 WOG Valves
WOG ratings are manufacturer ratings, not defined pressure classes like ASME Class 150, so the design and test standards that sit behind them are especially important. We follow the references below and state them in the product data sheet.
| Area | Standard Reference |
|---|---|
| Ball valve design, threaded and socket weld | MSS SP-110, ISO 17292, BS 5351 |
| Pipe threads | ASME B1.20.1 (NPT), ISO 228 (BSPP), ISO 7 (BSPT) |
| Socket weld ends | ASME B16.11 |
| Stainless steel castings | ASTM A351 CF8, CF8M, CF3M |
| Forged bodies | ASTM A182 F304, F316L |
| Marking | MSS SP-25 |
| Pressure testing | API 598, MSS SP-110, EN 12266-1, ISO 5208 |
| Fire safe design | API 607, ISO 10497 on selected models |
| Fugitive emission | ISO 15848-1 on selected models |
| Actuator mounting | ISO 5211 |
WOG versus pressure classes: a 1000 WOG valve is not directly comparable to a Class 150 or PN40 valve, because WOG is a cold working pressure for the valve as a whole, including the seat and stem seal, and not a flange rating. Where a standard is needed for a bolted flange connection, we recommend choosing a Class or PN rated valve.
When your specification mentions "1000 WOG", we suggest adding the standard, such as MSS SP-110, and the test requirement, so that all suppliers quote on the same basis.
Reference note: MSS SP-110 is the main design and test reference for threaded and socket weld ball valves, but it leaves some details to the manufacturer. If you need a fixed port size, torque limit or stem design, state it in the inquiry, so that we match it and record it in the data sheet we send.
Certificates and Documents for 1000 WOG Valves
Many buyers of 1000 WOG valves are distributors who resell into water, food, marine and industrial markets. They need documents that can be reused with different end customers, and that stand up to a basic audit. We prepare packages that fit these needs.
- Material certificate: EN 10204 3.1 for body and trim, with chemical composition and heat number.
- Pressure test report: shell test and seat test per MSS SP-110 or API 598.
- Thread inspection report: gauge results for NPT, BSPT or BSPP threads on sampled valves.
- Fire safe test report: API 607 or ISO 10497 on selected designs.
- Food contact and drinking water documents: FDA, EU 1935/2004, NSF 61 or WRAS statements for suitable seals, on request.
- CE marking: for qualifying models where the Pressure Equipment Directive applies.
- Quality management: ISO 9001 style system and batch records.
- Certificate of origin and conformity: issued with shipping documents.
Be clear about what you need. Not every 1000 WOG valve has every approval. Tell us the destination country and the application, and we will confirm which models carry the relevant documents.
Sample certificate sets are available before order confirmation, and we can reuse the same format for repeat orders.
Audit tip: keep one reference file per product family, holding the material certificate format, the test report format and the declaration of conformity. When a customer asks for documents, you can issue them quickly from this file, and we can supply updates for each new production lot without rewriting the whole package.
Traceability in High-Volume Valve Production
Valves rated 1000 WOG are produced in large batches, so traceability needs to be systematic and simple, otherwise it breaks down at the packing stage. Our system links each production lot to its material, its machining run, its assembly and its test record, and carries the same lot number onto the carton label.
- Material lots: bar and castings are received with certificates, with heat numbers recorded and PMI checked.
- Machining lots: threads, balls and stems are machined in labelled batches, with first article inspection at the start of each run.
- Seat and seal lots: PTFE and RPTFE seat batches are recorded with supplier lot numbers.
- Assembly lots: assembly sheets list the body heat, ball lot, seat lot and operator.
- Test records: pressure test results are filed by lot and date.
- Carton labels: size, thread, material and lot number are printed on each carton and linked to the packing list.
| Stage | Record Kept | Benefit |
|---|---|---|
| Material receiving | Heat number and PMI | Proof of grade |
| Machining | Batch number and first article | Consistent threads and dimensions |
| Seat and seal | Supplier lot | Sealing quality and compliance |
| Assembly | Assembly sheet | Link between parts and valve |
| Testing | Pressure test report by lot | Evidence of leak tightness |
| Packing | Carton label with lot | Link to shipment |
When a distributor reports a problem with a particular batch, the lot record lets us locate the production records and affected valves quickly, and respond with facts instead of guesses.
Why lot numbers help distributors: if an end customer reports a problem months after sale, the lot number on the carton lets you find the original delivery and send us the information. We can then check the production and test records for that lot, and answer within a short time.
Testing Capability for 1000 WOG Valves
Testing for small bore ball valves is straightforward in principle but demanding in volume. We use dedicated test benches with quick-connect fixtures, so every valve can be tested without trading speed for care.
| Test | Typical Value or Method | Frequency |
|---|---|---|
| Shell test | Hydrostatic at 1.5 x rating, about 100 bar for 1000 WOG, per MSS SP-110 | 100% of valves |
| Seat test, liquid | Hydrostatic at 1.1 x rating, checking for leakage | 100% of valves |
| Low-pressure air seat test | Compressed air at about 6 bar under water | 100% of soft-seated valves |
| Thread inspection | NPT, BSPT and BSPP gauges | First article and sampling |
| Operating torque | Torque tester at the stem | Sampling |
| PMI | XRF analyser for body, ball and stem | Incoming and sampling |
| Cycle test | Repeated open and close, typically 5000 cycles on type test samples | Type test or on request |
| Fire safe test | API 607 or ISO 10497 on selected designs | Type test reports on request |
Why both liquid and air seat tests? A water test at high pressure shows that the seat holds under load, but a small leak may remain hidden. A low-pressure air test under water reveals tiny leaks that matter in gas and instrument air service. Doing both gives you more confidence than either test alone.
We welcome witnessed testing, and can supply a photo or video of the pressure gauge with the test report.
Cycle life: a quality ball valve should operate smoothly for thousands of cycles. We run cycle tests on type samples and check torque at the start and end, so you can see whether the seat and stem seal remain stable. We can send cycle test data on request with the quotation.
Frequently Asked Questions about 1000 WOG Valves
Q: What does 1000 WOG mean?
It means that the valve is rated for 1000 psi (about 69 bar) of water, oil or gas at ambient temperature, with no pressure shocks. The rating falls as temperature rises.
Q: Is 1000 WOG the same as PN64?
The numbers are close, since 1000 psi is about 69 bar, but PN is a different rating system tied to flange standards. A threaded 1000 WOG valve is not defined by PN.
Q: Can I use a 1000 WOG valve for steam?
Only in light, low-pressure duty and with suitable seats. PTFE seats are limited by temperature, so steam above about 150 °C needs graphite or metal seats. Tell us your steam pressure and we will advise.
Q: Why is the rating lower on large sizes?
Larger valves have longer stems and bigger seats, which experience higher forces at the same pressure. Designers therefore reduce the rating to keep stress within safe limits.
Q: What is the difference between 2-piece and 3-piece ball valves?
A 2-piece valve is lighter and cheaper but must be removed from the line for repair. A 3-piece valve lets you remove the body from the end caps, so seats can be changed in place.
Q: Are 1000 WOG valves suitable for hydraulic oil?
They are suitable for many oil duties within temperature limits, but hydraulic systems with pressure shocks may need a higher rating. Please share your working pressure and peak values.
Q: Can I get a valve with a higher rating in the same size?
Yes. Some 2-piece designs are available at 2000 WOG in small sizes, and forged high-pressure designs go higher.
MOQ and Pricing for 1000 WOG Valves
As a high-volume product, 1000 WOG valves have some of the most flexible terms in our range. Distributors can mix sizes and end connections, and OEM customers can arrange scheduled deliveries.
| Item | Typical Terms |
|---|---|
| Sample order | 1 to 5 pieces per model |
| Standard MOQ | 100 pieces per size; mixed sizes accepted within the same series |
| OEM or branded valves | 300 to 500 pieces per model, depending on marking and packing |
| Pricing basis | EXW, FOB Ningbo, CFR or CIF in USD |
| Quote validity | 30 days, adjusted for stainless steel price changes |
| Payment | 30% T/T deposit, 70% before shipment; L/C at sight for approved accounts |
Volume pricing
Because these valves are produced in batches, price falls noticeably as quantity grows. A typical price structure might show a visible step at 500 pieces and another at 2000 pieces per size, though exact steps depend on the model. Sending your annual forecast allows us to quote a price that applies to the whole year.
- Material: CF8 is lower in cost than CF8M, and both are lower than forged 316L.
- Port: full port costs more than reduced port.
- Seat: RPTFE and PEEK cost more than virgin PTFE.
- Handle and marking: locking and coloured handles, laser marking and special cartons add cost.
- Documents: special approvals and third-party reports are extra.
If you are building a catalogue, we can supply starter sets with a cost-effective selection of the most popular sizes and ends.
Ordering advice: start with a balanced assortment of the most popular sizes, such as 1/2, 3/4, 1, 1 1/2 and 2 inch, and add less common sizes later. Review sales every season and adjust the mix, and we can help you analyse sales data to forecast which items to hold.
Lead Time, Customisation, Packaging and Trade Terms
Lead time and stock
Popular sizes of 1000 WOG ball valves are kept in semi-finished stock, so standard orders typically ship in 10 to 20 days. Customised handles, marking or end connections need 25 to 35 days. We can ship in stages if you need urgent items first.
Customisation
You can customise thread type, handle colour and shape, laser marking, seat material, packing, locking device, stem extension, actuator interface and packaging. For OEM customers, we can supply valves in your brand colours, with your own item numbers and barcodes.
Packaging
- Each valve in a polybag with thread protectors
- Inner box of 10 to 50 pieces depending on size, with dividers
- Export cartons on pallets, strapped and wrapped
- Barcode labels, retail boxes and blister packs on request
- Neutral or customer-branded cartons
Shipping and trade terms
| Term | Details |
|---|---|
| Incoterms | EXW, FOB Ningbo, CFR, CIF, DAP |
| Port | Ningbo-Zhoushan; Shanghai as an alternative |
| Transport | Sea freight, air freight for urgent items, express courier for samples |
| Documents | Invoice, packing list, bill of lading, origin certificate, material and test certificates |
We can combine 1000 WOG valves with other stainless valves and fittings from our range in one container, which helps cut freight costs per piece.
Handling advice: keep valves in their cartons, away from dust and moisture, until installation. Remove thread protectors only when assembling, and use thread sealant suited to stainless steel and the medium. A short installation note is included in each carton on request, for your customers.
