Ouyi valve. was established in 1997. We are manufactures, specialize in design, production complete ball valve spare parts.
“Safety and economical industrial valve solution” is Ouyi’s eternal quality policy and objective. Based on international and domestic industrial standards and customer requirements, we set up higher internal quality assurance standards to implement comprehensive and full quality management. OUYI already executed the full process quality control covered whole producing process which are from raw material purchasing, producing process, completed products inspection, test & tracing to after service. The inspection and tests include:
Company History
Ouyi Products
Stem Tunnion Ball
Stem Tunnion Ball

Product Name:Stem/Three-way Ball Nominal Size:NPS1''~4''(DN25~100) Pressure Rating:Class 150~1500(PN20~250) Basic Material: ASTM A105, A350 LF2, A182 F304, A182 F316, A182 F6A A182 F51, A182 F53,

Floating Ball
Floating Ball

Product Name:Floating Ball Nominal Size: NPS1/2''~12''(DN15~300) Pressure Rating: Class 150~600(PN20~100)

Trunnion Ball OY002
Trunnion Ball OY002

Product Name:Trunnion Ball Nominal Size:NPS2''~48''(DN50~1200) Pressure Rating:Class 150~2500(PN20~420) Basic Material: ASTM A105, A350 LF2, A182 F304, A182 F316, A182 F6AA182 F51, A182 F53, A564 630(17-4PH), Monel, Alloy

Trunnion Ball OY001
Trunnion Ball OY001

Product Name:Trunnion Ball Nominal Size:NPS2''~48''(DN50~1200) Pressure Rating:Class 150~2500(PN20~420) Basic Material: ASTM A105, A350 LF2, A182 F304, A182 F316, A182 F6AA182 F51, A182 F53, A564 630(17-4PH), Monel, Alloy

Trunnion Plate
Trunnion Plate

Product Name: Trunnion Plate Nominal Size:NPS4''~56''(DN100~1400) Pressure Rating:Class 150~2500(PN20~420) Basic Material: ASTM A105, A350 LF2, A182 F304, A182 F316, A182 F6A,A182 F51, A182 F53,A564 630(17-4PH), Monel

Forged Valve body
Forged Valve body

3pc design of forged body

Valve Stem
Valve Stem

Product Name:Stem Pressure Rating:Class 150~2500(PN20~420) Basic Material: ASTM A105, A350 LF2, A182 F304, A182 F316, A182 F6A,A182 F51, A182 F53,A564 630(17-4PH), Monel, Alloy

Seat Retainer
Seat Retainer

Product Name:Seat Retainer Nominal Size:NPS2''~56''(DN50~1400) Pressure Rating:Class 150~2500(PN20~420) Basic Material: ASTM A105, A350 LF2, A182 F304, A182 F316, A182 F6A,A182 F51, A182 F53,A564 630(17-4PH), Monel, Alloy

Low temperature ball valve-cryogenic ball valve
Low temperature ball valve-cryogenic ball valve

OUYI cryogenic ball valve is suitable for service of working temperature down to -196℃, such as LNG, LPG, and air separation industry. OUYI cryogenic trunnion ball valves are produced by the most advanced technology. It is designed with LIP SEAL which can keep valves with excellent sealing performance in ultra-low temperature. OUYI modern cryogenic test laboratory can test valves up to 28in.

Metal to Metal Ball Valve
Metal to Metal Ball Valve

Compared with soft seal ball valves, OUYI metal-to-metal ball valves have wider working temperature and medium range. During working condition, it has the features of reliable and safe sealing performance, long service life, easy operation and less pressure loss. It’s mainly used in service of high temperature, high pressure, severe corrosion and solid material containing services, such as coal chemical, polysilicon and vitriol/ nitric acid industry.

Cast Steel Trunnion ball valve-2pcs
Cast Steel Trunnion ball valve-2pcs

OUYI trunnion mounted ball valves are designed in accordance with API6D featuring 2 pc or 3 pc split body side entry or top entry design. Wide range of sealing material including PTFE, Peek, Devlon, Nylon etc, valve can be used in working temperature range -110℃~ 500℃. This series of valves are optional designed with Double block and bleed or double piston type. All valves are equipped with sealant injection system for both stem and seats to allow external intervention to prevent seat or stem leakage. The top entry ball valve can be used for in-line maintenance services. OUYI full range of trunnion mounted ball valves is fire safe test certified by INTECK Register per API607 and API6FA.

Forged Steel Floating Ball Valve
Forged Steel Floating Ball Valve

OUYI forged steel floating ball valves are designed in accordance with ISO17292 featuring 2 pc split body or 3 pc split body, ideal for medium or high pressure services and wide temperature range (-196℃~ 500℃) . It can substitute the small size trunnion mounted ball valves to save cost. It’s suitable for water steam, oil, liquefied petroleum gas, natural gas, coal gas, hydrogen, nitric acid, acetic acid, urea, and other media. It can be operated by manual ,Gear driver, pneumatic/electrical actuator OUYI full range of cast steel floating ball valves is fire safe test certified by INTECK Register per API607 and API6FA.

Cast steel Ball Valve
Cast steel Ball Valve

Ouyi cast steel floating ball valves are designed in accordance with ISO17292 featuring 2 pc split body side entry or uni-body. This series of valves are usually used in service of low pressure (150~300LB) and wide temperature range (-196℃~ 500℃). It’s suitable for water steam, oil, liquefied petroleum gas, natural gas, coal gas, hydrogen, nitric acid, acetic acid, urea, and other media. It can be operated by manual ,Gear driver, pneumatic/electrical actuator Ouyi full range of cast steel floating ball valves is fire safe test certified by Intertek Register per API607 and API6FA.

Welcome to Ouyi(Provide professional solutions for global users of industrial valves)
Ouyi is a professional manufacturer for designing & producing ball valves and ball valve spare parts, which was established in 1998. In the last 16 years, we concentrate on offering worldwide customers economical and safety industrial valve solution by continuously improvement on technical and quality

In Oct. 2009, with the order quantity increased sharply, to meet the local and oversea customers’ increasing requirement to our product. OUYI moved its factory to Linshui City and extend its building area more than 26000㎡ , the company staff increased to 180 persons, Under such back ground, to keep our product quality on always high level, We added more imported quality control equipment for QC lab. Now our quality control and inspection system is made by spectral analysis, physicochemical experiment, NDT, behavioral simulation experiment. With the professional quality management team operating according to ISO9001, we already executed the full process quality control covered whole producing process which are from raw material purchasing, producing process, completed products inspection, test & tracing to after service. Our target is to sure all OUYI product quality are always higher than customer’s request.
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
Plant Equipment
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