Product · PVPeW 2026
Home › All product categories › Valves › Butterfly Check Valve Butterfly Check Valve
Description
A wafer-type non-return valve that opens and closes automatically under the pressure of the medium to prevent reverse flow. The slim body takes little space and is easy to install, with low flow resistance and sensitive action. Its dual-disc butterfly construction gives good sealing and pressure resistance, and the large sizes are economical. It is used in water supply, wastewater, power and HVAC, chemical and fire-protection lines for clean water, wastewater and circulating water.
Technical Parameters
Connection Type Wafer
Design Dual-disc butterfly
Function Non-return
PVPeW 2026 · The 21st Wenzhou International Pump, Valve and Pipe Exhibition · Archive of past editions · Wenzhou, China · All product categories
Wenzhou International Pump, Valve & Pipeline Exhibition — PVPeW 2027
PVPeW 2027 comprises two parallel trade exhibitions in Wenzhou, Zhejiang, China:
1. Wenzhou Longwan Expo
Official name: The 9th China Valve City · Longwan International Valve Exhibition
Dates: March 12-14, 2027 (three days)
Venue: Wenzhou Olympic Sports Convention and Exhibition Center, Wenzhou, Zhejiang, China
2. Wenzhou Yongjia Expo
Official name: The 22nd Wenzhou International Pump, Valve & Pipeline Exhibition
Dates: May 21-23, 2027 (three days)
Venue: Wenzhou Yongjia Pump & Valve Expo Center, Oubei Street, Yongjia County, Wenzhou, Zhejiang, China
Scale of the previous Wenzhou Yongjia Expo edition (2026 actuals)
30,000 sqm exhibition area · 600+ exhibitors · 30,000+ trade visitors · 30+ countries and regions
Product categories on display
Valves & Accessories: ball, gate, butterfly, globe, check, control, safety, solenoid and needle valvesPumps: centrifugal, magnetic drive, screw, diaphragm, sewage, fire, vacuum and metering pumpsActuators: electric and pneumatic actuators, valve positioners, control systemsPipes & Fittings: seamless and welded pipe, flanges, elbows, tees, compensatorsSeals & Materials: mechanical seals, packing, gaskets, O-rings, fastenersSmart Equipment: smart instruments, IoT monitoring, digital pump stations
Services for international visitors
Free online visitor registration and e-badge
Visa invitation letter on request
Business matching with exhibitors before and during the show
Free interpretation support during matchmaking sessions
Transport, hotel and travel guidance (see /#/travel)
Frequently asked questions
When and where is PVPeW 2027 held?
PVPeW 2027 comprises two parallel exhibitions. The Yongjia edition runs May 21-23, 2027 at the Wenzhou Yongjia Pump & Valve Expo Center, Oubei, Yongjia County, Wenzhou; the Longwan edition runs March 12-14, 2027 at the Wenzhou International Convention & Exhibition Center, Wenzhou.
Is visitor registration free?
Yes — registration is free for trade buyers. Register online in advance to receive an e-badge and fast-track on-site collection.
Do I need a visa, and can I get an invitation letter?
Most international visitors need a visa to enter China. After registering you can request an official visa invitation letter; submit your passport information page at least six weeks before the show.
Can I book meetings with exhibitors before the show?
Yes — submit your sourcing requirements through the business matching service and the committee will arrange one-to-one meetings. Free interpretation is provided.
How do I book a booth, or become an exhibitor?
Submit an exhibitor application through the Exhibitors section, or contact the committee directly. A sales manager replies within one business day.
Is there an entry fee or age restriction?
There is no entry fee — PVPeW is a B2B trade exhibition and admission is restricted to visitors aged 18 and over.
See all frequently asked questions
Contact
Hotline: WhatsApp：+86 18006682337 WhatsApp：+86 18958741615 | Email: Lily@valve-expo.com; Daisy@valve-expo.com
Organizing Committee office: Oubei, Yongjia County, Wenzhou, Zhejiang, China
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