Xieyu S.H Premium PPH Manual Wafer Butterfly Valves (S5 / 1.25MPa)

Control and throttle high-volume corrosive fluid flows with our premium Xieyu S.H PPH manual wafer butterfly valves, available at Atradesen.com. Manufactured by Xieyu (S.H / HIEH), a world-class industrial thermoplastics developer, these flanged, wafer-style butterfly valves are engineered for highly demanding industrial chemical systems, withstanding operating pressures up to 1.25 MPa (181 PSI) and temperature loads from -20°C to 100°C.

Featuring a high-contrast red lever handle and a heavy-duty wafer multi-lug body, this valve series is highly compatible with industrial chemical pipelines, acid pickling loops, electroplating lines, waste gas scrubbers, waste acid recovery, and wastewater treatment.

Premium Multi-Material Hybrid Engineering

To deliver optimal mechanical rigidity and fluid safety under high clamping force, this butterfly valve incorporates a specialized hybrid material layout, as officially specified on our body plate:

• Body (PP-GR): Molded from glass-fiber reinforced Polypropylene. This advanced material prevents structural deformation, micro-cracking, or warping under continuous bolting torque and extreme thermal expansion cycles.
• Disc (PPH): Homopolymer Polypropylene disc provides high chemical inertness, shielding the internal fluid passage from heavy pickling acids, aggressive alkalis, and mineral scaling.
• Stem/Shaft (304 Stainless Steel): High-strength metallic core shaft ensures stable mechanical torque transmission and smooth lever operation under heavy fluid pressure.
• Seat Seal (EPDM): Highly elastic, weather-resistant elastomer liner that secures zero-leakage, drip-tight sealing across a wide temperature range.

Symmetrical Multi-Position Lever Handle & Wafer Lug Flange

The heavy-duty red lever handle features an integrated manual spring-loaded trigger lock. By pressing the bottom lever, you can adjust the PPH disc angle precisely in incremental gear stages to regulate fluid velocity, making it an excellent water flow throttle valve. The multi-lug wafer body slips compactly between standard pipe flanges, self-aligning to various international piping bolt configurations (including DIN, ANSI, and JIS standards).

⚠️ Sizing & Flange Compatibility Guide

The nominal sizing corresponds to the matching pipe outer diameter (OD), standard DN rating, and imperial thread equivalents:

• DN50 - 63mm (2"): Fits standard 2-inch piping lines.
• DN65 - 75mm (2.5"): Fits standard 2.5-inch piping lines.
• DN80 - 90mm (3"): Fits standard 3-inch piping lines.
• DN100 - 110mm (4"): Fits standard 4-inch piping lines.
• DN125 - 140mm (5"): Fits standard 5-inch piping lines.
• DN150 - 160mm (6"): Fits standard 6-inch piping lines.
• DN200 - 225mm (8"): Fits standard 8-inch heavy-duty mainlines.
• Note: Standard flanged wafer-type installation. Flange gaskets and bolt fasteners must be prepared separately for connection.

Technical Specifications

Frequently Asked Questions (FAQ)

Q: Why is the valve body made of PP-GR while the internal disc is PPH?

A: The valve body is clamped tightly between pipe flanges using heavy steel bolts. Under high tightening torque, standard plastics can experience cold flow or creep, causing the body to warp and leak. Adding glass fiber (PP-GR) to the body increases mechanical stiffness and structural dimensional stability. The internal disc, however, is PPH to ensure direct, uncompromised chemical resistance against acids and bases without fiber glass exposure.

Q: How do I use the lever handle as a water flow throttle regulator?

A: Grip the red lever and squeeze the black trigger lock located underneath it. This releases the internal gear pin. Rotate the handle to your target angle (the disc will rotate inside). Releasing the trigger lock allows the pin to snap into the nearest multi-position gear slot, securely locking the disc in place to maintain your regulated flow velocity.