Check valve
H74 Clamp single flap swing check valve
H74 Clamp single flap swing check valve. Clamp single-flap swing check valve with short structural length and quick, spring-assisted closing.
Product catalog
Water meters, flow meters and parts
Mechanical, ultrasonic and wireless water meters, flow meters, meter parts and check valves for OEM and export orders.
Check valve
6 products
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Check valve
H46 Series Clamp Double Flap Swing Flange Check Valve
H46 Series Clamp Double Flap Swing Flange Check Valve. Clamp double-flap swing check valve with short face-to-face length and spring-assisted closing.
Check valve
H77 Clamp Butterfly check valve
H77 Clamp Butterfly check valve. The structure length is short, its structure length is only 1/4 to 1/8 of the traditional flange check valve.
Check valve
H76 Clamp Double Flap Swing Check Valve
H76 Clamp Double Flap Swing Check Valve. The structure length is short, its structure length is only 1/4 to 1/8 of the traditional flange check valve.
Check valve
H71 Clamp Lift Check Valve Clamp
H71 Clamp Lift Check Valve Clamp. The structure length is short, its structure length is only 1/4 to 1/8 of the traditional flange check valve.
Check valve
H42 Flange Foot Valve
H42 Flange Foot Valve. The valve is installed at the bottom of the suction pipe of the pump, and can automatically prevent the backflow of fluid.
Technical guides
How to select and maintain water meters
Articles on meter selection, installation, remote reading and troubleshooting.
Oct 19, 2026Woltman Cold Hot Water Meter
Woltman Water Meter Maintenance: Symptoms, Causes and Field Fixes
Why a Woltman meter reads low, stops registering or over-reads, what each symptom points to, and the maintenance that keeps it accurate.
Oct 19, 2026Woltman Cold Hot Water Meter
Woltman vs Ultrasonic Water Meter: How to Choose for Large Diameter Lines
A comparison for DN50 and larger lines: cost, low-flow accuracy, pressure loss, moving parts, power needs, and which meter suits which application.
Oct 19, 2026Woltman Cold Hot Water Meter
Woltman Water Meter Installation: Straight Pipe Runs, Orientation and Common Errors
Straight pipe lengths, mounting orientation, and the five install errors that make a Woltman turbine meter read inaccurately in the field.