Ball Valves

LPA16 Wafer Type Thin Ball Valve

LPA16 Wafer Type Thin Ball Valve clamped directly between two pipe flanges—eliminating valve-body flanges entirely to achieve the shortest face-to-face dimension and lowest weight in its class, without compromising bubble-tight shutoff.

Product Description

The wafer-type thin ball valve replaces conventional flanged or threaded body designs with a monolithic slim-profile body sandwiched between pipeline flanges via through-bolts. This architecture cuts face-to-face length by up to 50 % and weight by up to 60 % compared to equivalent flanged ball valves, making it ideal for space-constrained skids, panels, and high-density piping racks.

The floating ball presses against a resilient seat ring under line pressure, delivering self-energizing, bidirectional zero-leakage sealing per API 598 Rate A. Seats in PTFE, RPTFE, or PEEK accommodate −29 °C to +200 °C. Body materials include WCB carbon steel, CF8/CF8M stainless steel, and duplex options. Sizes range DN 15 (½″) to DN 200 (8″), pressure classes PN 16–PN 63 / Class 150–300.

Key Features

Flangeless wafer envelope – Bolts pass through the valve body into both pipe flanges; no integral flanges, no extra gasket joints, minimal leak paths.
Ultra-short face-to-face – Freeing critical space in compact modules.
Featherweight construction – Up to 60 % lighter than flanged equivalents, reducing pipe support loads.
Pressure-energized soft seal – Line pressure forces ball into seat; sealing improves with differential pressure.
Bidirectional shutoff – Symmetric seat geometry provides equal sealing in both flow directions.
Blowout-proof stem & anti-static continuity – Standard safety features for hazardous-service compliance.
ISO 5211 top pad – Direct-coupled actuator mounting for pneumatic or electric automation.
Fire-safe option – Graphite secondary seat and metal-to-metal backup per API 607 / ISO 10497.

Typical Applications

High-density skid-mounted packages (oil & gas, chemical dosing)
Shipboard and offshore piping where weight and space are critical
HVAC and chilled-water manifolds in commercial buildings
Food & beverage CIP loops requiring frequent valve access
Instrumentation panels and pilot-plant rigs
Retrofit upgrades replacing bulky flanged valves without re-piping

Specifications

Valve Size:
NPS1/2 - NPS8;
DN15 - DN200
Pressure Class:
ASME Class 150, Class 300;
DIN PN10, PN16, PN25, PN40, PN63
Operating Temperature:
-46 to +260 °C / -50 to +500 °F
Process Connection Type:
Flanged, Threaded
Valve Bonnet:
Standard
Stem Seal:
Adjustable Packing
Seat Leakage:
Class VI (FCI-70.2) Standard Leakage Rates, soft seating Class VI-Bubble tight (Zero Leakage)
Flow Characteristics:
Quick Open
Critical Service:
Corrosive, General Service, Chemical, Pharmaceutical, Steam, Chlorine, Oxygen, Vacuum, Low Temperature
Valve Actuator:
Electric, Hydraulic, Pneumatic, Lever, Gear, Electro-Hydraulic
Valve Accessories:
Pneumatic Positioner, Electro Pneumatic Positioner, Limit Switch, SOV, Air lock relay, Volume Booster, AFR, Position Transmitter
Certifications:
PED, ATEX, SIL capable, Fugitive Emission
Media:
Specialty Gases, Liquids, Air, Inert Gas, Water
Other Configurations:
Contact your local Lapar business partner or sales office to learn about additional specifications or options for this product.