Lined Pipe Insert Check Valve Style – LP

Description

The Lined Pipe Insert (LP) valve is designed to mate between two flanges on most lined pipe systems. It provides the simplest most economical way to install a check valve in a lined piping system. No gaskets are required; just spread the flanges, center the valve and bolt the flanges together. LP valves are available in fluoropolymer (PTFE/FEP/PFA) and Alloy C-276 to satisfy the most demanding applications. The standard spring material is Alloy C-276. Other materials are available upon request.

Size & Dimension

Nominal Pipe SizeSize CodeABCD**O.D.Orifice Dia.**
1H0.5901/40.260.260.530.348
1-1/2J1.1201/40.460.420.780.593
2K1.5701/40.790.441.011.135
3M2.5205/160.770.661.431.555***

NOTES (DIMENSIONS TABLE)*Maximum nominal dimension for a fully open valve with no spring.
**Orifice Diameter for PTFE valve may vary due to molding process.
***3" PTFE valves use 1.385 Orifice Diameter.Consult factory for more information.

Available Materials
  • Alloy C-276 (HC)
  • PTFE (TF)
Pressure Temperature Table

Body MaterialNominal Pipe SizeNon-Shock Pressure-Temperature Rating
Alloy C-276 (HC)1" - 3 "ANSI Class 150/300
PTFE (TF)1" - 2 "55 PSIG @ 100 °F
220 PSIG @ 100 °F

Seat material and spring material selection may limit the recommended service temperature.
See seat ratings, spring ratings, and body material ratings for their respective recommended service temperatures.
Consult the factory for reduced P-T rating above 100 °F. Standard spring material is 316 Stainless Steel.

Flow Data

PRESSURE DROP PSI

SizeCv
12.4
1-1/26.1
218.8
332.0

FOR WATER AT 72°F

WATER FLOWRATE - GPM

Note: All flow curves and Cv values presume the valves are fully open with 1/2 PSI cracking pressure springs. Consult the factory for more information.

Valve Weights

SIZEPART NUMBERMETALPTFE
1LPH4.0 oz.1.0 oz.
1-1/2LPJ8.8 oz.2.2 oz.
2LPK14.4 oz.3.2 oz.
3LPM2.3 lb.9.0 oz.

Valve weights are approximate.

Seat & Cracking Pressure Options

Valve StyleSize RangeBody Materials
Allowable Seat MaterialsStandard Cracking PressuresStandard Spring Material
LP1" - 3"PTFEAFLAS®
EPDM
"Metal to Metal" Buna-N
Kalrez®
Neoprene
Viton®
1/2 PSI316 SS
LP1" - 3"Alloy C-276AFLAS®
Buna-N
EPDM
Kalrez®
"Metal to Metal"
Neoprene
PTFE
Viton®
1/2 PSI316 SS

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