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Technical data Installation Sizes and pipe connections Materials

½ ", ¾ ", 1", 1 ¼ ", 1 ½ ", 2" and 3"Screwed BSP or NPT PartMaterial BodyBronze EN 1982 CC491K ConeBrassBS 2874 CZ 114

Limiting conditions

CapBrassEN 12165 CW617N Spring (optional on 3" only)Stainless steelBS 2056 302 S26 Body design conditions PN16PMA - Maximum allowable pressure 16 bar gTMA - Maximum allowable temperature 250 ° CDesigned for a maximum cold hydraulic test pressure of 28 bar g

Dimensions/weights

(approximate in mm and kg) A D

Operating range

B
C ° Steam saturation curve C
Temperature Pressure bar g SizeABCDWeight ½" 53 4618 360.2 The product must not be used in the red area. ¾" 71 5820 410.5 1" 86 7128 560.8 1¼" 86 7128 560.8

Kv values

1½" 109 9136 711.9 Size½"¾"1"1¼"1½"2"3" 2" 13510443 862.7 Kv 1.94.38.511.918.830.868.4For conversion Cv (UK) = Kv x 0.97 Cv (US) = Kv x 1.17 3" 180152611226.9

Opening pressures

in mbar

Always install horizontally with the flow in thedirection as indicated on the body. Without springs Flow pressures Size½"¾"1"1¼"1½"2"3" 6.27.46.57.17.16.9-With springs fitted the opening pressure is the same as the springstrength.

How to order

Example: 1 off Spirax Sarco LCV1 lift check valvehaving 1" BSP connections.
LCHKS Spirax-Sarco Limited, Charlton House,Cheltenham, Gloucestershire, GL53 8ER UK.Tel: +44 (0)1242 521361 Fax: +44 (0)1242 573342E-mail: Enquiries@SpiraxSarco.comInternet: www.SpiraxSarco.com © Copyright 2002 Spirax Sarco is a registered trademark of Spirax-Sarco Limited 4

SB-P029-02

ST Issue 3