L-Series Knife Gate Valves

Available in metal seat (Fig 76) and resilient seat (Fig 77).

HEAVY DUTY cast ductile iron body, packing gland and yoke.

O-Ring resilient seat available on Fig 76.

Sizes include 14", 16", 18", 20" and 24".

TFE lubricated synthetic packing rated for 400 F with a PH range of 3-11.

Designed and tested to MSS-SP-81 dimensions and specifications.

Heavy duty Lug body design to resist deflection from line loads and internal pressure. ANSI B16.5-150 drilled & tapped lugs.

Fabricated STAINLESS STEEL LINER.

STAINLESS STEEL GATE for corrosion resistance and durability.

STAINLESS STEEL STEM for corrosion resistance.

EASY CONVERSION from handwheel operator to cylinder, bevel gear or electric motor operator using standard cast yoke.

ENCLOSED BRASS STEM BUSHING provides reduced operating torque and protection of the stem bushing from harsh environments.

Fig 76 with METAL TO METAL SEAT and unidirectional beveled gate which provides shut off as required by MSS-SP-81. Capable of handling thick media such pulp stock or slurries, as well as solid media such as pellets or powders.

Fig 77's perimeter resilient seat provides DRIP TIGHT BI-DIRECTIONAL SHUT OFF

HEAVY DUTY cast ductile iron yoke will not bend or twist under extreme loads.

Valves are designed for 150 PSI CWP pressure rating.

SPECIFICATIONS

MATERIALS OF CONTRUCTION
MODEL		76	77
1	GATE	SS	SS
2	LINER	SS	SS
3	SEAT	SS	HYCAR**
4	BOLTS	PLATED	PLATED
5	PACKING	TLSP*	TLSP*
6	GLAND	DI	DI
7	STEM	SS	SS
8	YOKE	DI	DI
9	STEM NUT	BRASS	BRASS
10	HANDWHEEL	DI	DI
11	BODY	DI	DI

*TLSP = TFE Lubricated Synthetic Packing.
**EPDM, Neoprene, Viton and others available.

SS = Standard with 304 or 316 stainless steel
other alloys available.

Normally supplied with handwheel for manual operation, but can be modified for chainwheel, bevel gear, electric motor, hydraulic cylinder or pneumatic cylinder actuators.

DIMENSIONS AND WEIGHTS
VALVE SIZE	14"		16"		18"		20"		24"
	L76	L77	L76	L77	L76	L77	L76	L77	L76	L77
FACE TO FACE (F-F)	3"		3-1/2"		3-1/2"		4-1/2"		4-1/2"
FLANGE OD (OD)	21"		23-1/2"		25"		27-1/2"		32"
BOLT CIRCLE (BC)	18-3/4""		21-1/4"		22-3/4"		25"		29-1/2"
INSIDE DIAMETER (ID)	13-1/8"	14-1/4"	14-7/8"	15-7/8"	16-3/8"	17-3/4"	18"	19-3/4"	22"	23-3/4"
(NUMBER OF HOLES (N)	12		16		16		20		20
HOLE D&T SIZE (d)	1" NC		1" NC		1-1/8" NC		1-1/8" NC		1-1/4" NC
C/L TO TOP-CLOSED (H-CLS)	39-1/4"	41-1/4"	43-1/4"	45-3/8"	48"	60"	53-1/8"	56-1/8"	61-5/8"	63-1/2"
C/L TO TOP-OPEN (H-OPN)	52-5/8"	55-1/4"	58-3/4"	61-1/2"	65-1/2"	68"	72-1/8"	75-5/8"	84-3/4"	84-1/2"
HANDWHEEL DIA (H/W)	20"		20"		20"		20"		20"
WEIGHT-LBS	360		495		565		790		1015

Normally supplied with handwheel for manual operation but can be modified for lever, chain, bevel gear, electric, hydraulic or pneumatic operation.
See Valve Operators for details.