Figure 65 Knife Gate Valve

HEAVY DUTY cast ductile iron body and yoke for the most rugged service.

Solid lug body design.

Positive SHUT OFF in BOTH DIRECTIONS. URETHANE LINER and seat provides a BI-DIRECTIONAL BUBBLE TIGHT SEAL across gate from 0 to 150 PSI.

Smooth flow--non-clogging FULL PORT design. SEAT IS FLUSH with the bottom of the port ELIMINATING any pockets in the bottom of the valve to collect material in media such as slurries, pellets or powders.

URETHANE LINER is a one piece molded in place full body 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.

FULL PACKING SEAT around gate to minimize packing leakage.

MSS-SP81 face to face dimension and flange dimensions.

FULL PORT ID.

Time proven TOWNIPRENE urethane liner for the best abrasion resistance in tough applications.

SPECIFICATIONS

MATERIALS OF CONSTRUCTION
1	Gate	SS
2	Body	DI
3	Liner	Urethane
4	Bolts	Plated
5	Packing	TFE impregnated
6	Gland	DI
7	Stem	SS
8	Yoke	DI
9	Stem Nut	Brass
10	Handwheel	DI

DIMENSIONS (inches) and WEIGHTS
SIZE		2	3	4	6	8	10	12	14	16	18	20	24
FACE TO FACE	A	1 7/8	2	2	2 1/4	2 3/4	2 3/4	3	3	3 1/2	3 1/2	4 1/2	4 1/2
FLANGE DIAMETER	B	6	7 1/2	9	11	13 1/2	16	19	21	23 1/2	25	27 1/2	32
BOLT CIRCLE	BC	4 3/4	6	7 1/2	9 1/2	11 3/4	14 1/4	17	18 3/4	21 1/4	22 3/4	25	29 1/2
INSIDE DIAMETER	ID	2	3	4	6	8	10	12	13 1/4	15 1/4	17 1/4	19 1/4	23 1/4
NUMBER OF HOLES		4	4	8	8	8	12	12	12	16	16	20	20
HOLE SIZE, TAP NC		5/8	5/8	5/8	3/4	3/4	7/8	7/8	1	1	1 1/8	1 1/8	1 1/4
CENTER TO TOP--CLOSED	C	13 1/4	141/4	16 1/4	20 1/4	24 1/4	28 1/2	34 1/2	40	41	47	51 3/4	58 3/4
CENTER TO TOP--OPEN	D	15 1/2	17 1/2	20 1/2	26 1/2	32 1/2	38 3/4	47	54 1/4	56 1/4	64	72 1/4	82 1/4
HANDWHEEL DIAMETER	E	8	8	12	12	16	16	16	24	24	24	24	24
YOKE WIDTH	F	5	5	6	6 5/8	6 5/8	7 1/4	7 1/2	8 1/4	8 1/4	8 3/4	9 1/2	10 1/2
WEIGHT--LBS		20	29	46	75	118	180	295	345	420	545	805	1150

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.