Unidirectional Knife Gate Valves Series 953 | Bluebell - Authorized Valve Dealer & Supplier

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Series 953

Unidirectional Knife Gate Valve

DESCRIPTION:

Bray’s Series 953 Knife Gate Valve features a semi-lug, single-piece cast body designed for demanding applications and is available in CF8, CF8M, CF3M, and SS2507 materials. It comes with standard metal-to-metal seating and optional self-locking PTFE or soft seats, engineered for high-performance unidirectional sealing. This valve is ideal for general-purpose on/off service and isolation of clean, dirty, corrosive, abrasive, viscous, and high-temperature media. Options include replaceable deflection cones and zero-leakage resilient seats.

SPECIFICATIONS:

• PMA: Max. - 2-10 150 psi | 50-250mm 10 bar, 12-16 90 psi | 300-400mm 6 bar, 18 75 psi | 450mm 5 bar, 20-24 60 psi | 500-600mm 4 bar

• MOC: Cast Iron and Ductile Iron

• SEAT: Buna-N, EPDM, Viton©, RPTFE

Available Sizes

Detailed Specifications

Size Range:2-10 150 psi | 50-250mm 10 bar, 12-16 90 psi | 300-400mm 6 bar, 18 75 psi | 450mm 5 bar, 20-24 60 psi | 500-600mm 4 bar

Seat Material Temperature Range:Buna-N: -34 to 194°F (-36 to 90°C)
EPDM: -65 to 248°F (-54 to 120°C)
Viton®: -15 to 392°F (-26 to 200°C)
RPTFE: -235 to 500°F (-148 to 260°C)

Packing Maximum Pressure:PTFE: 500°F (260°C)
Impregnated PTFE: 450°F (232°C)
PTFE/Buna-N: 194°F (90°C)
PTFE/Viton®: 392°F (200°C)
PTFE/EPDM: 248°F (120°C)

Body Style:Single Piece | Semi Lug

Body Materials:Cast Iron and Ductile Iron

Stem Materials:316 Stainless Steel, 304 Stainless Steel

Product GAD

Unidirectional Knife Gate Valves Series 953 Design

Dimensions

DN	A	B-PCD	R/FØC	D	E	F	G	ØH	ØI	ØJ	K	L	M	P
50	48	120.7	92	365	405	525	--	203	--	2	⅝"-11	9	2	18
80	51	152.4	127	405	470	585	--	203	--	2	⅝"-11	9	2	18
100	51	190.5	158	455	544	655	--	254	--	2	¾"-10	11	2	22
125	57	215.9	186	505	615	750	--	254	--	2	¾"-10	11	2	22
150	57	241.3	216	530	675	810	--	254	--	2	¾"-10	11	2	22
200	70	298.5	270	610	816	945	865	305	300	2	¾"-10	11	2	22
250	70	362.4	324	700	943	990	950	305	300	4	⅞"-9	11	2	25
300	76	431.8	381	805	1102	1250	1150	406	300	4	⅞"-9	11	2	25
350	76	476.3	438	885	1262	1375	1270	508	300	4	1"-8	11	2	28.4
400	89	539.8	470	983	1370	1556	1445	508	300	4	1"-8	11	2	28.4
450	89	577.9	533	1068	1510	1633	1600	508	300	6	1"-8	12	2	32.5
500	114	635.0	585	1183	1665	1876	1715	508	310	8	1"-8	12	2	32.5
600	114	749.3	692	1345	1925	2195	1975	508	310	8	1-¼"-7	12	2	32.5

Weight

Hand Wheel	Pneumatic Actuator	Gear Operator
9	12	--
11	14	--
13	17	--
16	26	--
19	28	--
29	38	39
45	63	54
53	73	60
82	111	94
110	141	122
162	173	150
215	249	199
247	310	256

Knife Gate Valves