Fisher RSS Globe Control Valve – Sliding Stem Valves

Fisher RSS lined globe-style is part of the sliding stem valve range that is designed to with PTFE trim parts, push-down-to-close action, and positive shutoff.

The Fisher RSS valve is suitable for severely corrosive or toxic process fluids and is an economic alternative to alloy bodies.

RRS valve is fully lined, single-seated and includes bellows stem seal.

Fisher RSS Globe Control Valve

Product Features

Fluid Compatibility—The PFA (perfluoroalkoxy resin)-lined assembly provides corrosion protection by shielding metal parts from the process media, making it ideal for controlling severely corrosive media
Permeating Service—A heavy duty PTFE bellows with stainless steel support rings is standard for all services in the NPS 1 to 4 valve sizes. Compared to a standard bellows, the heavy duty bellows design has an enhanced resistance to permeation. This is due to a wall thickness of 2.5 mm (0.1 inch) and pressure retaining rings inside the bellows. This bellows features a modified PTFE material (TFM 1705) which provides additional permeation protection over the original heavy duty PTFE bellows
Economy—Because all metal parts are shielded from the process fluid, the use of expensive alloys is not necessary
Liner Integrity—Lining thickness is a minimum of 5 millimeters at all areas where the valve is exposed to process flow. Transfer molding techniques provide for excellent consistency, density, and low permeability. Transfer molded PFA material is translucent. This allows for checking of the entire wall surface for pin holes and cracks in the material during the manufacturing process
Easy In-Line Maintenance—The top entry design eases in-line maintenance. This design also minimizes the transfer of pipeline stress, which minimizes leakage both at the valve body joint and seat ring
Long Life Bellows Seal—The PTFE bellows seal is leak tight and, with proper use and maintenance, can have an expected life cycle exceeding 500,000 full stroke cycles

Fisher RSS Globe Control Valve – Sliding Stem Valves – Installation Detail

Fisher RSS Globe Control Valve

PRODUCT Specification

Valve Sizes		NPS J 1, J 1-1/2, J 2, J 3, and J 4
Shutoff Classification		Shutoff Classification Class VI per ANSI/FCI 70-2 and IEC 60534-4
Application Limits	Liquid Service:	For cavitating applications, contact T&D
	Gas Service	Velocity ± 0.33 MACH
Temperature Capabilities	Positive Pressure Service	-29 to 180_C (-20 to 360_F)
	Vacuum Service:	-29 to 180_C (-20 to 360_F)
Standard Flow Characteristic/Valve Plug Style		Equal percentage
Flow Direction		Up through the seat ring
Packing Arrangement		Braided PTFE rings

FISHER RSS GLOBE CONTROL VALVE Weights & Dimensions

ANSI/ISA CL150 FACE-TO-FACE DIMENSIONS MATING WITH CL150 FLANGES
Valve Size	Dimensions				Approximate Weight
Valve Size	A	B	D	EØ	Approximate Weight
NPS	mm				kg
1	184.0	83.0	185.0	108.0	10
1-1/2	222.0	97.0	225.0	127.0	17
2	254.0	107.0	230.0	152.4	20
3	298.0	121.0	340.0	190.5	39
4	350.0	176.0	350.0	220.0	42
ANSI/ISA CL300 FACE-TO-FACE DIMENSIONS MATING WITH CL300 FLANGES
Valve Size	Dimensions				Approximate Weight
NPS	A	B	D	EØ	kg
1	197.0	90.0	185.0	123.8	11
1-1/2	235.0	101.0	225.0	156.0	18
2	267.0	115.0	230.0	165.0	20

Fisher RSS Globe Control Valve – Sliding Stem Valves – Dimensions

See how Fisher Control Valves provide safe, efficient and intuitive flow control.

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➡ Did you know? Fisher Control Valves are approved, certified and classified to international standards including ASME, CSA, IEC, NACE, FDA & NFPA. Should you require assistance with valve specification for explosion-proof or intrinsically safe applications in the hazardous area industries, please contact T&D.