Can the Hydraulic 3-Way "L" Valve with BSP Internal Thread, RK3L Type, operate reliably with media other than hydraulic oil and extreme temperatures without special sealing recommendations?

Hydraulic 3-Way "L" Valve with BSP Internal Thread, RK3L Type can operate with media other than hydraulic oil and across extreme temperatures, but not unconditionally. Built from AISI 316Ti stainless steel with ball/seat sealing in POM or PTFE and stem seals in FKM, the valve is designed for broad chemical compatibility and temperature ranges (depending on seal choice, approx. –200°C to +250°C). This makes it suitable for many cryogenic, high‑temperature and non‑hydraulic media. However, reliable long‑term operation with aggressive or unusual fluids, or at temperature extremes, depends on selecting the correct seal material and assessing media aggressiveness, viscosity and contamination, as well as pressure and cycling conditions. For such applications Tubes International recommends consultation with their specialists to confirm seal compatibility and any special sealing or material requirements before deployment.

Is the Hydraulic 3-Way "L" Valve with BSP Internal Thread, RK3L Type, compatible with cryogenic applications and what sealing options are recommended for temperatures below -150°C?

Hydraulic 3-Way "L" Valve with BSP Internal Thread, RK3L Type is suitable for cryogenic applications. Constructed entirely from AISI 316Ti stainless steel and specified with sealing materials that support very low temperatures, it can operate reliably down to -200°C when the appropriate seals are selected. For temperatures below -150°C, PTFE (for the ball) is the recommended sealing material; stem seals should be chosen to maintain integrity at cryogenic conditions (consult FKM limitations—standard FKM is not suitable below ~-20°C). For best performance below -150°C, specify PTFE ball seals and request low-temperature-compatible stem packing (e.g., specially formulated PTFE or other cryogenic-rated materials) and confirm selection with Tubes International specialists to ensure compatibility with your specific media and service conditions.

Valve hydraulic three-way “L” with thread internal BSP, type RK3L

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Additional information

Material	SS – stainless steel

Three-way ball valve “L” type RK3L with thread internal BSP, intended for high-pressure installation hydraulic and industrial. in order to correct selection valve for media other than oil hydraulic and for high temperatures use, should consult with Tubes International. Material: steel stainless AISI 316Ti (body, ball, stem). seal: POM or PTFE (ball), FKM (stem). Operating temperature: od -40°C up to +100°C (POM); od -200°C up to +250°C (PTFE); od -20°C up to +200°C(FKM).

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HZ-RK3L-G-02	Valve three-way "L" DN4 with 1/8" BSP female, AISI 316Ti, POM/FKM	4	400	In stock	Enquiry
HZ-RK3L-G-02-T-V	Valve three-way "L" DN4 with 1/8" BSP female, AISI 316Ti, PTFE/FKM	4	100	In stock	Enquiry
HZ-RK3L-G-04	Valve three-way "L" DN6 with 1/4" BSP female, AISI 316Ti, POM/FKM	6	400	In stock	Enquiry
HZ-RK3L-G-04-T-V	Valve three-way "L" DN6 with 1/4" BSP female, AISI 316Ti, PTFE/FKM	6	100	In stock	Enquiry
HZ-RK3L-G-06	Valve three-way "L" DN10 with 3/8" BSP female, AISI 316Ti, POM/FKM	10	400	In stock	Enquiry
HZ-RK3L-G-06-T-V	Valve three-way "L" DN10 with 3/8" BSP female, AISI 316Ti, PTFE/FKM	10	100	In stock	Enquiry
HZ-RK3L-G-08	Valve three-way "L" DN13 with 1/2" BSP female, AISI 316Ti, POM/FKM	12	400	In stock	Enquiry
HZ-RK3L-G-08-T-V	Valve three-way "L" DN13 with 1/2" BSP female, AISI 316Ti, PTFE/FKM	12	100	In stock	Enquiry
HZ-RK3L-G-12	Valve three-way "L" DN20 with 3/4" BSP female, AISI 316Ti, POM/FKM	20	320	In stock	Enquiry
HZ-RK3L-G-12-T-V	Valve three-way "L" DN20 with 3/4" BSP female, AISI 316Ti, PTFE/FKM	20	100	In stock	Enquiry
HZ-RK3L-G-16	Valve three-way "L" DN25 with 1" BSP female, AISI 316Ti, POM/FKM	25	350	In stock	Enquiry
HZ-RK3L-G-16-T-V	Valve three-way "L" DN25 with 1" BSP female, AISI 316Ti, PTFE/FKM	25	100	In stock	Enquiry
HZ-RK3L-G-20	Valve three-way "L" DN32 with 1.1/4" BSP female, AISI 316Ti, POM/FKM	32	350	In stock	Enquiry
HZ-RK3L-G-20-T-V	Valve three-way "L" DN32 with 1.1/4" BSP female, AISI 316Ti, PTFE/FKM	32	63	In stock	Enquiry
HZ-RK3L-G-24	Valve three-way "L" DN40 with 1.1/2" BSP female, AISI 316Ti, POM/FKM	40	250	In stock	Enquiry
HZ-RK3L-G-24-T-V	Valve three-way "L" DN40 with 1.1/2" BSP female, AISI 316Ti, PTFE/FKM	40	63	In stock	Enquiry
HZ-RK3L-G-32	Valve three-way "L" DN50 with 2" BSP female, AISI 316Ti, POM/FKM	50	250	In stock	Enquiry
HZ-RK3L-G-32-T-V	Valve three-way "L" DN50 with 2" BSP female, AISI 316Ti, PTFE/FKM	50	63	In stock	Enquiry

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Three-way ball valve “L” type RK3L with thread internal BSP, intended for high-pressure installation hydraulic and industrial. in order to correct selection valve for media other than oil hydraulic and for high temperatures use, should consult with Tubes International. Material: steel stainless AISI 316Ti (body, ball, stem). seal: POM or PTFE (ball), FKM (stem). Operating temperature: od -40°C up to +100°C (POM); od -200°C up to +250°C (PTFE); od -20°C up to +200°C(FKM).