Optional Special Functions & Custom Connection Accessories
Optional Special Functions & Custom Connection Accessories
Custom optional accessories & special functions for all pressure gauge series. Includes limit pointers, max memory pointer, field zero adjuster, pressure damping screw, Autoclave thread and VCR ultra-clean connection. Combine suffix codes to meet your industrial site requirements.
Core Advantages
Universal add-on options for all pressure gauge series, including limit comparison pointers, maximum pressure
memory pointer, external adjustable pointers, field zero adjuster, pressure damping screw, high-pressure Autoclave thread, semiconductor VCR ultra-clean connection. All suffix codes can be freely combined on base model for customized site requirements.
Optional Accessories & Suffix Codes
1. Internal Comparison Pointer (Suffix D, e.g. YTH-100D)
Applicable sizes: Φ60 / Φ100 / Φ150 full-stainless-steel airtight gauges (YTHN, YP, YTQ, YTQG series,
etc.)
Function: Black main pressure pointer; red upper-limit pointer and blue lower-limit pointer for preset
warning thresholds.
Adjustable by external knob; self-locking structure after setting, no additional locking required.
Material: Manganese-steel pointer, chrome-plated brass adjuster base.
2. Max Pressure Memory Pointer (Suffix J, e.g. YTH-100J)
Applicable sizes: Φ100 / Φ150 sealed liquid-filled gauges
Function: Red memory pointer tracks peak pressure and holds the maximum reading as pressure drops;
reset via external knob.
Self-locking adjusting structure; manganese-steel pointer, chrome-plated brass body.
3. External Comparison Pointer (Suffix DY, e.g. YTHN-100DY)
Applicable: Φ100/150/200/250 bottom-mount / back-mount inner bayonet gauges
(YTH/YTF/YB/YP/CYM/CYE)
Not compatible: Axial front-flange, electric-contact, differential-pressure and transmitter-type gauge
series.
Material: 304 SS red upper-limit and blue lower-limit pointers, freely adjustable to any position.
Optional
Accessories & Suffix Codes
4. Field Zero Adjuster (Suffix TL, e.g. YTF-100TL)
Applicable sizes: Φ100 / Φ150
Function: On-site calibration to eliminate gauge reading drift.
5. Pressure Damping Screw (Suffix ZN, e.g. YTHN-150ZN)
Applicable sizes: Φ60/100/150/200/250
Function: Absorb medium pressure pulsation to protect internal measuring element; pre-installed on
selected liquid-filled gauges.
6. Autoclave High-Pressure Connection (Suffix K, e.g. YTHN-100K)
Applicable sizes: Φ100 / Φ150
Thread specs: 9/16-18 UNF, 3/4-16 UNF
Material: 304 / 316L SS
Span: 2320psi ~ 36259psi
Application: High-pressure crude-oil and gas drilling pipelines.
7. VCR Ultra-Clean Connection (Suffix V4/V8, e.g. YTHN-60V4)
Model variants: VCR-4 (Φ60/100/150), VCR-8 (Φ100/150)
Thread specs: 9/16-18 UNF for 1/4", 7/8-14 UNF for 1/2" (Swagelok standard)
Material: 316L SS, mirror-polished surface, Ra0.25
Span: 15psi ~ 3626psi
Application: Ultra-pure-media pipelines for semiconductor and silicon-wafer manufacturing.
Selection Support
Please provide base gauge model, required function suffix codes, connection thread standard and operating
pressure range. Our engineering team will confirm the complete combined model code and provide connection
dimension drawings.